{"file_path":"contracts/BeamToken.sol","creation_status":"success","source_code":"// SPDX-License-Identifier: MIT\npragma solidity 0.8.6;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/ERC20Votes.sol\";\nimport \"@openzeppelin/contracts/access/AccessControlEnumerable.sol\";\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\nimport \"./interfaces/IBeamToken.sol\";\n\ncontract BeamToken is Context, AccessControlEnumerable, ERC20Votes, IBeamToken {\n    bytes32 public constant MINTER_ROLE = keccak256(\"MINTER_ROLE\");\n    bytes32 public constant BURNER_ROLE = keccak256(\"BURNER_ROLE\");\n\n    modifier onlyHasRole(bytes32 _role) {\n        require(hasRole(_role, _msgSender()), \"BeamToken.onlyHasRole: msg.sender does not have role\");\n        _;\n    }\n\n    constructor(string memory _name, string memory _symbol) ERC20Permit(_name) ERC20(_name, _symbol) {\n        require(bytes(_name).length > 0, \"Empty name\");\n        require(bytes(_symbol).length > 0, \"Empty symbol\");\n        _setupRole(DEFAULT_ADMIN_ROLE, _msgSender());  \n    }\n\n    function mint(address _to, uint256 _amount) onlyHasRole(MINTER_ROLE) override external {\n        require(_to != address(this), \"BeamToken.mint: unable to mint tokens to itself\");\n        _mint(_to, _amount);\n    }\n\n    function burn(address _from, uint256 _amount) onlyHasRole(BURNER_ROLE) override external {\n        _burn(_from, _amount);\n    }\n\n    function _transfer(address _from, address _to, uint256 _amount) internal override {\n        require(_to != address(this), \"BeamToken._transfer: transfer to self not allowed\");\n        super._transfer(_from, _to, _amount);\n    }\n    \n}","deployed_bytecode":"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","optimization_enabled":true,"verified_twin_address_hash":null,"is_verified":true,"compiler_settings":{"evmVersion":"berlin","libraries":{},"metadata":{"bytecodeHash":"none"},"optimizer":{"enabled":true,"runs":800},"remappings":[]},"optimization_runs":800,"sourcify_repo_url":"https://repo.sourcify.dev/contracts/partial_match/1/0x62D0A8458eD7719FDAF978fe5929C6D342B0bFcE/","decoded_constructor_args":[["Beam",{"internalType":"string","name":"_name","type":"string"}],["BEAM",{"internalType":"string","name":"_symbol","type":"string"}]],"compiler_version":"0.8.6+commit.11564f7e","is_verified_via_verifier_alliance":false,"verified_at":"2023-11-26T14:22:52.478979Z","implementations":[],"proxy_type":null,"external_libraries":[],"creation_bytecode":"0x6101406040527f6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9610120523480156200003757600080fd5b5060405162003007380380620030078339810160408190526200005a916200048d565b8180604051806040016040528060018152602001603160f81b815250848481600590805190602001906200009092919062000330565b508051620000a690600690602084019062000330565b5050825160209384012082519284019290922060c083815260e08290524660a0818152604080517f8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f818a018190528183019890985260608101959095526080808601939093523085830152805180860390920182529390920190925280519401939093209092526101005250508151620001745760405162461bcd60e51b815260206004820152600a602482015269456d707479206e616d6560b01b60448201526064015b60405180910390fd5b6000815111620001b65760405162461bcd60e51b815260206004820152600c60248201526b115b5c1d1e481cde5b589bdb60a21b60448201526064016200016b565b620001c3600033620001cb565b50506200054a565b620001e282826200020e60201b62000fa01760201c565b60008281526001602090815260409091206200020991839062000fae6200021e821b17901c565b505050565b6200021a82826200023e565b5050565b600062000235836001600160a01b038416620002de565b90505b92915050565b6000828152602081815260408083206001600160a01b038516845290915290205460ff166200021a576000828152602081815260408083206001600160a01b03851684529091529020805460ff191660011790556200029a3390565b6001600160a01b0316816001600160a01b0316837f2f8788117e7eff1d82e926ec794901d17c78024a50270940304540a733656f0d60405160405180910390a45050565b6000818152600183016020526040812054620003275750815460018181018455600084815260208082209093018490558454848252828601909352604090209190915562000238565b50600062000238565b8280546200033e90620004f7565b90600052602060002090601f016020900481019282620003625760008555620003ad565b82601f106200037d57805160ff1916838001178555620003ad565b82800160010185558215620003ad579182015b82811115620003ad57825182559160200191906001019062000390565b50620003bb929150620003bf565b5090565b5b80821115620003bb5760008155600101620003c0565b600082601f830112620003e857600080fd5b81516001600160401b038082111562000405576200040562000534565b604051601f8301601f19908116603f0116810190828211818310171562000430576200043062000534565b816040528381526020925086838588010111156200044d57600080fd5b600091505b8382101562000471578582018301518183018401529082019062000452565b83821115620004835760008385830101525b9695505050505050565b60008060408385031215620004a157600080fd5b82516001600160401b0380821115620004b957600080fd5b620004c786838701620003d6565b93506020850151915080821115620004de57600080fd5b50620004ed85828601620003d6565b9150509250929050565b600181811c908216806200050c57607f821691505b602082108114156200052e57634e487b7160e01b600052602260045260246000fd5b50919050565b634e487b7160e01b600052604160045260246000fd5b60805160a05160c05160e0516101005161012051612a6d6200059a6000396000610e0201526000611222015260006112710152600061124c015260006111d0015260006111f90152612a6d6000f3fe608060405234801561001057600080fd5b50600436106102415760003560e01c806370a0823111610145578063a457c2d7116100bd578063d505accf1161008c578063d547741f11610071578063d547741f14610551578063dd62ed3e14610564578063f1127ed81461059d57600080fd5b8063d505accf14610517578063d53913931461052a57600080fd5b8063a457c2d7146104cb578063a9059cbb146104de578063c3cda520146104f1578063ca15c8731461050457600080fd5b806391d14854116101145780639ab24eb0116100f95780639ab24eb01461049d5780639dc29fac146104b0578063a217fddf146104c357600080fd5b806391d148541461045e57806395d89b411461049557600080fd5b806370a08231146103fc5780637ecebe00146104255780638e539e8c146104385780639010d07c1461044b57600080fd5b8063313ce567116101d85780633a46b1a8116101a7578063587cde1e1161018c578063587cde1e1461037d5780635c19a95c146103c15780636fcfff45146103d457600080fd5b80633a46b1a81461035757806340c10f191461036a57600080fd5b8063313ce5671461031a5780633644e5151461032957806336568abe14610331578063395093511461034457600080fd5b806323b872dd1161021457806323b872dd146102a8578063248a9ca3146102bb578063282c51f3146102de5780632f2ff15d1461030557600080fd5b806301ffc9a71461024657806306fdde031461026e578063095ea7b31461028357806318160ddd14610296575b600080fd5b61025961025436600461282c565b6105da565b60405190151581526020015b60405180910390f35b610276610605565b60405161026591906128d7565b61025961029136600461270c565b610697565b6004545b604051908152602001610265565b6102596102b6366004612666565b6106ad565b61029a6102c93660046127ce565b60009081526020819052604090206001015490565b61029a7f3c11d16cbaffd01df69ce1c404f6340ee057498f5f00246190ea54220576a84881565b6103186103133660046127e7565b610771565b005b60405160128152602001610265565b61029a610798565b61031861033f3660046127e7565b6107a7565b61025961035236600461270c565b6107c9565b61029a61036536600461270c565b610805565b61031861037836600461270c565b61087f565b6103a961038b366004612618565b6001600160a01b039081166000908152600860205260409020541690565b6040516001600160a01b039091168152602001610265565b6103186103cf366004612618565b6109a5565b6103e76103e2366004612618565b6109b2565b60405163ffffffff9091168152602001610265565b61029a61040a366004612618565b6001600160a01b031660009081526002602052604090205490565b61029a610433366004612618565b6109d4565b61029a6104463660046127ce565b6109f2565b6103a961045936600461280a565b610a4e565b61025961046c3660046127e7565b6000918252602082815260408084206001600160a01b0393909316845291905290205460ff1690565b610276610a66565b61029a6104ab366004612618565b610a75565b6103186104be36600461270c565b610afc565b61029a600081565b6102596104d936600461270c565b610ba3565b6102596104ec36600461270c565b610c54565b6103186104ff366004612736565b610c61565b61029a6105123660046127ce565b610d97565b6103186105253660046126a2565b610dae565b61029a7f9f2df0fed2c77648de5860a4cc508cd0818c85b8b8a1ab4ceeef8d981c8956a681565b61031861055f3660046127e7565b610f12565b61029a610572366004612633565b6001600160a01b03918216600090815260036020908152604080832093909416825291909152205490565b6105b06105ab36600461278e565b610f1c565b60408051825163ffffffff1681526020928301516001600160e01b03169281019290925201610265565b60006001600160e01b03198216635a05180f60e01b14806105ff57506105ff82610fc3565b92915050565b606060058054610614906129bd565b80601f0160208091040260200160405190810160405280929190818152602001828054610640906129bd565b801561068d5780601f106106625761010080835404028352916020019161068d565b820191906000526020600020905b81548152906001019060200180831161067057829003601f168201915b5050505050905090565b60006106a4338484610ff8565b50600192915050565b60006106ba84848461111c565b6001600160a01b0384166000908152600360209081526040808320338452909152902054828110156107595760405162461bcd60e51b815260206004820152602860248201527f45524332303a207472616e7366657220616d6f756e742065786365656473206160448201527f6c6c6f77616e636500000000000000000000000000000000000000000000000060648201526084015b60405180910390fd5b6107668533858403610ff8565b506001949350505050565b61077b82826111a6565b60008281526001602052604090206107939082610fae565b505050565b60006107a26111cc565b905090565b6107b182826112bf565b60008281526001602052604090206107939082611347565b3360008181526003602090815260408083206001600160a01b038716845290915281205490916106a491859061080090869061290a565b610ff8565b60004382106108565760405162461bcd60e51b815260206004820152601f60248201527f4552433230566f7465733a20626c6f636b206e6f7420796574206d696e6564006044820152606401610750565b6001600160a01b0383166000908152600960205260409020610878908361135c565b9392505050565b7f9f2df0fed2c77648de5860a4cc508cd0818c85b8b8a1ab4ceeef8d981c8956a66108aa813361046c565b61091c5760405162461bcd60e51b815260206004820152603460248201527f4265616d546f6b656e2e6f6e6c79486173526f6c653a206d73672e73656e646560448201527f7220646f6573206e6f74206861766520726f6c650000000000000000000000006064820152608401610750565b6001600160a01b03831630141561099b5760405162461bcd60e51b815260206004820152602f60248201527f4265616d546f6b656e2e6d696e743a20756e61626c6520746f206d696e74207460448201527f6f6b656e7320746f20697473656c6600000000000000000000000000000000006064820152608401610750565b6107938383611419565b6109af33826114b6565b50565b6001600160a01b0381166000908152600960205260408120546105ff90611548565b6001600160a01b0381166000908152600760205260408120546105ff565b6000438210610a435760405162461bcd60e51b815260206004820152601f60248201527f4552433230566f7465733a20626c6f636b206e6f7420796574206d696e6564006044820152606401610750565b6105ff600a8361135c565b600082815260016020526040812061087890836115c8565b606060068054610614906129bd565b6001600160a01b0381166000908152600960205260408120548015610ae9576001600160a01b0383166000908152600960205260409020610ab7600183612963565b81548110610ac757610ac7612a34565b60009182526020909120015464010000000090046001600160e01b0316610aec565b60005b6001600160e01b03169392505050565b7f3c11d16cbaffd01df69ce1c404f6340ee057498f5f00246190ea54220576a848610b27813361046c565b610b995760405162461bcd60e51b815260206004820152603460248201527f4265616d546f6b656e2e6f6e6c79486173526f6c653a206d73672e73656e646560448201527f7220646f6573206e6f74206861766520726f6c650000000000000000000000006064820152608401610750565b61079383836115d4565b3360009081526003602090815260408083206001600160a01b038616845290915281205482811015610c3d5760405162461bcd60e51b815260206004820152602560248201527f45524332303a2064656372656173656420616c6c6f77616e63652062656c6f7760448201527f207a65726f0000000000000000000000000000000000000000000000000000006064820152608401610750565b610c4a3385858403610ff8565b5060019392505050565b60006106a433848461111c565b83421115610cb15760405162461bcd60e51b815260206004820152601d60248201527f4552433230566f7465733a207369676e617475726520657870697265640000006044820152606401610750565b604080517fe48329057bfd03d55e49b547132e39cffd9c1820ad7b9d4c5307691425d15adf60208201526001600160a01b038816918101919091526060810186905260808101859052600090610d2b90610d239060a001604051602081830303815290604052805190602001206115ec565b85858561163a565b9050610d3681611662565b8614610d845760405162461bcd60e51b815260206004820152601960248201527f4552433230566f7465733a20696e76616c6964206e6f6e6365000000000000006044820152606401610750565b610d8e81886114b6565b50505050505050565b60008181526001602052604081206105ff9061168a565b83421115610dfe5760405162461bcd60e51b815260206004820152601d60248201527f45524332305065726d69743a206578706972656420646561646c696e650000006044