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- ERC-20 Tokens (164)6,614,856.96561162 CRFCrafting Fin... (CRF)$4,615.32@0.00074,086.85352971 0xMR0xMonero (0xMR)$91.59@0.02244,828.23653777 1INCH1INCH Token (1INCH)$1,862.93@0.385811.70219231 AAVEAave Token (AAVE)$2,210.19@188.870.0335 ALCXAlchemix (ALCX)$0.72@21.595 AMLTAMLT (AMLT)$0.00@0.002,921.4 AMPAmp (AMP)$14.80@0.005115,431.40317025 ANGLEANGLE (ANGLE)$352.43@0.0228859,767,341.265836 AURORAAurora (AURORA)$168,137,820.79@0.19561,322,796.69303454 BAKEDBakedToken (BAKED)$1,733.70@0.00136.46409486 BALBalancer (BAL)$16.61@2.57106,799.14651208 BEPROBetProtocolT... (BEPRO)$56.98@0.0005917.3587924 BIXBIXToken (BIX)$3.42@0.0037118,383.57021771 BSTBlocksquareT... (BST)$26,243.98@0.2217285.76589178 LINKChainLink To... (LINK)$5,015.19@17.55901,000.1 CORCOR Token (COR)$336.74@0.000470,134.2259885 CROCronos Coin (CRO)$12,035.80@0.171618.55675773 DAODAO Maker (DAO)$7.83@0.42210.01 USDDDecentralize... (USDD)$0.01@0.99871 DPIDefiPulse In... (DPI)$110.42@110.425.5030238 TSUKADejitaru Tsu... (TSUKA)$0.07@0.0125220,019.10007633 DODODODO bird (DODO)$31,662.29@0.143920,000 ELTElite Swap (ELT)$0.11@0.003,698.05654605 EURAEURA (previo... (EURA)$3,860.77@1.0445,227,428.39633435 FRAXFrax (FRAX)$5,212,619.09@0.997214,140.00331324 FXSFrax Share (FXS)$43,975.41@3.1123.5988 FTX TokenFTT (FTX To...)$52.63@2.23314.20116381 GTCGitcoin (GTC)$275.68@0.8774456.30806088 GRTGraph Token (GRT)$109.47@0.23992.05393049 HBTCHuobi BTC (HBTC)$8,537.63@4,156.73771.94027782 HTHuobiToken (HT)$426.47@0.55250.05 INVInverse DAO (INV)$1.69@33.75100,000 KEYKEY (KEY)20 LONLON Token (LON)$17.48@0.87423,574,738.89265172 MODAmoda (MODA)$646,294.92@0.18081,000 MTVMultiVAC (MTV)$1.06@0.001125,143,818.6178181 PADNearPAD Toke... (PAD)$288,504.20@0.011527,723,680.8540319 OCTOctopus Netw... (OCT)$3,957,499.99@0.142740.702704 omUSDOpenMoney US... 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(USTC)$322.50@0.02370.00497799 YFIyearn.financ... (YFI)$35.55@7,141.2922,626.72991388 BATBAT (BAT)$6,320.10@0.2793209.49634618 BUSDBUSD (BUSD)$209.11@0.998235.74658708 COMPCompound (COMP)$2,383.22@66.672,109,364.60452257 DAIDai Stableco... (DAI)$2,108,999.68@0.99982.01 GUSDGemini dolla... (GUSD)$2.01@1.000.14523582 MKRMaker (MKR)$254.33@1,751.1645 MATICMatic Token (MATIC)$23.79@0.5287634.09000102 NEARNEAR (NEAR)$4,146.95@6.541,110 SNTStatusNetwor... (SNT)$45.67@0.041110,828,686.689081 USDTTether USD (USDT)$10,825,990.35@0.9998509.67 TUSDTrueUSD (TUSD)$510.18@1.00136,539,573.994216 USDCUSDC (USDC)$36,538,514.35@1.0049.74335852 WBTCWrapped BTC (WBTC)$4,605,936.54@92,594.0032.53629585 WETHWrapped Ethe... (WETH)$111,022.13@3,412.25474,000 Earn $UNI airdrops at https://www.uniswaplabs.com# uniswaplab... (Earn $...)10,000 $ Evmosia.com$ Evmosia.c... ($ Evm...)80,000 Earn $BAT rewards at https://brave.farm$ BRAVE (Earn $...)48,000 Earn $TUSD airdrops at https://www.tenorusd.org$ tenorusd.o... (Earn $...)4.75ERC20 ***665,723.50594091 1MIL1MILNFT$28,031.27@0.04217 ADADreward$0.00@0.00120,000 ANFDAngry Doge1,000,000,000,000 ANSANS.BEST - k... (ANS)1.1 ARTArt Arium (ART)895.75007908 BACONBaconCoin4,965,779,265.36404 BSTNBastion2,000,000,000 BASTBastion (BAST)1,736.71183051 BGBGBigMouthFrog2 BITVBITV2008 (BITV)100.00585676 BlueSparrowBlueSparrowToken$3.04@0.03043.63757158 COLONColon$0.00@0.000910,000 DLTAdelta.theta$20.81@0.002125,595 DSGNDesign (DSGN)17.67315667 DOGDog (DOG)7 DOOMDoom (DOOM)50,000,000 ENDEndemic (END)7.1 ENPEnpower (ENP)150,000,000 EVMOSEVMOS (EVMOS)1,051,000,000 FAMEFAME236,483,125.168833 NFDFeisty Doge NFT$83,864.01@0.00046,000 FTTv2.ioFTTv2.io (FTTv2....)5,000,000 GWJGREATWANGJIN... (GWJ)516.737993 HOMEHome10 LTSLights (LTS)200,000,000 LNRLNR (LNR)16,485,654.3916233 MNFTMANUFACTORY (MNFT)44,730,116.7741944 mTSUKASAMIKASA TSUKA... (mTSUKA...)4,287,659.76 MOTIONMotion (MOTION)2,127,314.14628502 OINoinfinance$15,543.65@0.0073564,979,999,998 OTTOOtto Token (OTTO)10,000,000 PRESENCEPresence DAO (PRESEN...)100 RHOCRHOC0.1 RHTNRhodes Token (RHTN)746,199.08782407 rMCrMutantCoin (rMC)50,000 SANCSancoj1,800,000 SFTScorefam3.47596747 SIMPSimpson (SIMP)306,811,653.939346 SOLACEsolace0.112 HQG环球股 (HQG)8,132,362,512.90855 PLYAurigami Token$669,700.05@0.00012,410,191.03539262 XNLChronicle$21,591.50@0.00919,108.90895062 CGTCurio Governance Token1,958,889.85220355 FLXFlux Token$81,238.77@0.041557,637.56426986 HAPIHAPI$704,331.04@12.22666,732.59064025 KSWKillSwitchToken200 MRCHMerchDAO$0.87@0.0044110 SLDShieldEX200 SPACESpacelens$0.59@0.00310,018,722.3287535 UMINTYouMinter1.2 TokenERC-20 TOKEN*[Suspicious]30 TokenERC-20 TOKEN*[Suspicious]2,382.23 TokenERC-20 TOKEN*[Suspicious]1.5 TokenERC-20 TOKEN*[Suspicious]3,999.99 TokenERC-20 TOKEN*[Suspicious]8,271 TokenERC-20 TOKEN*[Suspicious]3,999.99 TokenERC-20 TOKEN*[Suspicious]0.7 TokenERC-20 TOKEN*[Suspicious]3,894 TokenERC-20 TOKEN*[Suspicious]9,000 TokenERC-20 TOKEN*[Suspicious]500 TokenERC-20 TOKEN*[Suspicious]400 TokenERC-20 TOKEN*[Suspicious]400 TokenERC-20 TOKEN*[Suspicious]100,000 TokenERC-20 TOKEN*[Suspicious]4,214 TokenERC-20 TOKEN*[Suspicious]7,000 TokenERC-20 TOKEN*[Suspicious]7,000 TokenERC-20 TOKEN*[Suspicious]3,894 TokenERC-20 TOKEN*[Suspicious]1,788,150.28159491 TokenERC-20 TOKEN*[Suspicious]350 TokenERC-20 TOKEN*[Suspicious]777 TokenERC-20 TOKEN*[Suspicious]302,416.88137013 TokenERC-20 TOKEN*[Suspicious]636 TokenERC-20 TOKEN*[Unsafe]7,000 TokenERC-20 TOKEN*[Unsafe]7,000 TokenERC-20 TOKEN*[Unsafe]30 TokenERC-20 TOKEN*[Spam]132.84 TokenERC-20 TOKEN*[Spam]245.44 TokenERC-20 TOKEN*[Spam]93,588.75 TokenERC-20 TOKEN*[Spam]7,000 TokenERC-20 TOKEN*[Spam]50,000 TokenERC-20 TOKEN*[Spam]150 TokenERC-20 TOKEN*[Spam]707,090 TokenERC-20 TOKEN*[Spam]50,000 TokenERC-20 TOKEN*[Spam]NFT Tokens (62)aave-token.netAave Mysterybox NFTERC-1155claim rewards on apylink.comapylink.comERC-1155claim rewards on apyusd.netapyusd.netERC-1155nft-dai.comDAI Mysterybox NFTERC-1155claim rewards on fraxprotocol.comfraxprotocol.comERC-1155claim rewards on graphtoken.orggraphtoken.orgERC-1155Nft Mint Club Pass OriginalNft Mint Club Pass OriginalERC-1155Reward Club [QEfkfA1G]Reward Club [w7cIVAag]ERC-1155claim rewards on snxtoken.comsnxtoken.comERC-1155claim rewards on univ4labs.orguniv4labs.orgERC-1155NWBTCwbtc-nft.org or OS/collection/nwbtc to Redeem and Swap your NFT for WBTCERC-1155claim rewards on wbtcnetwork.netwbtcnetwork.netERC-1155debridgeth.comWithdrawal Badge debridgeth.comERC-1155debridgeth.comWithdrawal Badge debridgeth.comERC-1155nft-woo.comWOO Mysterybox NFTERC-1155claim rewards on woonetwork.netwoonetwork.netERC-1155Let's Go!🎁ERC-1155ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Suspicious]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]ERC-1155 TOKEN*[Spam]
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3 addresses found via- Transactions
- Internal Transactions
- Token Transfers (ERC-20)
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Transaction Hash MethodBlockFromTo0xdf6394c8b4cf33d055dc7a8f0008fe963518c48b1a7491b619a7676ed2ae817c Unlock Token (pending) 2024-11-08 7:04:19 18 days ago 1731049459 IN 0 ETH$0.00 (Pending) (Pending) Unlock Token 21275284 2024-11-26 23:42:59 4 hrs ago 1732664579 IN 0 ETH$0.00 0.00278638 8.15157589 Lock Token 21275284 2024-11-26 23:42:59 4 hrs ago 1732664579 IN 0 ETH$0.00 0.00060532 10.2512478 Lock Token 21275167 2024-11-26 23:19:35 5 hrs ago 1732663175 IN 0 ETH$0.00 0.00048432 9.67930696 Unlock Token 21275151 2024-11-26 23:16:23 5 hrs ago 1732662983 IN 0 ETH$0.00 0.00217621 6.409128 Lock Token 21275146 2024-11-26 23:15:23 5 hrs ago 1732662923 IN 0 ETH$0.00 0.00049497 9.57098755 Lock Token 21275107 2024-11-26 23:07:35 5 hrs ago 1732662455 IN 0 ETH$0.00 0.00040897 8.05137574 Lock Token 21275099 2024-11-26 23:05:47 5 hrs ago 1732662347 IN 0 ETH$0.00 0.00039179 7.69683614 Lock Token 21274843 2024-11-26 22:14:35 6 hrs ago 1732659275 IN 0 ETH$0.00 0.00052043 10.24315837 Unlock Token 21274839 2024-11-26 22:13:47 6 hrs ago 1732659227 IN 0 ETH$0.00 0.00341173 10.14763939 Unlock Token 21274835 2024-11-26 22:12:59 6 hrs ago 1732659179 IN 0 ETH$0.00 0.00391253 11 Unlock Token 21274610 2024-11-26 21:27:59 6 hrs ago 1732656479 IN 0 ETH$0.00 0.00334362 10.13499368 Unlock Token 21274459 2024-11-26 20:57:23 7 hrs ago 1732654643 IN 0 ETH$0.00 0.00378698 10.97367107 Unlock Token 21274122 2024-11-26 19:49:59 8 