820152606401610750565b60007f0000000000000000000000000000000000000000000000000000000000000000888888610e2d8c611662565b6040805160208101969096526001600160a01b0394851690860152929091166060840152608083015260a082015260c0810186905260e0016040516020818303038152906040528051906020012090506000610e88826115ec565b90506000610e988287878761163a565b9050896001600160a01b0316816001600160a01b031614610efb5760405162461bcd60e51b815260206004820152601e60248201527f45524332305065726d69743a20696e76616c6964207369676e617475726500006044820152606401610750565b610f068a8a8a610ff8565b50505050505050505050565b6107b18282611694565b60408051808201909152600080825260208201526001600160a01b0383166000908152600960205260409020805463ffffffff8416908110610f6057610f60612a34565b60009182526020918290206040805180820190915291015463ffffffff8116825264010000000090046001600160e01b0316918101919091529392505050565b610faa82826116ba565b5050565b6000610878836001600160a01b038416611758565b60006001600160e01b03198216637965db0b60e01b14806105ff57506301ffc9a760e01b6001600160e01b03198316146105ff565b6001600160a01b03831661105a5760405162461bcd60e51b8152602060048201526024808201527f45524332303a20617070726f76652066726f6d20746865207a65726f206164646044820152637265737360e01b6064820152608401610750565b6001600160a01b0382166110bb5760405162461bcd60e51b815260206004820152602260248201527f45524332303a20617070726f766520746f20746865207a65726f206164647265604482015261737360f01b6064820152608401610750565b6001600160a01b0383811660008181526003602090815260408083209487168084529482529182902085905590518481527f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925910160405180910390a3505050565b6001600160a01b03821630141561119b5760405162461bcd60e51b815260206004820152603160248201527f4265616d546f6b656e2e5f7472616e736665723a207472616e7366657220746f60448201527f2073656c66206e6f7420616c6c6f7765640000000000000000000000000000006064820152608401610750565b6107938383836117a7565b6000828152602081905260409020600101546111c281336119aa565b61079383836116ba565b60007f000000000000000000000000000000000000000000000000000000000000000046141561121b57507f000000000000000000000000000000000000000000000000000000000000000090565b50604080517f00000000000000000000000000000000000000000000000000000000000000006020808301919091527f0000000000000000000000000000000000000000000000000000000000000000828401527f000000000000000000000000000000000000000000000000000000000000000060608301524660808301523060a0808401919091528351808403909101815260c0909201909252805191012090565b6001600160a01b038116331461133d5760405162461bcd60e51b815260206004820152602f60248201527f416363657373436f6e74726f6c3a2063616e206f6e6c792072656e6f756e636560448201527f20726f6c657320666f722073656c6600000000000000000000000000000000006064820152608401610750565b610faa8282611a28565b6000610878836001600160a01b038416611aa7565b8154600090815b818110156113c05760006113778284611b9a565b90508486828154811061138c5761138c612a34565b60009182526020909120015463ffffffff1611156113ac578092506113ba565b6113b781600161290a565b91505b50611363565b811561140457846113d2600184612963565b815481106113e2576113e2612a34565b60009182526020909120015464010000000090046001600160e01b0316611407565b60005b6001600160e01b031695945050505050565b6114238282611bb5565b6004546001600160e01b0310156114a25760405162461bcd60e51b815260206004820152603060248201527f4552433230566f7465733a20746f74616c20737570706c79207269736b73206f60448201527f766572666c6f77696e6720766f746573000000000000000000000000000000006064820152608401610750565b6114b0600a611c9c83611ca8565b50505050565b6001600160a01b03828116600081815260086020818152604080842080546002845282862054949093528787167fffffffffffffffffffffffff00000000000000000000000000000000000000008416811790915590519190951694919391928592917f3134e8a2e6d97e929a7e54011ea5485d7d196dd5f0ba4d4ef95803e8e3fc257f9190a46114b0828483611e21565b600063ffffffff8211156115c45760405162461bcd60e51b815260206004820152602660248201527f53616665436173743a2076616c756520646f65736e27742066697420696e203360448201527f32206269747300000000000000000000000000000000000000000000000000006064820152608401610750565b5090565b60006108788383611f5e565b6115de8282611f88565b6114b0600a6120dd83611ca8565b60006105ff6115f96111cc565b8360405161190160f01b6020820152602281018390526042810182905260009060620160405160208183030381529060405280519060200120905092915050565b600080600061164b878787876120e9565b91509150611658816121d6565b5095945050505050565b6001600160a01b03811660009081526007602052604090208054600181018255905b50919050565b60006105ff825490565b6000828152602081905260409020600101546116b081336119aa565b6107938383611a28565b6000828152602081815260408083206001600160a01b038516845290915290205460ff16610faa576000828152602081815260408083206001600160a01b03851684529091529020805460ff191660011790556117143390565b6001600160a01b0316816001600160a01b0316837f2f8788117e7eff1d82e926ec794901d17c78024a50270940304540a733656f0d60405160405180910390a45050565b600081815260018301602052604081205461179f575081546001818101845560008481526020808220909301849055845484825282860190935260409020919091556105ff565b5060006105ff565b6001600160a01b0383166118235760405162461bcd60e51b815260206004820152602560248201527f45524332303a207472616e736665722066726f6d20746865207a65726f20616460448201527f64726573730000000000000000000000000000000000000000000000000000006064820152608401610750565b6001600160a01b0382166118855760405162461bcd60e51b815260206004820152602360248201527f45524332303a207472616e7366657220746f20746865207a65726f206164647260448201526265737360e81b6064820152608401610750565b6001600160a01b038316600090815260026020526040902054818110156119145760405162461bcd60e51b815260206004820152602660248201527f45524332303a207472616e7366657220616d6f756e742065786365656473206260448201527f616c616e636500000000000000000000000000000000000000000000000000006064820152608401610750565b6001600160a01b0380851660009081526002602052604080822085850390559185168152908120805484929061194b90849061290a565b92505081905550826001600160a01b0316846001600160a01b03167fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef8460405161199791815260200190565b60405180910390a36114b0848484612391565b6000828152602081815260408083206001600160a01b038516845290915290205460ff16610faa576119e6816001600160a01b031660146123c3565b6119f18360206123c3565b604051602001611a02929190612856565b60408051601f198184030181529082905262461bcd60e51b8252610750916004016128d7565b6000828152602081815260408083206001600160a01b038516845290915290205460ff1615610faa576000828152602081815260408083206001600160a01b0385168085529252808320805460ff1916905551339285917ff6391f5c32d9c69d2a47ea670b442974b53935d1edc7fd64eb21e047a839171b9190a45050565b60008181526001830160205260408120548015611b90576000611acb600183612963565b8554909150600090611adf90600190612963565b9050818114611b44576000866000018281548110611aff57611aff612a34565b9060005260206000200154905080876000018481548110611b2257611b22612a34565b6000918252602080832090910192909255918252600188019052604090208390555b8554869080611b5557611b55612a1e565b6001900381819060005260206000200160009055905585600101600086815260200190815260200160002060009055600193505050506105ff565b60009150506105ff565b6000611ba96002848418612922565b6108789084841661290a565b6001600160a01b038216611c0b5760405162461bcd60e51b815260206004820152601f60248201527f45524332303a206d696e7420746f20746865207a65726f2061646472657373006044820152606401610750565b8060046000828254611c1d919061290a565b90915550506001600160a01b03821660009081526002602052604081208054839290611c4a90849061290a565b90915550506040518181526001600160a01b038316906000907fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef9060200160405180910390a3610faa60008383612391565b6000610878828461290a565b825460009081908015611cf35785611cc1600183612963565b81548110611cd157611cd1612a34565b60009182526020909120015464010000000090046001600160e01b0316611cf6565b60005b6001600160e01b03169250611d0f83858763ffffffff16565b9150600081118015611d4d57504386611d29600184612963565b81548110611d3957611d39612a34565b60009182526020909120015463ffffffff16145b15611dad57611d5b8261256c565b86611d67600184612963565b81548110611d7757611d77612a34565b9060005260206000200160000160046101000a8154816001600160e01b0302191690836001600160e01b03160217905550611e18565b856040518060400160405280611dc243611548565b63ffffffff168152602001611dd68561256c565b6001600160e01b0390811690915282546001810184556000938452602093849020835194909301519091166401000000000263ffffffff909316929092179101555b50935093915050565b816001600160a01b0316836001600160a01b031614158015611e435750600081115b15610793576001600160a01b03831615611ed1576001600160a01b03831660009081526009602052604081208190611e7e906120dd85611ca8565b91509150846001600160a01b03167fdec2bacdd2f05b59de34da9b523dff8be42e5e38e818c82fdb0bae774387a7248383604051611ec6929190918252602082015260400190565b60405180910390a250505b6001600160a01b03821615610793576001600160a01b03821660009081526009602052604081208190611f0790611c9c85611ca8565b91509150836001600160a01b03167fdec2bacdd2f05b59de34da9b523dff8be42e5e38e818c82fdb0bae774387a7248383604051611f4f929190918252602082015260400190565b60405180910390a25050505050565b6000826000018281548110611f7557611f75612a34565b9060005260206000200154905092915050565b6001600160a01b038216611fe85760405162461bcd60e51b815260206004820152602160248201527f45524332303a206275726e2066726f6d20746865207a65726f206164647265736044820152607360f81b6064820152608401610750565b6001600160a01b0382166000908152600260205260409020548181101561205c5760405162461bcd60e51b815260206004820152602260248201527f45524332303a206275726e20616d6f756e7420657863656564732062616c616e604482015261636560f01b6064820152608401610750565b6001600160a01b038316600090815260026020526040812083830390556004805484929061208b908490612963565b90915550506040518281526000906001600160a01b038516907fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef9060200160405180910390a361079383600084612391565b60006108788284612963565b6000807f7fffffffffffffffffffffffffffffff5d576e7357a4501ddfe92f46681b20a083111561212057506000905060036121cd565b8460ff16601b1415801561213857508460ff16601c14155b1561214957506000905060046121cd565b6040805160008082526020820180845289905260ff881692820192909252606081018690526080810185905260019060a0016020604051602081039080840390855afa15801561219d573d6000803e3d6000fd5b5050604051601f1901519150506001600160a01b0381166121c6576000600192509250506121cd565b9150600090505b94509492505050565b60008160048111156121ea576121ea612a08565b14156121f35750565b600181600481111561220757612207612a08565b14156122555760405162461bcd60e51b815260206004820152601860248201527f45434453413a20696e76616c6964207369676e617475726500000000000000006044820152606401610750565b600281600481111561226957612269612a08565b14156122b75760405162461bcd60e51b815260206004820152601f60248201527f45434453413a20696e76616c6964207369676e6174757265206c656e677468006044820152606401610750565b60038160048111156122cb576122cb612a08565b14156123245760405162461bcd60e51b815260206004820152602260248201527f45434453413a20696e76616c6964207369676e6174757265202773272076616c604482015261756560f01b6064820152608401610750565b600481600481111561233857612338612a08565b14156109af5760405162461bcd60e51b815260206004820152602260248201527f45434453413a20696e76616c6964207369676e6174757265202776272076616c604482015261756560f01b6064820152608401610750565b6001600160a01b0383811660009081526008602052604080822054858416835291205461079392918216911683611e21565b606060006123d2836002612944565b6123dd90600261290a565b67ffffffffffffffff8111156123f5576123f5612a4a565b6040519080825280601f01601f19166020018201604052801561241f576020820181803683370190505b509050600360fc1b8160008151811061243a5761243a612a34565b60200101906001600160f81b031916908160001a905350600f60fb1b8160018151811061246957612469612a34565b60200101906001600160f81b031916908160001a905350600061248d846002612944565b61249890600161290a565b90505b600181111561251d577f303132333435363738396162636465660000000000000000000000000000000085600f16601081106124d9576124d9612a34565b1a60f81b8282815181106124ef576124ef612a34565b60200101906001600160f81b031916908160001a90535060049490941c93612516816129a6565b905061249b565b5083156108785760405162461bcd60e51b815260206004820181905260248201527f537472696e67733a20686578206c656e67746820696e73756666696369656e746044820152606401610750565b60006001600160e01b038211156115c45760405162461bcd60e51b815260206004820152602760248201527f53616665436173743a2076616c756520646f65736e27742066697420696e203260448201527f32342062697473000000000000000000000000000000000000000000000000006064820152608401610750565b80356001600160a01b038116811461260257600080fd5b919050565b803560ff8116811461260257600080fd5b60006020828403121561262a57600080fd5b610878826125eb565b6000806040838503121561264657600080fd5b61264f836125eb565b915061265d602084016125eb565b90509250929050565b60008060006060848603121561267b57600080fd5b612684846125eb565b9250612692602085016125eb565b9150604084013590509250925092565b600080600080600080600060e0888a0312156126bd57600080fd5b6126c6886125eb565b96506126d4602089016125eb565b955060408801359450606088013593506126f060808901612607565b925060a0880135915060c0880135905092959891949750929550565b6000806040838503121561271f57600080fd5b612728836125eb565b946020939093013593505050565b60008060008060008060c0878903121561274f57600080fd5b612758876125eb565b9550602087013594506040870135935061277460608801612607565b92506080870135915060a087013590509295509295509295565b600080604083850312156127a157600080fd5b6127aa836125eb565b9150602083013563ffffffff811681146127c357600080fd5b809150509250929050565b6000602082840312156127e057600080fd5b5035919050565b600080604083850312156127fa57600080fd5b8235915061265d602084016125eb565b6000806040838503121561281d57600080fd5b50508035926020909101359150565b60006020828403121561283e57600080fd5b81356001600160e01b03198116811461087857600080fd5b7f416363657373436f6e74726f6c3a206163636f756e742000000000000000000081526000835161288e81601785016020880161297a565b7f206973206d697373696e6720726f6c652000000000000000000000000000000060179184019182015283516128cb81602884016020880161297a565b01602801949350505050565b60208152600082518060208401526128f681604085016020870161297a565b601f01601f19169190910160400192915050565b6000821982111561291d5761291d6129f2565b500190565b60008261293f57634e487b7160e01b600052601260045260246000fd5b500490565b600081600019048311821515161561295e5761295e6129f2565b500290565b600082821015612975576129756129f2565b500390565b60005b8381101561299557818101518382015260200161297d565b838111156114b05750506000910152565b6000816129b5576129b56129f2565b506000190190565b600181811c908216806129d157607f821691505b6020821081141561168457634e487b7160e01b600052602260045260246000fd5b634e487b7160e01b600052601160045260246000fd5b634e487b7160e01b600052602160045260246000fd5b634e487b7160e01b600052603160045260246000fd5b634e487b7160e01b600052603260045260246000fd5b634e487b7160e01b600052604160045260246000fdfea164736f6c6343000806000a0000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000044265616d0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044245414d00000000000000000000000000000000000000000000000000000000","name":"BeamToken","is_blueprint":false,"license_type":"none","is_fully_verified":false,"is_verified_via_eth_bytecode_db":true,"language":"solidity","evm_version":"berlin","can_be_visualized_via_sol2uml":true,"is_verified_via_sourcify":true,"additional_sources":[{"file_path":"@openzeppelin/contracts/access/AccessControl.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IAccessControl.sol\";\nimport \"../utils/Context.sol\";\nimport \"../utils/Strings.sol\";\nimport \"../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Contract module that allows children to implement role-based access\n * control mechanisms. This is a lightweight version that doesn't allow enumerating role\n * members except through off-chain means by accessing the contract event logs. Some\n * applications may benefit from on-chain enumerability, for those cases see\n * {AccessControlEnumerable}.\n *\n * Roles are referred to by their `bytes32` identifier. These should be exposed\n * in the external API and be unique. The best way to achieve this is by\n * using `public constant` hash digests:\n *\n * ```\n * bytes32 public constant MY_ROLE = keccak256(\"MY_ROLE\");\n * ```\n *\n * Roles can be used to represent a set of permissions. To restrict access to a\n * function call, use {hasRole}:\n *\n * ```\n * function foo() public {\n *     require(hasRole(MY_ROLE, msg.sender));\n *     ...\n * }\n * ```\n *\n * Roles can be granted and revoked dynamically via the {grantRole} and\n * {revokeRole} functions. Each role has an associated admin role, and only\n * accounts that have a role's admin role can call {grantRole} and {revokeRole}.\n *\n * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means\n * that only accounts with this role will be able to grant or revoke other\n * roles. More complex role relationships can be created by using\n * {_setRoleAdmin}.\n *\n * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to\n * grant and revoke this role. Extra precautions should be taken to secure\n * accounts that have been granted it.\n */\nabstract contract AccessControl is Context, IAccessControl, ERC165 {\n    struct RoleData {\n        mapping(address => bool) members;\n        bytes32 adminRole;\n    }\n\n    mapping(bytes32 => RoleData) private _roles;\n\n    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;\n\n    /**\n     * @dev Modifier that checks that an account has a specific role. Reverts\n     * with a standardized message including the required role.\n     *\n     * The format of the revert reason is given by the following regular expression:\n     *\n     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/\n     *\n     * _Available since v4.1._\n     */\n    modifier onlyRole(bytes32 role) {\n        _checkRole(role, _msgSender());\n        _;\n    }\n\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);\n    }\n\n    /**\n     * @dev Returns `true` if `account` has been granted `role`.\n     */\n    function hasRole(bytes32 role, address account) public view override returns (bool) {\n        return _roles[role].members[account];\n    }\n\n    /**\n     * @dev Revert with a standard message if `account` is missing `role`.\n     *\n     * The format of the revert reason is given by the following regular expression:\n     *\n     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/\n     */\n    function _checkRole(bytes32 role, address account) internal view {\n        if (!hasRole(role, account)) {\n            revert(\n                string(\n                    abi.encodePacked(\n                        \"AccessControl: account \",\n                        Strings.toHexString(uint160(account), 20),\n                        \" is missing role \",\n                        Strings.toHexString(uint256(role), 32)\n                    )\n                )\n            );\n        }\n    }\n\n    /**\n     * @dev Returns the admin role that controls `role`. See {grantRole} and\n     * {revokeRole}.\n     *\n     * To change a role's admin, use {_setRoleAdmin}.\n     */\n    function getRoleAdmin(bytes32 role) public view override returns (bytes32) {\n        return _roles[role].adminRole;\n    }\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * If `account` had not been already granted `role`, emits a {RoleGranted}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     */\n    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {\n        _grantRole(role, account);\n    }\n\n    /**\n     * @dev Revokes `role` from `account`.\n     *\n     * If `account` had been granted `role`, emits a {RoleRevoked} event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     */\n    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {\n        _revokeRole(role, account);\n    }\n\n    /**\n     * @dev Revokes `role` from the calling account.\n     *\n     * Roles are often managed via {grantRole} and {revokeRole}: this function's\n     * purpose is to provide a mechanism for accounts to lose their privileges\n     * if they are compromised (such as when a trusted device is misplaced).\n     *\n     * If the calling account had been granted `role`, emits a {RoleRevoked}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must be `account`.\n     */\n    function renounceRole(bytes32 role, address account) public virtual override {\n        require(account == _msgSender(), \"AccessControl: can only renounce roles for self\");\n\n        _revokeRole(role, account);\n    }\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * If `account` had not been already granted `role`, emits a {RoleGranted}\n     * event. Note that unlike {grantRole}, this function doesn't perform any\n     * checks on the calling account.\n     *\n     * [WARNING]\n     * ====\n     * This function should only be called from the constructor when setting\n     * up the initial roles for the system.\n     *\n     * Using this function in any other way is effectively circumventing the admin\n     * system imposed by {AccessControl}.\n     * ====\n     */\n    function _setupRole(bytes32 role, address account) internal virtual {\n        _grantRole(role, account);\n    }\n\n    /**\n     * @dev Sets `adminRole` as ``role``'s admin role.\n     *\n     * Emits a {RoleAdminChanged} event.\n     */\n    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {\n        bytes32 previousAdminRole = getRoleAdmin(role);\n        _roles[role].adminRole = adminRole;\n        emit RoleAdminChanged(role, previousAdminRole, adminRole);\n    }\n\n    function _grantRole(bytes32 role, address account) private {\n        if (!hasRole(role, account)) {\n            _roles[role].members[account] = true;\n            emit RoleGranted(role, account, _msgSender());\n        }\n    }\n\n    function _revokeRole(bytes32 role, address account) private {\n        if (hasRole(role, account)) {\n            _roles[role].members[account] = false;\n            emit RoleRevoked(role, account, _msgSender());\n        }\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/access/AccessControlEnumerable.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IAccessControlEnumerable.sol\";\nimport \"./AccessControl.sol\";\nimport \"../utils/structs/EnumerableSet.sol\";\n\n/**\n * @dev Extension of {AccessControl} that allows enumerating the members of each role.\n */\nabstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {\n    using EnumerableSet for EnumerableSet.AddressSet;\n\n    mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;\n\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId);\n    }\n\n    /**\n     * @dev Returns one of the accounts that have `role`. `index` must be a\n     * value between 0 and {getRoleMemberCount}, non-inclusive.\n     *\n     * Role bearers are not sorted in any particular way, and their ordering may\n     * change at any point.\n     *\n     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure\n     * you perform all queries on the same block. See the following\n     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]\n     * for more information.\n     */\n    function getRoleMember(bytes32 role, uint256 index) public view override returns (address) {\n        return _roleMembers[role].at(index);\n    }\n\n    /**\n     * @dev Returns the number of accounts that have `role`. Can be used\n     * together with {getRoleMember} to enumerate all bearers of a role.\n     */\n    function getRoleMemberCount(bytes32 role) public view override returns (uint256) {\n        return _roleMembers[role].length();\n    }\n\n    /**\n     * @dev Overload {grantRole} to track enumerable memberships\n     */\n    function grantRole(bytes32 role, address account) public virtual override(AccessControl, IAccessControl) {\n        super.grantRole(role, account);\n        _roleMembers[role].add(account);\n    }\n\n    /**\n     * @dev Overload {revokeRole} to track enumerable memberships\n     */\n    function revokeRole(bytes32 role, address account) public virtual override(AccessControl, IAccessControl) {\n        super.revokeRole(role, account);\n        _roleMembers[role].remove(account);\n    }\n\n    /**\n     * @dev Overload {renounceRole} to track enumerable memberships\n     */\n    function renounceRole(bytes32 role, address account) public virtual override(AccessControl, IAccessControl) {\n        super.renounceRole(role, account);\n        _roleMembers[role].remove(account);\n    }\n\n    /**\n     * @dev Overload {_setupRole} to track enumerable memberships\n     */\n    function _setupRole(bytes32 role, address account) internal virtual override {\n        super._setupRole(role, account);\n        _roleMembers[role].add(account);\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/access/IAccessControl.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev External interface of AccessControl declared to support ERC165 detection.\n */\ninterface IAccessControl {\n    /**\n     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`\n     *\n     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite\n     * {RoleAdminChanged} not being emitted signaling this.\n     *\n     * _Available since v3.1._\n     */\n    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);\n\n    /**\n     * @dev Emitted when `account` is granted `role`.