hrs ago 1732650599 IN 0 ETH$0.00 0.00447123 13.11666409 Unlock Token 21273701 2024-11-26 18:25:11 10 hrs ago 1732645511 IN 0 ETH$0.00 0.00487389 14.16421836 Unlock Token 21273576 2024-11-26 18:00:11 10 hrs ago 1732644011 IN 0 ETH$0.00 0.00458436 13.12932913 Lock Token 21272243 2024-11-26 13:32:59 14 hrs ago 1732627979 IN 0 ETH$0.00 0.00106529 20.96714147 Unlock Token 21271194 2024-11-26 10:01:47 18 hrs ago 1732615307 IN 0 ETH$0.00 0.00273629 8.24499483 Unlock Token 21271194 2024-11-26 10:01:47 18 hrs ago 1732615307 IN 0 ETH$0.00 0.00274564 8.24499483 Unlock Token 21270191 2024-11-26 6:39:35 21 hrs ago 1732603175 IN 0 ETH$0.00 0.00220286 6.15822031 Unlock Token 21270176 2024-11-26 6:36:35 21 hrs ago 1732602995 IN 0 ETH$0.00 0.0020102 6.04994389 Unlock Token 21269794 2024-11-26 5:20:11 23 hrs ago 1732598411 IN 0 ETH$0.00 0.00288631 8.77233247 Lock Token 21269578 2024-11-26 4:36:35 23 hrs ago 1732595795 IN 0 ETH$0.00 0.00044168 6.96976391 Unlock Token 21269328 2024-11-26 3:46:35 24 hrs ago 1732592795 IN 0 ETH$0.00 0.00244564 6.9997113 Unlock Token 21269218 2024-11-26 3:24:23 25 hrs ago 1732591463 IN 0 ETH$0.00 0.00250436 7.30910159 Loading...LoadingThis contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.Contract Name:ERC20Locker
Compiler Versionv0.6.12+commit.27d51765
Contract Source Code (Solidity)
- interface IERC20
- - function totalSupply()
- - function balanceOf(address account)
- - function transfer(address recipient, ...
- - function allowance(address owner, add ...
- - function approve(address spender, uin ...
- - function transferFrom(address sender, ...
- library SafeMath
- - function tryAdd(uint256 a, uint256 b)
- - function trySub(uint256 a, uint256 b)
- - function tryMul(uint256 a, uint256 b)
- - function tryDiv(uint256 a, uint256 b)
- - function tryMod(uint256 a, uint256 b)
- - function add(uint256 a, uint256 b)
- - function sub(uint256 a, uint256 b)
- - function mul(uint256 a, uint256 b)
- - function div(uint256 a, uint256 b)
- - function mod(uint256 a, uint256 b)
- - function sub(uint256 a, uint256 b, st ...
- - function div(uint256 a, uint256 b, st ...
- - function mod(uint256 a, uint256 b, st ...
- library Address
- - function isContract(address account)
- - function sendValue(address payable re ...
- - function functionCall(address target, ...
- - function functionCall(address target, ...
- - function functionCallWithValue(addres ...
- - function functionCallWithValue(addres ...
- - function functionStaticCall(address t ...
- - function functionStaticCall(address t ...
- - function functionDelegateCall(address ...
- - function functionDelegateCall(address ...
- - function _verifyCallResult(bool succe ...
- library SafeERC20
- - function safeTransfer(IERC20 token, a ...
- - function safeTransferFrom(IERC20 toke ...
- - function safeApprove(IERC20 token, ad ...
- - function safeIncreaseAllowance(IERC20 ...
- - function safeDecreaseAllowance(IERC20 ...
- - function _callOptionalReturn(IERC20 t ...
- contract AdminControlled
- - function adminPause(uint flags)
- - function adminSstore(uint key, uint v ...
- - function adminSendEth(address payable ...
- - function adminReceiveEth()
- - function adminDelegatecall(address ta ...
- library Borsh
- - function from(bytes memory data)
- - function finished(Data memory data)
- - function peekKeccak256(Data memory da ...
- - function bytesKeccak256(
- - function peekSha256(Data memory data, ...
- - function bytesSha256(
- - function decodeU8(Data memory data)
- - function decodeI8(Data memory data)
- - function decodeU16(Data memory data)
- - function decodeI16(Data memory data)
- - function decodeU32(Data memory data)
- - function decodeI32(Data memory data)
- - function decodeU64(Data memory data)
- - function decodeI64(Data memory data)
- - function decodeU128(Data memory data)
- - function decodeI128(Data memory data)
- - function decodeU256(Data memory data)
- - function decodeI256(Data memory data)
- - function decodeBool(Data memory data)
- - function decodeBytes(Data memory data ...
- - function decodeBytes32(Data memory da ...
- - function decodeBytes20(Data memory da ...
- - function decodeSECP256K1PublicKey(Bor ...