\n     *\n     * `sender` is the account that originated the contract call, an admin role\n     * bearer except when using {AccessControl-_setupRole}.\n     */\n    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);\n\n    /**\n     * @dev Emitted when `account` is revoked `role`.\n     *\n     * `sender` is the account that originated the contract call:\n     *   - if using `revokeRole`, it is the admin role bearer\n     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)\n     */\n    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);\n\n    /**\n     * @dev Returns `true` if `account` has been granted `role`.\n     */\n    function hasRole(bytes32 role, address account) external view returns (bool);\n\n    /**\n     * @dev Returns the admin role that controls `role`. See {grantRole} and\n     * {revokeRole}.\n     *\n     * To change a role's admin, use {AccessControl-_setRoleAdmin}.\n     */\n    function getRoleAdmin(bytes32 role) external view returns (bytes32);\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * If `account` had not been already granted `role`, emits a {RoleGranted}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     */\n    function grantRole(bytes32 role, address account) external;\n\n    /**\n     * @dev Revokes `role` from `account`.\n     *\n     * If `account` had been granted `role`, emits a {RoleRevoked} event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     */\n    function revokeRole(bytes32 role, address account) external;\n\n    /**\n     * @dev Revokes `role` from the calling account.\n     *\n     * Roles are often managed via {grantRole} and {revokeRole}: this function's\n     * purpose is to provide a mechanism for accounts to lose their privileges\n     * if they are compromised (such as when a trusted device is misplaced).\n     *\n     * If the calling account had been granted `role`, emits a {RoleRevoked}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must be `account`.\n     */\n    function renounceRole(bytes32 role, address account) external;\n}\n"},{"file_path":"@openzeppelin/contracts/access/IAccessControlEnumerable.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IAccessControl.sol\";\n\n/**\n * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.\n */\ninterface IAccessControlEnumerable is IAccessControl {\n    /**\n     * @dev Returns one of the accounts that have `role`. `index` must be a\n     * value between 0 and {getRoleMemberCount}, non-inclusive.\n     *\n     * Role bearers are not sorted in any particular way, and their ordering may\n     * change at any point.\n     *\n     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure\n     * you perform all queries on the same block. See the following\n     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]\n     * for more information.\n     */\n    function getRoleMember(bytes32 role, uint256 index) external view returns (address);\n\n    /**\n     * @dev Returns the number of accounts that have `role`. Can be used\n     * together with {getRoleMember} to enumerate all bearers of a role.\n     */\n    function getRoleMemberCount(bytes32 role) external view returns (uint256);\n}\n"},{"file_path":"@openzeppelin/contracts/token/ERC20/ERC20.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n    mapping(address => uint256) private _balances;\n\n    mapping(address => mapping(address => uint256)) private _allowances;\n\n    uint256 private _totalSupply;\n\n    string private _name;\n    string private _symbol;\n\n    /**\n     * @dev Sets the values for {name} and {symbol}.\n     *\n     * The default value of {decimals} is 18. To select a different value for\n     * {decimals} you should overload it.\n     *\n     * All two of these values are immutable: they can only be set once during\n     * construction.\n     */\n    constructor(string memory name_, string memory symbol_) {\n        _name = name_;\n        _symbol = symbol_;\n    }\n\n    /**\n     * @dev Returns the name of the token.\n     */\n    function name() public view virtual override returns (string memory) {\n        return _name;\n    }\n\n    /**\n     * @dev Returns the symbol of the token, usually a shorter version of the\n     * name.\n     */\n    function symbol() public view virtual override returns (string memory) {\n        return _symbol;\n    }\n\n    /**\n     * @dev Returns the number of decimals used to get its user representation.\n     * For example, if `decimals` equals `2`, a balance of `505` tokens should\n     * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n     *\n     * Tokens usually opt for a value of 18, imitating the relationship between\n     * Ether and Wei. This is the value {ERC20} uses, unless this function is\n     * overridden;\n     *\n     * NOTE: This information is only used for _display_ purposes: it in\n     * no way affects any of the arithmetic of the contract, including\n     * {IERC20-balanceOf} and {IERC20-transfer}.\n     */\n    function decimals() public view virtual override returns (uint8) {\n        return 18;\n    }\n\n    /**\n     * @dev See {IERC20-totalSupply}.\n     */\n    function totalSupply() public view virtual override returns (uint256) {\n        return _totalSupply;\n    }\n\n    /**\n     * @dev See {IERC20-balanceOf}.\n     */\n    function balanceOf(address account) public view virtual override returns (uint256) {\n        return _balances[account];\n    }\n\n    /**\n     * @dev See {IERC20-transfer}.\n     *\n     * Requirements:\n     *\n     * - `recipient` cannot be the zero address.\n     * - the caller must have a balance of at least `amount`.\n     */\n    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {\n        _transfer(_msgSender(), recipient, amount);\n        return true;\n    }\n\n    /**\n     * @dev See {IERC20-allowance}.\n     */\n    function allowance(address owner, address spender) public view virtual override returns (uint256) {\n        return _allowances[owner][spender];\n    }\n\n    /**\n     * @dev See {IERC20-approve}.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     */\n    function approve(address spender, uint256 amount) public virtual override returns (bool) {\n        _approve(_msgSender(), spender, amount);\n        return true;\n    }\n\n    /**\n     * @dev See {IERC20-transferFrom}.\n     *\n     * Emits an {Approval} event indicating the updated allowance. This is not\n     * required by the EIP. See the note at the beginning of {ERC20}.\n     *\n     * Requirements:\n     *\n     * - `sender` and `recipient` cannot be the zero address.\n     * - `sender` must have a balance of at least `amount`.\n     * - the caller must have allowance for ``sender``'s tokens of at least\n     * `amount`.\n     */\n    function transferFrom(\n        address sender,\n        address recipient,\n        uint256 amount\n    ) public virtual override returns (bool) {\n        _transfer(sender, recipient, amount);\n\n        uint256 currentAllowance = _allowances[sender][_msgSender()];\n        require(currentAllowance >= amount, \"ERC20: transfer amount exceeds allowance\");\n        unchecked {\n            _approve(sender, _msgSender(), currentAllowance - amount);\n        }\n\n        return true;\n    }\n\n    /**\n     * @dev Atomically increases the allowance granted to `spender` by the caller.\n     *\n     * This is an alternative to {approve} that can be used as a mitigation for\n     * problems described in {IERC20-approve}.\n     *\n     * Emits an {Approval} event indicating the updated allowance.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     */\n    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);\n        return true;\n    }\n\n    /**\n     * @dev Atomically decreases the allowance granted to `spender` by the caller.\n     *\n     * This is an alternative to {approve} that can be used as a mitigation for\n     * problems described in {IERC20-approve}.\n     *\n     * Emits an {Approval} event indicating the updated allowance.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     * - `spender` must have allowance for the caller of at least\n     * `subtractedValue`.\n     */\n    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n        uint256 currentAllowance = _allowances[_msgSender()][spender];\n        require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n        unchecked {\n            _approve(_msgSender(), spender, currentAllowance - subtractedValue);\n        }\n\n        return true;\n    }\n\n    /**\n     * @dev Moves `amount` of tokens from `sender` to `recipient`.\n     *\n     * This internal function is equivalent to {transfer}, and can be used to\n     * e.g. implement automatic token fees, slashing mechanisms, etc.\n     *\n     * Emits a {Transfer} event.\n     *\n     * Requirements:\n     *\n     * - `sender` cannot be the zero address.\n     * - `recipient` cannot be the zero address.\n     * - `sender` must have a balance of at least `amount`.\n     */\n    function _transfer(\n        address sender,\n        address recipient,\n        uint256 amount\n    ) internal virtual {\n        require(sender != address(0), \"ERC20: transfer from the zero address\");\n        require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n        _beforeTokenTransfer(sender, recipient, amount);\n\n        uint256 senderBalance = _balances[sender];\n        require(senderBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n        unchecked {\n            _balances[sender] = senderBalance - amount;\n        }\n        _balances[recipient] += amount;\n\n        emit Transfer(sender, recipient, amount);\n\n        _afterTokenTransfer(sender, recipient, amount);\n    }\n\n    /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n     * the total supply.\n     *\n     * Emits a {Transfer} event with `from` set to the zero address.\n     *\n     * Requirements:\n     *\n     * - `account` cannot be the zero address.\n     */\n    function _mint(address account, uint256 amount) internal virtual {\n        require(account != address(0), \"ERC20: mint to the zero address\");\n\n        _beforeTokenTransfer(address(0), account, amount);\n\n        _totalSupply += amount;\n        _balances[account] += amount;\n        emit Transfer(address(0), account, amount);\n\n        _afterTokenTransfer(address(0), account, amount);\n    }\n\n    /**\n     * @dev Destroys `amount` tokens from `account`, reducing the\n     * total supply.\n     *\n     * Emits a {Transfer} event with `to` set to the zero address.\n     *\n     * Requirements:\n     *\n     * - `account` cannot be the zero address.\n     * - `account` must have at least `amount` tokens.\n     */\n    function _burn(address account, uint256 amount) internal virtual {\n        require(account != address(0), \"ERC20: burn from the zero address\");\n\n        _beforeTokenTransfer(account, address(0), amount);\n\n        uint256 accountBalance = _balances[account];\n        require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n        unchecked {\n            _balances[account] = accountBalance - amount;\n        }\n        _totalSupply -= amount;\n\n        emit Transfer(account, address(0), amount);\n\n        _afterTokenTransfer(account, address(0), amount);\n    }\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n     *\n     * This internal function is equivalent to `approve`, and can be used to\n     * e.g. set automatic allowances for certain subsystems, etc.\n     *\n     * Emits an {Approval} event.\n     *\n     * Requirements:\n     *\n     * - `owner` cannot be the zero address.\n     * - `spender` cannot be the zero address.\n     */\n    function _approve(\n        address owner,\n        address spender,\n        uint256 amount\n    ) internal virtual {\n        require(owner != address(0), \"ERC20: approve from the zero address\");\n        require(spender != address(0), \"ERC20: approve to the zero address\");\n\n        _allowances[owner][spender] = amount;\n        emit Approval(owner, spender, amount);\n    }\n\n    /**\n     * @dev Hook that is called before any transfer of tokens. This includes\n     * minting and burning.\n     *\n     * Calling conditions:\n     *\n     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n     * will be transferred to `to`.\n     * - when `from` is zero, `amount` tokens will be minted for `to`.\n     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n     * - `from` and `to` are never both zero.\n     *\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n     */\n    function _beforeTokenTransfer(\n        address from,\n        address to,\n        uint256 amount\n    ) internal virtual {}\n\n    /**\n     * @dev Hook that is called after any transfer of tokens. This includes\n     * minting and burning.\n     *\n     * Calling conditions:\n     *\n     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n     * has been transferred to `to`.\n     * - when `from` is zero, `amount` tokens have been minted for `to`.\n     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n     * - `from` and `to` are never both zero.\n     *\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n     */\n    function _afterTokenTransfer(\n        address from,\n        address to,\n        uint256 amount\n    ) internal virtual {}\n}\n"},{"file_path":"@openzeppelin/contracts/token/ERC20/IERC20.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `recipient`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address recipient, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `sender` to `recipient` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address sender,\n        address recipient,\n        uint256 amount\n    ) external returns (bool);\n\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n"},{"file_path":"@openzeppelin/contracts/token/ERC20/extensions/ERC20Votes.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./draft-ERC20Permit.sol\";\nimport \"../../../utils/math/Math.sol\";\nimport \"../../../utils/math/SafeCast.sol\";\nimport \"../../../utils/cryptography/ECDSA.sol\";\n\n/**\n * @dev Extension of ERC20 to support Compound-like voting and delegation. This version is more generic than Compound's,\n * and supports token supply up to 2^224^ - 1, while COMP is limited to 2^96^ - 1.\n *\n * NOTE: If exact COMP compatibility is required, use the {ERC20VotesComp} variant of this module.\n *\n * This extension keeps a history (checkpoints) of each account's vote power. Vote power can be delegated either\n * by calling the {delegate} function directly, or by providing a signature to be used with {delegateBySig}. Voting\n * power can be queried through the public accessors {getVotes} and {getPastVotes}.\n *\n * By default, token balance does not account for voting power. This makes transfers cheaper. The downside is that it\n * requires users to delegate to themselves in order to activate checkpoints and have their voting power tracked.\n * Enabling self-delegation can easily be done by overriding the {delegates} function. Keep in mind however that this\n * will significantly increase the base gas cost of transfers.\n *\n * _Available since v4.2._\n */\nabstract contract ERC20Votes is ERC20Permit {\n    struct Checkpoint {\n        uint32 fromBlock;\n        uint224 votes;\n    }\n\n    bytes32 private constant _DELEGATION_TYPEHASH =\n        keccak256(\"Delegation(address delegatee,uint256 nonce,uint256 expiry)\");\n\n    mapping(address => address) private _delegates;\n    mapping(address => Checkpoint[]) private _checkpoints;\n    Checkpoint[] private _totalSupplyCheckpoints;\n\n    /**\n     * @dev Emitted when an account changes their delegate.\n     */\n    event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);\n\n    /**\n     * @dev Emitted when a token transfer or delegate change results in changes to an account's voting power.\n     */\n    event DelegateVotesChanged(address indexed delegate, uint256 previousBalance, uint256 newBalance);\n\n    /**\n     * @dev Get the `pos`-th checkpoint for `account`.\n     */\n    function checkpoints(address account, uint32 pos) public view virtual returns (Checkpoint memory) {\n        return _checkpoints[account][pos];\n    }\n\n    /**\n     * @dev Get number of checkpoints for `account`.\n     */\n    function numCheckpoints(address account) public view virtual returns (uint32) {\n        return SafeCast.toUint32(_checkpoints[account].length);\n    }\n\n    /**\n     * @dev Get the address `account` is currently delegating to.\n     */\n    function delegates(address account) public view virtual returns (address) {\n        return _delegates[account];\n    }\n\n    /**\n     * @dev Gets the current votes balance for `account`\n     */\n    function getVotes(address account) public view returns (uint256) {\n        uint256 pos = _checkpoints[account].length;\n        return pos == 0 ? 0 : _checkpoints[account][pos - 1].votes;\n    }\n\n    /**\n     * @dev Retrieve the number of votes for `account` at the end of `blockNumber`.\n     *\n     * Requirements:\n     *\n     * - `blockNumber` must have been already mined\n     */\n    function getPastVotes(address account, uint256 blockNumber) public view returns (uint256) {\n        require(blockNumber < block.number, \"ERC20Votes: block not yet mined\");\n        return _checkpointsLookup(_checkpoints[account], blockNumber);\n    }\n\n    /**\n     * @dev Retrieve the `totalSupply` at the end of `blockNumber`. Note, this value is the sum of all balances.\n     * It is but NOT the sum of all the delegated votes!\n     *\n     * Requirements:\n     *\n     * - `blockNumber` must have been already mined\n     */\n    function getPastTotalSupply(uint256 blockNumber) public view returns (uint256) {\n        require(blockNumber < block.number, \"ERC20Votes: block not yet mined\");\n        return _checkpointsLookup(_totalSupplyCheckpoints, blockNumber);\n    }\n\n    /**\n     * @dev Lookup a value in a list of (sorted) checkpoints.\n     */\n    function _checkpointsLookup(Checkpoint[] storage ckpts, uint256 blockNumber) private view returns (uint256) {\n        // We run a binary search to look for the earliest checkpoint taken after `blockNumber`.\n        //\n        // During the loop, the index of the wanted checkpoint remains in the range [low-1, high).\n        // With each iteration, either `low` or `high` is moved towards the middle of the range to maintain the invariant.\n        // - If the middle checkpoint is after `blockNumber`, we look in [low, mid)\n        // - If the middle checkpoint is before or equal to `blockNumber`, we look in [mid+1, high)\n        // Once we reach a single value (when low == high), we've found the right checkpoint at the index high-1, if not\n        // out of bounds (in which case we're looking too far in the past and the result is 0).\n        // Note that if the latest checkpoint available is exactly for `blockNumber`, we end up with an index that is\n        // past the end of the array, so we technically don't find a checkpoint after `blockNumber`, but it works out\n        // the same.\n        uint256 high = ckpts.length;\n        uint256 low = 0;\n        while (low < high) {\n            uint256 mid = Math.average(low, high);\n            if (ckpts[mid].fromBlock > blockNumber) {\n                high = mid;\n            } else {\n                low = mid + 1;\n            }\n        }\n\n        return high == 0 ? 0 : ckpts[high - 1].votes;\n    }\n\n    /**\n     * @dev Delegate votes from the sender to `delegatee`.\n     */\n    function delegate(address delegatee) public virtual {\n        return _delegate(_msgSender(), delegatee);\n    }\n\n    /**\n     * @dev Delegates votes from signer to `delegatee`\n     */\n    function delegateBySig(\n        address delegatee,\n        uint256 nonce,\n        uint256 expiry,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) public virtual {\n        require(block.timestamp <= expiry, \"ERC20Votes: signature expired\");\n        address signer = ECDSA.recover(\n            _hashTypedDataV4(keccak256(abi.encode(_DELEGATION_TYPEHASH, delegatee, nonce, expiry))),\n            v,\n            r,\n            s\n        );\n        require(nonce == _useNonce(signer), \"ERC20Votes: invalid nonce\");\n        return _delegate(signer, delegatee);\n    }\n\n    /**\n     * @dev Maximum token supply. Defaults to `type(uint224).max` (2^224^ - 1).\n     */\n    function _maxSupply() internal view virtual returns (uint224) {\n        return type(uint224).max;\n    }\n\n    /**\n     * @dev Snapshots the totalSupply after it has been increased.\n     */\n    function _mint(address account, uint256 amount) internal virtual override {\n        super._mint(account, amount);\n        require(totalSupply() <= _maxSupply(), \"ERC20Votes: total supply risks overflowing votes\");\n\n        _writeCheckpoint(_totalSupplyCheckpoints, _add, amount);\n    }\n\n    /**\n     * @dev Snapshots the totalSupply after it has been decreased.\n     */\n    function _burn(address account, uint256 amount) internal virtual override {\n        super._burn(account, amount);\n\n        _writeCheckpoint(_totalSupplyCheckpoints, _subtract, amount);\n    }\n\n    /**\n     * @dev Move voting power when tokens are transferred.\n     *\n     * Emits a {DelegateVotesChanged} event.\n     */\n    function _afterTokenTransfer(\n        address from,\n        address to,\n        uint256 amount\n    ) internal virtual override {\n        super._afterTokenTransfer(from, to, amount);\n\n        _moveVotingPower(delegates(from), delegates(to), amount);\n    }\n\n    /**\n     * @dev Change delegation for `delegator` to `delegatee`.\n     *\n     * Emits events {DelegateChanged} and {DelegateVotesChanged}.\n     */\n    function _delegate(address delegator, address delegatee) internal virtual {\n        address currentDelegate = delegates(delegator);\n        uint256 delegatorBalance = balanceOf(delegator);\n        _delegates[delegator] = delegatee;\n\n        emit DelegateChanged(delegator, currentDelegate, delegatee);\n\n        _moveVotingPower(currentDelegate, delegatee, delegatorBalance);\n    }\n\n    function _moveVotingPower(\n        address src,\n        address dst,\n        uint256 amount\n    ) private {\n        if (src != dst && amount > 0) {\n            if (src != address(0)) {\n                (uint256 oldWeight, uint256 newWeight) = _writeCheckpoint(_checkpoints[src], _subtract, amount);\n                emit DelegateVotesChanged(src, oldWeight, newWeight);\n            }\n\n            if (dst != address(0)) {\n                (uint256 oldWeight, uint256 newWeight) = _writeCheckpoint(_checkpoints[dst], _add, amount);\n                emit DelegateVotesChanged(dst, oldWeight, newWeight);\n            }\n        }\n    }\n\n    function _writeCheckpoint(\n        Checkpoint[] storage ckpts,\n        function(uint256, uint256) view returns (uint256) op,\n        uint256 delta\n    ) private returns (uint256 oldWeight, uint256 newWeight) {\n        uint256 pos = ckpts.length;\n        oldWeight = pos == 0 ? 0 : ckpts[pos - 1].votes;\n        newWeight = op(oldWeight, delta);\n\n        if (pos > 0 && ckpts[pos - 1].fromBlock == block.number) {\n            ckpts[pos - 1].votes = SafeCast.toUint224(newWeight);\n        } else {\n            ckpts.push(Checkpoint({fromBlock: SafeCast.toUint32(block.number), votes: SafeCast.toUint224(newWeight)}));\n        }\n    }\n\n    function _add(uint256 a, uint256 b) private pure returns (uint256) {\n        return a + b;\n    }\n\n    function _subtract(uint256 a, uint256 b) private pure returns (uint256) {\n        return a - b;\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n    /**\n     * @dev Returns the name of the token.\n     */\n    function name() external view returns (string memory);\n\n    /**\n     * @dev Returns the symbol of the token.\n     */\n    function symbol() external view returns (string memory);\n\n    /**\n     * @dev Returns the decimals places of the token.\n     */\n    function decimals() external view returns (uint8);\n}\n"},{"file_path":"@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./draft-IERC20Permit.sol\";\nimport \"../ERC20.sol\";\nimport \"../../../utils/cryptography/draft-EIP712.sol\";\nimport \"../../../utils/cryptography/ECDSA.sol\";\nimport \"../../../utils/Counters.sol\";\n\n/**\n * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in\n * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].\n *\n * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by\n * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't\n * need to send a transaction, and thus is not required to hold Ether at all.\n *\n * _Available since v3.4._\n */\nabstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {\n    using Counters for Counters.Counter;\n\n    mapping(address => Counters.Counter) private _nonces;\n\n    // solhint-disable-next-line var-name-mixedcase\n    bytes32 private immutable _PERMIT_TYPEHASH =\n        keccak256(\"Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)\");\n\n    /**\n     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `\"1\"`.\n     *\n     * It's a good idea to use the same `name` that is defined as the ERC20 token name.\n     */\n    constructor(string memory name) EIP712(name, \"1\") {}\n\n    /**\n     * @dev See {IERC20Permit-permit}.\n     */\n    function permit(\n        address owner,\n        address spender,\n        uint256 value,\n        uint256 deadline,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) public virtual override {\n        require(block.timestamp <= deadline, \"ERC20Permit: expired deadline\");\n\n        bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));\n\n        bytes32 hash = _hashTypedDataV4(structHash);\n\n        address signer = ECDSA.recover(hash, v, r, s);\n        require(signer == owner, \"ERC20Permit: invalid signature\");\n\n        _approve(owner, spender, value);\n    }\n\n    /**\n     * @dev See {IERC20Permit-nonces}.\n     */\n    function nonces(address owner) public view virtual override returns (uint256) {\n        return _nonces[owner].current();\n    }\n\n    /**\n     * @dev See {IERC20Permit-DOMAIN_SEPARATOR}.\n     */\n    // solhint-disable-next-line func-name-mixedcase\n    function DOMAIN_SEPARATOR() external view override returns (bytes32) {\n        return _domainSeparatorV4();\n    }\n\n    /**\n     * @dev \"Consume a nonce\": return the current value and increment.\n     *\n     * _Available since v4.1._\n     */\n    function _useNonce(address owner) internal virtual returns (uint256 current) {\n        Counters.Counter storage nonce = _nonces[owner];\n        current = nonce.current();\n        nonce.increment();\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in\n * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].\n *\n * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by\n * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't\n * need to send a transaction, and thus is not required to hold Ether at all.\n */\ninterface IERC20Permit {\n    /**\n     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,\n     * given ``owner``'s signed approval.\n     *\n     * IMPORTANT: The same issues {IERC20-approve} has related to transaction\n     * ordering also apply here.\n     *\n     * Emits an {Approval} event.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     * - `deadline` must be a timestamp in the future.\n     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`\n     * over the EIP712-formatted function arguments.\n     * - the signature must use ``owner``'s current nonce (see {nonces}).\n     *\n     * For more information on the signature format, see the\n     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP\n     * section].\n     */\n    function permit(\n        address owner,\n        address spender,\n        uint256 value,\n        uint256 deadline,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) external;\n\n    /**\n     * @dev Returns the current nonce for `owner`. This value must be\n     * included whenever a signature is generated for {permit}.\n     *\n     * Every successful call to {permit} increases ``owner``'s nonce by one. This\n     * prevents a signature from being used multiple times.\n     */\n    function nonces(address owner) external view returns (uint256);\n\n    /**\n     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.\n     */\n    // solhint-disable-next-line func-name-mixedcase\n    function DOMAIN_SEPARATOR() external view returns (bytes32);\n}\n"},{"file_path":"@openzeppelin/contracts/utils/Context.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/utils/Counters.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @title Counters\n * @author Matt Condon (@shrugs)\n * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number\n * of elements in a mapping, issuing ERC721 ids, or counting request ids.\n *\n * Include with `using Counters for Counters.Counter;`\n */\nlibrary Counters {\n    struct Counter {\n        // This variable should never be directly accessed by users of the library: interactions must be restricted to\n        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add\n        // this feature: see https://github.com/ethereum/solidity/issues/4637\n        uint256 _value; // default: 0\n    }\n\n    function current(Counter storage counter) internal view returns (uint256) {\n        return counter._value;\n    }\n\n    function increment(Counter storage counter) internal {\n        unchecked {\n            counter._value += 1;\n        }\n    }\n\n    function decrement(Counter storage counter) internal {\n        uint256 value = counter._value;\n        require(value > 0, \"Counter: decrement overflow\");\n        unchecked {\n            counter._value = value - 1;\n        }\n    }\n\n    function reset(Counter storage counter) internal {\n        counter._value = 0;\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/utils/Strings.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n    bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n     */\n    function toString(uint256 value) internal pure returns (string memory) {\n        // Inspired by OraclizeAPI's implementation - MIT licence\n        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n        if (value == 0) {\n            return \"0\";\n        }\n        uint256 temp = value;\n        uint256 digits;\n        while (temp != 0) {\n            digits++;\n            temp /= 10;\n        }\n        bytes memory buffer = new bytes(digits);\n        while (value != 0) {\n            digits -= 1;\n            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n            value /= 10;\n        }\n        return string(buffer);\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n     */\n    function toHexString(uint256 value) internal pure returns (string memory) {\n        if (value == 0) {\n            return \"0x00\";\n        }\n        uint256 temp = value;\n        uint256 length = 0;\n        while (temp != 0) {\n            length++;\n            temp >>= 8;\n        }\n        return toHexString(value, length);\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n     */\n    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n        bytes memory buffer = new bytes(2 * length + 2);\n        buffer[0] = \"0\";\n        buffer[1] = \"x\";\n        for (uint256 i = 2 * length + 1; i > 1; --i) {\n            buffer[i] = _HEX_SYMBOLS[value & 0xf];\n            value >>= 4;\n        }\n        require(value == 0, \"Strings: hex length insufficient\");\n        return string(buffer);\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/utils/cryptography/ECDSA.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.\n *\n * These functions can be used to verify that a message was signed by the holder\n * of the private keys of a given address.\n */\nlibrary ECDSA {\n    enum RecoverError {\n        NoError,\n        InvalidSignature,\n        InvalidSignatureLength,\n        InvalidSignatureS,\n        InvalidSignatureV\n    }\n\n    function _throwError(RecoverError error) private pure {\n        if (error == RecoverError.NoError) {\n            return; // no error: do nothing\n        } else if (error == RecoverError.InvalidSignature) {\n            revert(\"ECDSA: invalid signature\");\n        } else if (error == RecoverError.InvalidSignatureLength) {\n            revert(\"ECDSA: invalid signature length\");\n        } else if (error == RecoverError.InvalidSignatureS) {\n            revert(\"ECDSA: invalid signature 's' value\");\n        } else if (error == RecoverError.InvalidSignatureV) {\n            revert(\"ECDSA: invalid signature 'v' value\");\n        }\n    }\n\n    /**\n     * @dev Returns the address that signed a hashed message (`hash`) with\n     * `signature` or error string. This address can then be used for verification purposes.\n     *\n     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n     * this function rejects them by requiring the `s` value to be in the lower\n     * half order, and the `v` value to be either 27 or 28.\n     *\n     * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n     * verification to be secure: it is possible to craft signatures that\n     * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n     * this is by receiving a hash of the original message (which may otherwise\n     * be too long), and then calling {toEthSignedMessageHash} on it.\n     *\n     * Documentation for signature generation:\n     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]\n     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]\n     *\n     * _Available since v4.3._\n     */\n    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {\n        // Check the signature length\n        // - case 65: r,s,v signature (standard)\n        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._\n        if (signature.length == 65) {\n            bytes32 r;\n            bytes32 s;\n            uint8 v;\n            // ecrecover takes the signature parameters, and the only way to get them\n            // currently is to use assembly.\n            assembly {\n                r := mload(add(signature, 0x20))\n                s := mload(add(signature, 0x40))\n                v := byte(0, mload(add(signature, 0x60)))\n            }\n            return tryRecover(hash, v, r, s);\n        } else if (signature.length == 64) {\n            bytes32 r;\n            bytes32 vs;\n            // ecrecover takes the signature parameters, and the only way to get them\n            // currently is to use assembly.\n            assembly {\n                r := mload(add(signature, 0x20))\n                vs := mload(add(signature, 0x40))\n            }\n            return tryRecover(hash, r, vs);\n        } else {\n            return (address(0), RecoverError.InvalidSignatureLength);\n        }\n    }\n\n    /**\n     * @dev Returns the address that signed a hashed message (`hash`) with\n     * `signature`. This address can then be used for verification purposes.\n     *\n     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n     * this function rejects them by requiring the `s` value to be in the lower\n     * half order, and the `v` value to be either 27 or 28.\n     *\n     * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n     * verification to be secure: it is possible to craft signatures that\n     * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n     * this is by receiving a hash of the original message (which may otherwise\n     * be too long), and then calling {toEthSignedMessageHash} on it.\n     */\n    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {\n        (address recovered, RecoverError error) = tryRecover(hash, signature);\n        _throwError(error);\n        return recovered;\n    }\n\n    /**\n     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.\n     *\n     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]\n     *\n     * _Available since v4.3._\n     */\n    function tryRecover(\n        bytes32 hash,\n        bytes32 r,\n        bytes32 vs\n    ) internal pure returns (address, RecoverError) {\n        bytes32 s;\n        uint8 v;\n        assembly {\n            s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)\n            v := add(shr(255, vs), 27)\n        }\n        return tryRecover(hash, v, r, s);\n    }\n\n    /**\n     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.\n     *\n     * _Available since v4.2._\n     */\n    function recover(\n        bytes32 hash,\n        bytes32 r,\n        bytes32 vs\n    ) internal pure returns (address) {\n        (address recovered, RecoverError error) = tryRecover(hash, r, vs);\n        _throwError(error);\n        return recovered;\n    }\n\n    /**\n     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,\n     * `r` and `s` signature fields separately.\n     *\n     * _Available since v4.3._\n     */\n    function tryRecover(\n        bytes32 hash,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) internal pure returns (address, RecoverError) {\n        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature\n        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines\n        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most\n        // signatures from current libraries generate a unique signature with an s-value in the lower half order.\n        //\n        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value\n        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or\n        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept\n        // these malleable signatures as well.\n        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {\n            return (address(0), RecoverError.InvalidSignatureS);\n        }\n        if (v != 27 && v != 28) {\n            return (address(0), RecoverError.InvalidSignatureV);\n        }\n\n        // If the signature is valid (and not malleable), return the signer address\n        address signer = ecrecover(hash, v, r, s);\n        if (signer == address(0)) {\n            return (address(0), RecoverError.InvalidSignature);\n        }\n\n        return (signer, RecoverError.NoError);\n    }\n\n    /**\n     * @dev Overload of {ECDSA-recover} that receives the `v`,\n     * `r` and `s` signature fields separately.\n     */\n    function recover(\n        bytes32 hash,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) internal pure returns (address) {\n        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);\n        _throwError(error);\n        return recovered;\n    }\n\n    /**\n     * @dev Returns an Ethereum Signed Message, created from a `hash`. This\n     * produces hash corresponding to the one signed with the\n     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n     * JSON-RPC method as part of EIP-191.\n     *\n     * See {recover}.\n     */\n    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {\n        // 32 is the length in bytes of hash,\n        // enforced by the type signature above\n        return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n32\", hash));\n    }\n\n    /**\n     * @dev Returns an Ethereum Signed Typed Data, created from a\n     * `domainSeparator` and a `structHash`. This produces hash corresponding\n     * to the one signed with the\n     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]\n     * JSON-RPC method as part of EIP-712.\n     *\n     * See {recover}.\n     */\n    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {\n        return keccak256(abi.encodePacked(\"\\x19\\x01\", domainSeparator, structHash));\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./ECDSA.sol\";\n\n/**\n * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.\n *\n * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,\n * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding\n * they need in their contracts using a combination of `abi.encode` and `keccak256`.\n *\n * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding\n * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA\n * ({_hashTypedDataV4}).\n *\n * The implementation of the domain separator was designed to be as efficient as possible while still properly updating\n * the chain id to protect against replay attacks on an eventual fork of the chain.\n *\n * NOTE: This contract implements the version of the encoding known as \"v4\", as implemented by the JSON RPC method\n * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].\n *\n * _Available since v3.4._\n */\nabstract contract EIP712 {\n    /* solhint-disable var-name-mixedcase */\n    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to\n    // invalidate the cached domain separator if the chain id changes.\n    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;\n    uint256 private immutable _CACHED_CHAIN_ID;\n\n    bytes32 private immutable _HASHED_NAME;\n    bytes32 private immutable _HASHED_VERSION;\n    bytes32 private immutable _TYPE_HASH;\n\n    /* solhint-enable var-name-mixedcase */\n\n    /**\n     * @dev Initializes the domain separator and parameter caches.\n     *\n     * The meaning of `name` and `version` is specified in\n     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:\n     *\n     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.\n     * - `version`: the current major version of the signing domain.\n     *\n     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart\n     * contract upgrade].\n     */\n    constructor(string memory name, string memory version) {\n        bytes32 hashedName = keccak256(bytes(name));\n        bytes32 hashedVersion = keccak256(bytes(version));\n        bytes32 typeHash = keccak256(\n            \"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\"\n        );\n        _HASHED_NAME = hashedName;\n        _HASHED_VERSION = hashedVersion;\n        _CACHED_CHAIN_ID = block.chainid;\n        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);\n        _TYPE_HASH = typeHash;\n    }\n\n    /**\n     * @dev Returns the domain separator for the current chain.\n     */\n    function _domainSeparatorV4() internal view returns (bytes32) {\n        if (block.chainid == _CACHED_CHAIN_ID) {\n            return _CACHED_DOMAIN_SEPARATOR;\n        } else {\n            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);\n        }\n    }\n\n    function _buildDomainSeparator(\n        bytes32 typeHash,\n        bytes32 nameHash,\n        bytes32 versionHash\n    ) private view returns (bytes32) {\n        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));\n    }\n\n    /**\n     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this\n     * function returns the hash of the fully encoded EIP712 message for this domain.\n     *\n     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:\n     *\n     * ```solidity\n     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(\n     *     keccak256(\"Mail(address to,string contents)\"),\n     *     mailTo,\n     *     keccak256(bytes(mailContents))\n     * )));\n     * address signer = ECDSA.recover(digest, signature);\n     * ```\n     */\n    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {\n        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/utils/introspection/ERC165.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IERC165).interfaceId;\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/utils/introspection/IERC165.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"},{"file_path":"@openzeppelin/contracts/utils/math/Math.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard math utilities missing in the Solidity language.\n */\nlibrary Math {\n    /**\n     * @dev Returns the largest of two numbers.\n     */\n    function max(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a >= b ? a : b;\n    }\n\n    /**\n     * @dev Returns the smallest of two numbers.\n     */\n    function min(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a < b ? a : b;\n    }\n\n    /**\n     * @dev Returns the average of two numbers. The result is rounded towards\n     * zero.\n     */\n    function average(uint256 a, uint256 b) internal pure returns (uint256) {\n        // (a + b) / 2 can overflow.\n        return (a & b) + (a ^ b) / 2;\n    }\n\n    /**\n     * @dev Returns the ceiling of the division of two numbers.\n     *\n     * This differs from standard division with `/` in that it rounds up instead\n     * of rounding down.\n     */\n    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n        // (a + b - 1) / b can overflow on addition, so we distribute.\n        return a / b + (a % b == 0 ? 0 : 1);\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/utils/math/SafeCast.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow\n * checks.\n *\n * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can\n * easily result in undesired exploitation or bugs, since developers usually\n * assume that overflows raise errors. `SafeCast` restores this intuition by\n * reverting the transaction when such an operation overflows.\n *\n * Using this library instead of the unchecked operations eliminates an entire\n * class of bugs, so it's recommended to use it always.\n *\n * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing\n * all math on `uint256` and `int256` and then downcasting.\n */\nlibrary SafeCast {\n    /**\n     * @dev Returns the downcasted uint224 from uint256, reverting on\n     * overflow (when the input is greater than largest uint224).\n     *\n     * Counterpart to Solidity's `uint224` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 224 bits\n     */\n    function toUint224(uint256 value) internal pure returns (uint224) {\n        require(value <= type(uint224).max, \"SafeCast: value doesn't fit in 224 bits\");\n        return uint224(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint128 from uint256, reverting on\n     * overflow (when the input is greater than largest uint128).\n     *\n     * Counterpart to Solidity's `uint128` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 128 bits\n     */\n    function toUint128(uint256 value) internal pure returns (uint128) {\n        require(value <= type(uint128).max, \"SafeCast: value doesn't fit in 128 bits\");\n        return uint128(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint96 from uint256, reverting on\n     * overflow (when the input is greater than largest uint96).\n     *\n     * Counterpart to Solidity's `uint96` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 96 bits\n     */\n    function toUint96(uint256 value) internal pure returns (uint96) {\n        require(value <= type(uint96).max, \"SafeCast: value doesn't fit in 96 bits\");\n        return uint96(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint64 from uint256, reverting on\n     * overflow (when the input is greater than largest uint64).\n     *\n     * Counterpart to Solidity's `uint64` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 64 bits\n     */\n    function toUint64(uint256 value) internal pure returns (uint64) {\n        require(value <= type(uint64).max, \"SafeCast: value doesn't fit in 64 bits\");\n        return uint64(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint32 from uint256, reverting on\n     * overflow (when the input is greater than largest uint32).\n     *\n     * Counterpart to Solidity's `uint32` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 32 bits\n     */\n    function toUint32(uint256 value) internal pure returns (uint32) {\n        require(value <= type(uint32).max, \"SafeCast: value doesn't fit in 32 bits\");\n        return uint32(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint16 from uint256, reverting on\n     * overflow (when the input is greater than largest uint16).\n     *\n     * Counterpart to Solidity's `uint16` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 16 bits\n     */\n    function toUint16(uint256 value) internal pure returns (uint16) {\n        require(value <= type(uint16).max, \"SafeCast: value doesn't fit in 16 bits\");\n        return uint16(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint8 from uint256, reverting on\n     * overflow (when the input is greater than largest uint8).\n     *\n     * Counterpart to Solidity's `uint8` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 8 bits.\n     */\n    function toUint8(uint256 value) internal pure returns (uint8) {\n        require(value <= type(uint8).max, \"SafeCast: value doesn't fit in 8 bits\");\n        return uint8(value);\n    }\n\n    /**\n     * @dev Converts a signed int256 into an unsigned uint256.\n     *\n     * Requirements:\n     *\n     * - input must be greater than or equal to 0.\n     */\n    function toUint256(int256 value) internal pure returns (uint256) {\n        require(value >= 0, \"SafeCast: value must be positive\");\n        return uint256(value);\n    }\n\n    /**\n     * @dev Returns the downcasted int128 from int256, reverting on\n     * overflow (when the input is less than smallest int128 or\n     * greater than largest int128).\n     *\n     * Counterpart to Solidity's `int128` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 128 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt128(int256 value) internal pure returns (int128) {\n        require(value >= type(int128).min && value <= type(int128).max, \"SafeCast: value doesn't fit in 128 bits\");\n        return int128(value);\n    }\n\n    /**\n     * @dev Returns the downcasted int64 from int256, reverting on\n     * overflow (when the input is less than smallest int64 or\n     * greater than largest int64).\n     *\n     * Counterpart to Solidity's `int64` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 64 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt64(int256 value) internal pure returns (int64) {\n        require(value >= type(int64).min && value <= type(int64).max, \"SafeCast: value doesn't fit in 64 bits\");\n        return int64(value);\n    }\n\n    /**\n     * @dev Returns the downcasted int32 from int256, reverting on\n     * overflow (when the input is less than smallest int32 or\n     * greater than largest int32).\n     *\n     * Counterpart to Solidity's `int32` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 32 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt32(int256 value) internal pure returns (int32) {\n        require(value >= type(int32).min && value <= type(int32).max, \"SafeCast: value doesn't fit in 32 bits\");\n        return int32(value);\n    }\n\n    /**\n     * @dev Returns the downcasted int16 from int256, reverting on\n     * overflow (when the input is less than smallest int16 or\n     * greater than largest int16).\n     *\n     * Counterpart to Solidity's `int16` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 16 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt16(int256 value) internal pure returns (int16) {\n        require(value >= type(int16).min && value <= type(int16).max, \"SafeCast: value doesn't fit in 16 bits\");\n        return int16(value);\n    }\n\n    /**\n     * @dev Returns the downcasted int8 from int256, reverting on\n     * overflow (when the input is less than smallest int8 or\n     * greater than largest int8).\n     *\n     * Counterpart to Solidity's `int8` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 8 bits.\n     *\n     * _Available since v3.1._\n     */\n    function toInt8(int256 value) internal pure returns (int8) {\n        require(value >= type(int8).min && value <= type(int8).max, \"SafeCast: value doesn't fit in 8 bits\");\n        return int8(value);\n    }\n\n    /**\n     * @dev Converts an unsigned uint256 into a signed int256.\n     *\n     * Requirements:\n     *\n     * - input must be less than or equal to maxInt256.\n     */\n    function toInt256(uint256 value) internal pure returns (int256) {\n        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive\n        require(value <= uint256(type(int256).max), \"SafeCast: value doesn't fit in an int256\");\n        return int256(value);\n    }\n}\n"},{"file_path":"@openzeppelin/contracts/utils/structs/EnumerableSet.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Library for managing\n * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive\n * types.\n *\n * Sets have the following properties:\n *\n * - Elements are added, removed, and checked for existence in constant time\n * (O(1)).\n * - Elements are enumerated in O(n). No guarantees are made on the ordering.\n *\n * ```\n * contract Example {\n *     // Add the library methods\n *     using EnumerableSet for EnumerableSet.AddressSet;\n *\n *     // Declare a set state variable\n *     EnumerableSet.AddressSet private mySet;\n * }\n * ```\n *\n * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)\n * and `uint256` (`UintSet`) are supported.\n */\nlibrary EnumerableSet {\n    // To implement this library for multiple types with as little code\n    // repetition as possible, we write it in terms of a generic Set type with\n    // bytes32 values.\n    // The Set implementation uses private functions, and user-facing\n    // implementations (such as AddressSet) are just wrappers around the\n    // underlying Set.\n    // This means that we can only create new EnumerableSets for types that fit\n    // in bytes32.\n\n    struct Set {\n        // Storage of set values\n        bytes32[] _values;\n        // Position of the value in the `values` array, plus 1 because index 0\n        // means a value is not in the set.\n        mapping(bytes32 => uint256) _indexes;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function _add(Set storage set, bytes32 value) private returns (bool) {\n        if (!_contains(set, value)) {\n            set._values.push(value);\n            // The value is stored at length-1, but we add 1 to all indexes\n            // and use 0 as a sentinel value\n            set._indexes[value] = set._values.length;\n            return true;\n        } else {\n            return false;\n        }\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function _remove(Set storage set, bytes32 value) private returns (bool) {\n        // We read and store the value's index to prevent multiple reads from the same storage slot\n        uint256 valueIndex = set._indexes[value];\n\n        if (valueIndex != 0) {\n            // Equivalent to contains(set, value)\n            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in\n            // the array, and then remove the last element (sometimes called as 'swap and pop').\n            // This modifies the order of the array, as noted in {at}.\n\n            uint256 toDeleteIndex = valueIndex - 1;\n            uint256 lastIndex = set._values.length - 1;\n\n            if (lastIndex != toDeleteIndex) {\n                bytes32 lastvalue = set._values[lastIndex];\n\n                // Move the last value to the index where the value to delete is\n                set._values[toDeleteIndex] = lastvalue;\n                // Update the index for the moved value\n                set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex\n            }\n\n            // Delete the slot where the moved value was stored\n            set._values.pop();\n\n            // Delete the index for the deleted slot\n            delete set._indexes[value];\n\n            return true;\n        } else {\n            return false;\n        }\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function _contains(Set storage set, bytes32 value) private view returns (bool) {\n        return set._indexes[value] != 0;\n    }\n\n    /**\n     * @dev Returns the number of values on the set. O(1).\n     */\n    function _length(Set storage set) private view returns (uint256) {\n        return set._values.length;\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function _at(Set storage set, uint256 index) private view returns (bytes32) {\n        return set._values[index];\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function _values(Set storage set) private view returns (bytes32[] memory) {\n        return set._values;\n    }\n\n    // Bytes32Set\n\n    struct Bytes32Set {\n        Set _inner;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {\n        return _add(set._inner, value);\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {\n        return _remove(set._inner, value);\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {\n        return _contains(set._inner, value);\n    }\n\n    /**\n     * @dev Returns the number of values in the set. O(1).\n     */\n    function length(Bytes32Set storage set) internal view returns (uint256) {\n        return _length(set._inner);\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {\n        return _at(set._inner, index);\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {\n        return _values(set._inner);\n    }\n\n    // AddressSet\n\n    struct AddressSet {\n        Set _inner;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function add(AddressSet storage set, address value) internal returns (bool) {\n        return _add(set._inner, bytes32(uint256(uint160(value))));\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function remove(AddressSet storage set, address value) internal returns (bool) {\n        return _remove(set._inner, bytes32(uint256(uint160(value))));\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function contains(AddressSet storage set, address value) internal view returns (bool) {\n        return _contains(set._inner, bytes32(uint256(uint160(value))));\n    }\n\n    /**\n     * @dev Returns the number of values in the set. O(1).\n     */\n    function length(AddressSet storage set) internal view returns (uint256) {\n        return _length(set._inner);\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function at(AddressSet storage set, uint256 index) internal view returns (address) {\n        return address(uint160(uint256(_at(set._inner, index))));\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function values(AddressSet storage set) internal view returns (address[] memory) {\n        bytes32[] memory store = _values(set._inner);\n        address[] memory result;\n\n        assembly {\n            result := store\n        }\n\n        return result;\n    }\n\n    // UintSet\n\n    struct UintSet {\n        Set _inner;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function add(UintSet storage set, uint256 value) internal returns (bool) {\n        return _add(set._inner, bytes32(value));\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function remove(UintSet storage set, uint256 value) internal returns (bool) {\n        return _remove(set._inner, bytes32(value));\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function contains(UintSet storage set, uint256 value) internal view returns (bool) {\n        return _contains(set._inner, bytes32(value));\n    }\n\n    /**\n     * @dev Returns the number of values on the set. O(1).\n     */\n    function length(UintSet storage set) internal view returns (uint256) {\n        return _length(set._inner);\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function at(UintSet storage set, uint256 index) internal view returns (uint256) {\n        return uint256(_at(set._inner, index));\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function values(UintSet storage set) internal view returns (uint256[] memory) {\n        bytes32[] memory store = _values(set._inner);\n        uint256[] memory result;\n\n        assembly {\n            result := store\n        }\n\n        return result;\n    }\n}\n"},{"file_path":"contracts/interfaces/IBeamToken.sol","source_code":"// SPDX-License-Identifier: MIT\npragma solidity 0.8.6;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\n\ninterface IBeamToken is IERC20, IERC20Permit {\n    function mint(address _to, uint256 _amount) external;\n    function burn(address _from, uint256 _amount) external;\n}"}],"certified":false,"conflicting_implementations":null,"abi":[{"inputs":[{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"delegator","type":"address"},{"indexed":true,"internalType":"address","name":"fromDelegate","type":"address"},{"indexed":true,"internalType":"address","name":"toDelegate","type":"address"}],"name":"DelegateChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"delegate","type":"address"},{"indexed":false,"internalType":"uint256","name":"previousBalance","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newBalance","type":"uint256"}],"name":"DelegateVotesChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"BURNER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MINTER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint32","name":"pos","type":"uint32"}],"name":"checkpoints","outputs":[{"components":[{"internalType":"uint32","name":"fromBlock","type":"uint32"},{"internalType":"uint224","name":"votes","type":"uint224"}],"internalType":"struct ERC20Votes.Checkpoint","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"delegatee","type":"address"}],"name":"delegate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"delegatee","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"delegateBySig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"delegates","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"blockNumber","type":"uint256"}],"name":"getPastTotalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"blockNumber","type":"uint256"}],"name":"getPastVotes","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRoleMember","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleMemberCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"getVotes","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"numCheckpoints","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}],"is_changed_bytecode":false,"is_partially_verified":true,"constructor_args":"0000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000044265616d0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044245414d00000000000000000000000000000000000000000000000000000000"}