- - function decodeED25519PublicKey(Borsh ...
- - function decodeSECP256K1Signature(Bor ...
- - function decodeED25519Signature(Borsh ...
- library NearDecoder
- - function decodePublicKey(Borsh.Data m ...
- - function decodeValidatorStake(Borsh.D ...
- - function decodeOptionalValidatorStake ...
- - function decodeSignature(Borsh.Data m ...
- - function decodeOptionalSignature(Bors ...
- - function decodeInitialValidators(Bors ...
- - function decodeLightClientBlock(Borsh ...
- - function decodeBlockHeaderInnerLite(B ...
- library ProofDecoder
- - function decodeFullOutcomeProof(Borsh ...
- - function decodeBlockHeaderLight(Borsh ...
- - function decodeExecutionStatus(Borsh. ...
- - function decodeExecutionOutcome(Borsh ...
- - function decodeExecutionOutcomeWithId ...
- - function decodeMerklePathItem(Borsh.D ...
- - function decodeMerklePath(Borsh.Data ...
- - function decodeExecutionOutcomeWithId ...
- interface INearProver
- - function proveOutcome(bytes calldata ...
- contract Locker
- - function _parseAndConsumeProof(bytes ...
- contract ERC20Locker is Locker, Ad ... *
- - function lockToken(address ethToken, ...
- - function unlockToken(bytes memory pro ...
- - function _decodeBurnResult(bytes memo ...
- - function tokenFallback(address _from, ...
- - function adminTransfer(IERC20 token, ...
/** *Submitted for verification at Etherscan.io on 2021-04-28 */ // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/math/SafeMath.sol pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/utils/Address.sol pragma solidity >=0.6.2 <0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol pragma solidity >=0.6.0 <0.8.0; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: rainbow-bridge/contracts/eth/nearbridge/contracts/AdminControlled.sol pragma solidity ^0.6; contract AdminControlled { address public admin; uint public paused; constructor(address _admin, uint flags) public { admin = _admin; // Add the possibility to set pause flags on the initialization paused = flags; } modifier onlyAdmin { require(msg.sender == admin); _; } modifier pausable(uint flag) { require((paused & flag) == 0 || msg.sender == admin); _; } function adminPause(uint flags) public onlyAdmin { paused = flags; } function adminSstore(uint key, uint value) public onlyAdmin { assembly { sstore(key, value) } } function adminSendEth(address payable destination, uint amount) public onlyAdmin { destination.transfer(amount); } function adminReceiveEth() public payable onlyAdmin {} function adminDelegatecall(address target, bytes memory data) public payable onlyAdmin returns (bytes memory) { (bool success, bytes memory rdata) = target.delegatecall(data); require(success); return rdata; } } // File: rainbow-bridge/contracts/eth/nearbridge/contracts/Borsh.sol pragma solidity ^0.6; library Borsh { using SafeMath for uint256; struct Data { uint256 offset; bytes raw; } function from(bytes memory data) internal pure returns (Data memory) { return Data({offset: 0, raw: data}); } modifier shift(Data memory data, uint256 size) { require(data.raw.length >= data.offset + size, "Borsh: Out of range"); _; data.offset += size; } function finished(Data memory data) internal pure returns (bool) { return data.offset == data.raw.length; } function peekKeccak256(Data memory data, uint256 length) internal pure returns (bytes32 res) { return bytesKeccak256(data.raw, data.offset, length); } function bytesKeccak256( bytes memory ptr, uint256 offset, uint256 length ) internal pure returns (bytes32 res) { // solium-disable-next-line security/no-inline-assembly assembly { res := keccak256(add(add(ptr, 32), offset), length) } } function peekSha256(Data memory data, uint256 length) internal view returns (bytes32) { return bytesSha256(data.raw, data.offset, length); } function bytesSha256( bytes memory ptr, uint256 offset, uint256 length ) internal view returns (bytes32) { bytes32[1] memory result; // solium-disable-next-line security/no-inline-assembly assembly { pop(staticcall(gas(), 0x02, add(add(ptr, 32), offset), length, result, 32)) } return result[0]; } function decodeU8(Data memory data) internal pure shift(data, 1) returns (uint8 value) { value = uint8(data.raw[data.offset]); } function decodeI8(Data memory data) internal pure shift(data, 1) returns (int8 value) { value = int8(data.raw[data.offset]); } function decodeU16(Data memory data) internal pure returns (uint16 value) { value = uint16(decodeU8(data)); value |= (uint16(decodeU8(data)) << 8); } function decodeI16(Data memory data) internal pure returns (int16 value) { value = int16(decodeI8(data)); value |= (int16(decodeI8(data)) << 8); } function decodeU32(Data memory data) internal pure returns (uint32 value) { value = uint32(decodeU16(data)); value |= (uint32(decodeU16(data)) << 16); } function decodeI32(Data memory data) internal pure returns (int32 value) { value = int32(decodeI16(data)); value |= (int32(decodeI16(data)) << 16); } function decodeU64(Data memory data) internal pure returns (uint64 value) { value = uint64(decodeU32(data)); value |= (uint64(decodeU32(data)) << 32); } function decodeI64(Data memory data) internal pure returns (int64 value) { value = int64(decodeI32(data)); value |= (int64(decodeI32(data)) << 32); } function decodeU128(Data memory data) internal pure returns (uint128 value) { value = uint128(decodeU64(data)); value |= (uint128(decodeU64(data)) << 64); } function decodeI128(Data memory data) internal pure returns (int128 value) { value = int128(decodeI64(data)); value |= (int128(decodeI64(data)) << 64); } function decodeU256(Data memory data) internal pure returns (uint256 value) { value = uint256(decodeU128(data)); value |= (uint256(decodeU128(data)) << 128); } function decodeI256(Data memory data) internal pure returns (int256 value) { value = int256(decodeI128(data)); value |= (int256(decodeI128(data)) << 128); } function decodeBool(Data memory data) internal pure returns (bool value) { value = (decodeU8(data) != 0); } function decodeBytes(Data memory data) internal pure returns (bytes memory value) { value = new bytes(decodeU32(data)); for (uint i = 0; i < value.length; i++) { value[i] = byte(decodeU8(data)); } } function decodeBytes32(Data memory data) internal pure shift(data, 32) returns (bytes32 value) { bytes memory raw = data.raw; uint256 offset = data.offset; // solium-disable-next-line security/no-inline-assembly assembly { value := mload(add(add(raw, 32), offset)) } } function decodeBytes20(Data memory data) internal pure returns (bytes20 value) { for (uint i = 0; i < 20; i++) { value |= bytes20(byte(decodeU8(data)) & 0xFF) >> (i * 8); } } // Public key struct SECP256K1PublicKey { uint256 x; uint256 y; } function decodeSECP256K1PublicKey(Borsh.Data memory data) internal pure returns (SECP256K1PublicKey memory key) { key.x = decodeU256(data); key.y = decodeU256(data); } struct ED25519PublicKey { bytes32 xy; } function decodeED25519PublicKey(Borsh.Data memory data) internal pure returns (ED25519PublicKey memory key) { key.xy = decodeBytes32(data); } // Signature struct SECP256K1Signature { bytes32 r; bytes32 s; uint8 v; } function decodeSECP256K1Signature(Borsh.Data memory data) internal pure returns (SECP256K1Signature memory sig) { sig.r = decodeBytes32(data); sig.s = decodeBytes32(data); sig.v = decodeU8(data); } struct ED25519Signature { bytes32[2] rs; } function decodeED25519Signature(Borsh.Data memory data) internal pure returns (ED25519Signature memory sig) { sig.rs[0] = decodeBytes32(data); sig.rs[1] = decodeBytes32(data); } } // File: rainbow-bridge/contracts/eth/nearbridge/contracts/NearDecoder.sol pragma solidity ^0.6; library NearDecoder { using Borsh for Borsh.Data; using NearDecoder for Borsh.Data; struct PublicKey { uint8 enumIndex; Borsh.ED25519PublicKey ed25519; Borsh.SECP256K1PublicKey secp256k1; } function decodePublicKey(Borsh.Data memory data) internal pure returns (PublicKey memory key) { key.enumIndex = data.decodeU8(); if (key.enumIndex == 0) { key.ed25519 = data.decodeED25519PublicKey(); } else if (key.enumIndex == 1) { key.secp256k1 = data.decodeSECP256K1PublicKey(); } else { revert("NearBridge: Only ED25519 and SECP256K1 public keys are supported"); } } struct ValidatorStake { string account_id; PublicKey public_key; uint128 stake; } function decodeValidatorStake(Borsh.Data memory data) internal pure returns (ValidatorStake memory validatorStake) { validatorStake.account_id = string(data.decodeBytes()); validatorStake.public_key = data.decodePublicKey(); validatorStake.stake = data.decodeU128(); } struct OptionalValidatorStakes { bool none; ValidatorStake[] validatorStakes; bytes32 hash; // Additional computable element } function decodeOptionalValidatorStakes(Borsh.Data memory data) internal view returns (OptionalValidatorStakes memory stakes) { stakes.none = (data.decodeU8() == 0); if (!stakes.none) { uint256 start = data.offset; stakes.validatorStakes = new ValidatorStake[](data.decodeU32()); for (uint i = 0; i < stakes.validatorStakes.length; i++) { stakes.validatorStakes[i] = data.decodeValidatorStake(); } uint256 stop = data.offset; data.offset = start; stakes.hash = data.peekSha256(stop - start); data.offset = stop; } } struct Signature { uint8 enumIndex; Borsh.ED25519Signature ed25519; Borsh.SECP256K1Signature secp256k1; } function decodeSignature(Borsh.Data memory data) internal pure returns (Signature memory sig) { sig.enumIndex = data.decodeU8(); if (sig.enumIndex == 0) { sig.ed25519 = data.decodeED25519Signature(); } else if (sig.enumIndex == 1) { sig.secp256k1 = data.decodeSECP256K1Signature(); } else { revert("NearBridge: Only ED25519 and SECP256K1 signatures are supported"); } } struct OptionalSignature { bool none; Signature signature; } function decodeOptionalSignature(Borsh.Data memory data) internal pure returns (OptionalSignature memory sig) { sig.none = (data.decodeU8() == 0); if (!sig.none) { sig.signature = data.decodeSignature(); } } struct LightClientBlock { bytes32 prev_block_hash; bytes32 next_block_inner_hash; BlockHeaderInnerLite inner_lite; bytes32 inner_rest_hash; OptionalValidatorStakes next_bps; OptionalSignature[] approvals_after_next; bytes32 hash; bytes32 next_hash; } struct InitialValidators { ValidatorStake[] validator_stakes; } function decodeInitialValidators(Borsh.Data memory data) internal view returns (InitialValidators memory validators) { validators.validator_stakes = new ValidatorStake[](data.decodeU32()); for (uint i = 0; i < validators.validator_stakes.length; i++) { validators.validator_stakes[i] = data.decodeValidatorStake(); } } function decodeLightClientBlock(Borsh.Data memory data) internal view returns (LightClientBlock memory header) { header.prev_block_hash = data.decodeBytes32(); header.next_block_inner_hash = data.decodeBytes32(); header.inner_lite = data.decodeBlockHeaderInnerLite(); header.inner_rest_hash = data.decodeBytes32(); header.next_bps = data.decodeOptionalValidatorStakes(); header.approvals_after_next = new OptionalSignature[](data.decodeU32()); for (uint i = 0; i < header.approvals_after_next.length; i++) { header.approvals_after_next[i] = data.decodeOptionalSignature(); } header.hash = sha256( abi.encodePacked( sha256(abi.encodePacked(header.inner_lite.hash, header.inner_rest_hash)), header.prev_block_hash ) ); header.next_hash = sha256(abi.encodePacked(header.next_block_inner_hash, header.hash)); } struct BlockHeaderInnerLite { uint64 height; /// Height of this block since the genesis block (height 0). bytes32 epoch_id; /// Epoch start hash of this block's epoch. Used for retrieving validator information bytes32 next_epoch_id; bytes32 prev_state_root; /// Root hash of the state at the previous block. bytes32 outcome_root; /// Root of the outcomes of transactions and receipts. uint64 timestamp; /// Timestamp at which the block was built. bytes32 next_bp_hash; /// Hash of the next epoch block producers set bytes32 block_merkle_root; bytes32 hash; // Additional computable element } function decodeBlockHeaderInnerLite(Borsh.Data memory data) internal view returns (BlockHeaderInnerLite memory header) { header.hash = data.peekSha256(208); header.height = data.decodeU64(); header.epoch_id = data.decodeBytes32(); header.next_epoch_id = data.decodeBytes32(); header.prev_state_root = data.decodeBytes32(); header.outcome_root = data.decodeBytes32(); header.timestamp = data.decodeU64(); header.next_bp_hash = data.decodeBytes32(); header.block_merkle_root = data.decodeBytes32(); } } // File: rainbow-bridge/contracts/eth/nearprover/contracts/ProofDecoder.sol pragma solidity ^0.6; library ProofDecoder { using Borsh for Borsh.Data; using ProofDecoder for Borsh.Data; using NearDecoder for Borsh.Data; struct FullOutcomeProof { ExecutionOutcomeWithIdAndProof outcome_proof; MerklePath outcome_root_proof; // TODO: now empty array BlockHeaderLight block_header_lite; MerklePath block_proof; } function decodeFullOutcomeProof(Borsh.Data memory data) internal view returns (FullOutcomeProof memory proof) { proof.outcome_proof = data.decodeExecutionOutcomeWithIdAndProof(); proof.outcome_root_proof = data.decodeMerklePath(); proof.block_header_lite = data.decodeBlockHeaderLight(); proof.block_proof = data.decodeMerklePath(); } struct BlockHeaderLight { bytes32 prev_block_hash; bytes32 inner_rest_hash; NearDecoder.BlockHeaderInnerLite inner_lite; bytes32 hash; // Computable } function decodeBlockHeaderLight(Borsh.Data memory data) internal view returns (BlockHeaderLight memory header) { header.prev_block_hash = data.decodeBytes32(); header.inner_rest_hash = data.decodeBytes32(); header.inner_lite = data.decodeBlockHeaderInnerLite(); header.hash = sha256( abi.encodePacked( sha256(abi.encodePacked(header.inner_lite.hash, header.inner_rest_hash)), header.prev_block_hash ) ); } struct ExecutionStatus { uint8 enumIndex; bool unknown; bool failed; bytes successValue; /// The final action succeeded and returned some value or an empty vec. bytes32 successReceiptId; /// The final action of the receipt returned a promise or the signed /// transaction was converted to a receipt. Contains the receipt_id of the generated receipt. } function decodeExecutionStatus(Borsh.Data memory data) internal pure returns (ExecutionStatus memory executionStatus) { executionStatus.enumIndex = data.decodeU8(); if (executionStatus.enumIndex == 0) { executionStatus.unknown = true; } else if (executionStatus.enumIndex == 1) { //revert("NearDecoder: decodeExecutionStatus failure case not implemented yet"); // Can avoid revert since ExecutionStatus is latest field in all parent structures executionStatus.failed = true; } else if (executionStatus.enumIndex == 2) { executionStatus.successValue = data.decodeBytes(); } else if (executionStatus.enumIndex == 3) { executionStatus.successReceiptId = data.decodeBytes32(); } else { revert("NearDecoder: decodeExecutionStatus index out of range"); } } struct ExecutionOutcome { bytes[] logs; /// Logs from this transaction or receipt. bytes32[] receipt_ids; /// Receipt IDs generated by this transaction or receipt. uint64 gas_burnt; /// The amount of the gas burnt by the given transaction or receipt. uint128 tokens_burnt; /// The total number of the tokens burnt by the given transaction or receipt. bytes executor_id; /// Hash of the transaction or receipt id that produced this outcome. ExecutionStatus status; /// Execution status. Contains the result in case of successful execution. bytes32[] merkelization_hashes; } function decodeExecutionOutcome(Borsh.Data memory data) internal view returns (ExecutionOutcome memory outcome) { outcome.logs = new bytes[](data.decodeU32()); for (uint i = 0; i < outcome.logs.length; i++) { outcome.logs[i] = data.decodeBytes(); } uint256 start = data.offset; outcome.receipt_ids = new bytes32[](data.decodeU32()); for (uint i = 0; i < outcome.receipt_ids.length; i++) { outcome.receipt_ids[i] = data.decodeBytes32(); } outcome.gas_burnt = data.decodeU64(); outcome.tokens_burnt = data.decodeU128(); outcome.executor_id = data.decodeBytes(); outcome.status = data.decodeExecutionStatus(); uint256 stop = data.offset; outcome.merkelization_hashes = new bytes32[](1 + outcome.logs.length); data.offset = start; outcome.merkelization_hashes[0] = data.peekSha256(stop - start); data.offset = stop; for (uint i = 0; i < outcome.logs.length; i++) { outcome.merkelization_hashes[i + 1] = sha256(outcome.logs[i]); } } struct ExecutionOutcomeWithId { bytes32 id; /// The transaction hash or the receipt ID. ExecutionOutcome outcome; bytes32 hash; } function decodeExecutionOutcomeWithId(Borsh.Data memory data) internal view returns (ExecutionOutcomeWithId memory outcome) { outcome.id = data.decodeBytes32(); outcome.outcome = data.decodeExecutionOutcome(); uint256 len = 1 + outcome.outcome.merkelization_hashes.length; outcome.hash = sha256( abi.encodePacked( uint8((len >> 0) & 0xFF), uint8((len >> 8) & 0xFF), uint8((len >> 16) & 0xFF), uint8((len >> 24) & 0xFF), outcome.id, outcome.outcome.merkelization_hashes ) ); } struct MerklePathItem { bytes32 hash; uint8 direction; // 0 = left, 1 = right } function decodeMerklePathItem(Borsh.Data memory data) internal pure returns (MerklePathItem memory item) { item.hash = data.decodeBytes32(); item.direction = data.decodeU8(); require(item.direction < 2, "ProofDecoder: MerklePathItem direction should be 0 or 1"); } struct MerklePath { MerklePathItem[] items; } function decodeMerklePath(Borsh.Data memory data) internal pure returns (MerklePath memory path) { path.items = new MerklePathItem[](data.decodeU32()); for (uint i = 0; i < path.items.length; i++) { path.items[i] = data.decodeMerklePathItem(); } } struct ExecutionOutcomeWithIdAndProof { MerklePath proof; bytes32 block_hash; ExecutionOutcomeWithId outcome_with_id; } function decodeExecutionOutcomeWithIdAndProof(Borsh.Data memory data) internal view returns (ExecutionOutcomeWithIdAndProof memory outcome) { outcome.proof = data.decodeMerklePath(); outcome.block_hash = data.decodeBytes32(); outcome.outcome_with_id = data.decodeExecutionOutcomeWithId(); } } // File: rainbow-bridge/contracts/eth/nearprover/contracts/INearProver.sol pragma solidity ^0.6; interface INearProver { function proveOutcome(bytes calldata proofData, uint64 blockHeight) external view returns (bool); } // File: contracts/Locker.sol pragma solidity ^0.6.12; contract Locker { using Borsh for Borsh.Data; using ProofDecoder for Borsh.Data; INearProver public prover_; bytes public nearTokenFactory_; /// Proofs from blocks that are below the acceptance height will be rejected. // If `minBlockAcceptanceHeight_` value is zero - proofs from block with any height are accepted. uint64 public minBlockAcceptanceHeight_; // OutcomeReciptId -> Used mapping(bytes32 => bool) public usedProofs_; constructor(bytes memory nearTokenFactory, INearProver prover, uint64 minBlockAcceptanceHeight) public { require(nearTokenFactory.length > 0, "Invalid Near Token Factory address"); require(address(prover) != address(0), "Invalid Near prover address"); nearTokenFactory_ = nearTokenFactory; prover_ = prover; minBlockAcceptanceHeight_ = minBlockAcceptanceHeight; } /// Parses the provided proof and consumes it if it's not already used. /// The consumed event cannot be reused for future calls. function _parseAndConsumeProof(bytes memory proofData, uint64 proofBlockHeight) internal returns (ProofDecoder.ExecutionStatus memory result) { require(proofBlockHeight >= minBlockAcceptanceHeight_, "Proof is from the ancient block"); require(prover_.proveOutcome(proofData, proofBlockHeight), "Proof should be valid"); // Unpack the proof and extract the execution outcome. Borsh.Data memory borshData = Borsh.from(proofData); ProofDecoder.FullOutcomeProof memory fullOutcomeProof = borshData.decodeFullOutcomeProof(); require(borshData.finished(), "Argument should be exact borsh serialization"); bytes32 receiptId = fullOutcomeProof.outcome_proof.outcome_with_id.outcome.receipt_ids[0]; require(!usedProofs_[receiptId], "The burn event proof cannot be reused"); usedProofs_[receiptId] = true; require(keccak256(fullOutcomeProof.outcome_proof.outcome_with_id.outcome.executor_id) == keccak256(nearTokenFactory_), "Can only unlock tokens from the linked proof producer on Near blockchain"); result = fullOutcomeProof.outcome_proof.outcome_with_id.outcome.status; require(!result.failed, "Cannot use failed execution outcome for unlocking the tokens"); require(!result.unknown, "Cannot use unknown execution outcome for unlocking the tokens"); } } // File: contracts/ERC20Locker.sol pragma solidity ^0.6.12; contract ERC20Locker is Locker, AdminControlled { using SafeMath for uint256; using SafeERC20 for IERC20; event Locked ( address indexed token, address indexed sender, uint256 amount, string accountId ); event Unlocked ( uint128 amount, address recipient ); // Function output from burning fungible token on Near side. struct BurnResult { uint128 amount; address token; address recipient; } uint constant UNPAUSED_ALL = 0; uint constant PAUSED_LOCK = 1 << 0; uint constant PAUSED_UNLOCK = 1 << 1; // ERC20Locker is linked to the bridge token factory on NEAR side. // It also links to the prover that it uses to unlock the tokens. constructor(bytes memory nearTokenFactory, INearProver prover, uint64 minBlockAcceptanceHeight, address _admin, uint pausedFlags) AdminControlled(_admin, pausedFlags) Locker(nearTokenFactory, prover, minBlockAcceptanceHeight) public { } function lockToken(address ethToken, uint256 amount, string memory accountId) public pausable (PAUSED_LOCK) { require(IERC20(ethToken).balanceOf(address(this)).add(amount) <= ((uint256(1) << 128) - 1), "Maximum tokens locked exceeded (< 2^128 - 1)"); IERC20(ethToken).safeTransferFrom(msg.sender, address(this), amount); emit Locked(address(ethToken), msg.sender, amount, accountId); } function unlockToken(bytes memory proofData, uint64 proofBlockHeight) public pausable (PAUSED_UNLOCK) { ProofDecoder.ExecutionStatus memory status = _parseAndConsumeProof(proofData, proofBlockHeight); BurnResult memory result = _decodeBurnResult(status.successValue); IERC20(result.token).safeTransfer(result.recipient, result.amount); emit Unlocked(result.amount, result.recipient); } function _decodeBurnResult(bytes memory data) internal pure returns(BurnResult memory result) { Borsh.Data memory borshData = Borsh.from(data); uint8 flag = borshData.decodeU8(); require(flag == 0, "ERR_NOT_WITHDRAW_RESULT"); result.amount = borshData.decodeU128(); bytes20 token = borshData.decodeBytes20(); result.token = address(uint160(token)); bytes20 recipient = borshData.decodeBytes20(); result.recipient = address(uint160(recipient)); } // tokenFallback implements the ContractReceiver interface from ERC223-token-standard. // This allows to support ERC223 tokens with no extra cost. // The function always passes: we don't need to make any decision and the contract always // accept token transfers transfer. function tokenFallback(address _from, uint _value, bytes memory _data) public pure {} function adminTransfer(IERC20 token, address destination, uint amount) public onlyAdmin { token.safeTransfer(destination, amount); } }
Contract Security Audit
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Contract ABI
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000051ad3f020274910065dcb421629cd2e6e5b46c40000000000000000000000000000000000000000000000000000000000000000000000000000000000000000b8e11a1ad588863379a3e523b37d8c78070c16d900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013666163746f72792e6272696467652e6e65617200000000000000000000000000
-----Decoded View---------------
Arg [0] : nearTokenFactory (bytes): 0x666163746f72792e6272696467652e6e656172
Arg [1] : prover (address): 0x051AD3F020274910065Dcb421629cd2e6E5b46c4
Arg [2] : minBlockAcceptanceHeight (uint64): 0
Arg [3] : _admin (address): 0xb8e11A1Ad588863379A3e523b37D8C78070C16D9
Arg [4] : pausedFlags (uint256): 0
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [1] : 000000000000000000000000051ad3f020274910065dcb421629cd2e6e5b46c4
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [3] : 000000000000000000000000b8e11a1ad588863379a3e523b37d8c78070c16d9
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000013
Arg [6] : 666163746f72792e6272696467652e6e65617200000000000000000000000000Deployed Bytecode Sourcemap
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Swarm Source
ipfs://6d64ebe7e8dc8585f64892cbd13c339ad76ab238b814ae2fd251f805a7149dd0
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Loading...LoadingLoading...LoadingLoading...LoadingLoading...LoadingLoading...LoadingLoading...LoadingMultichain Portfolio | 30 Chains
Chain Token Portfolio % Price Amount Value ETH 68.45% $0.195562 859,767,341.2658 $168,137,820.79 ETH 14.87% $0.999971 36,539,573.9942 $36,538,514.35 ETH 4.41% $0.999751 10,828,686.6891 $10,825,990.35 ETH 3.45% $0.91951 9,212,426.5881 $8,470,918.37 ETH 2.12% $0.997167 5,227,428.3963 $5,212,619.09 ETH 1.87% $92,594 49.7434 $4,605,936.54 ETH 1.61% $0.142748 27,723,680.854 $3,957,499.99 ETH 0.95% $0.024443 95,524,115.2042 $2,334,848.19 ETH 0.86% $0.999827 2,109,364.6045 $2,108,999.68 ETH 0.29% $12.22 57,637.5643 $704,331.04 ETH 0.27% $0.000082 8,132,362,512.9085 $669,700.05 ETH 0.26% $0.180795 3,574,738.8927 $646,294.92 ETH 0.20% $1.09 464,092.6723 $503,540.55 ETH 0.12% $0.011474 25,143,818.6178 $288,504.2 ETH 0.05% $3,412.25 32.5363 $111,022.13 ETH 0.04% $1.04 93,943.932 $97,754.34 ETH 0.03% $0.000355 236,483,125.1688 $83,864.01 ETH 0.03% $0.041472 1,958,889.8522 $81,238.77 ETH 0.02% $3.11 14,140.0033 $43,975.41 ETH 0.01% $0.143907 220,019.1001 $31,662.29 ETH 0.01% $0.256669 117,576.7031 $30,178.29 ETH 0.01% $0.042106 665,723.5059 $28,031.27 ETH 0.01% $0.221686 118,383.5702 $26,243.98 ETH <0.01% $0.008958 2,410,191.0354 $21,591.5 ETH <0.01% $0.007307 2,127,314.1463 $15,543.65 ETH <0.01% $0.171611 70,134.226 $12,035.8 ETH <0.01% $11.38 1,006.8144 $11,457.55 ETH <0.01% $4,156.73 2.0539 $8,537.63 ETH <0.01% $0.27932 22,626.7299 $6,320.1 ETH <0.01% $0.872717 6,188.6851 $5,400.97 ETH <0.01% $17.55 285.7659 $5,015.19 ETH <0.01% $0.000698 6,614,856.9656 $4,615.32 ETH <0.01% $6.54 634.09 $4,146.95 ETH <0.01% $1.04 3,698.0565 $3,860.77 ETH <0.01% $66.67 35.7466 $2,383.22 ETH <0.01% $188.87 11.7022 $2,210.19 ETH <0.01% $0.38584 4,828.2365 $1,862.93 ETH <0.01% $0.001311 1,322,796.693 $1,733.7 ETH <0.01% $0.000006 122,086,746.2722 $683.86 ETH <0.01% $1 509.67 $510.18 ETH <0.01% $1.05 438.1096 $460.45 ETH <0.01% $0.552464 771.9403 $426.47 ETH <0.01% $0.022839 15,431.4032 $352.43 ETH <0.01% $0.000374 901,000.1 $336.74 ETH <0.01% $0.023668 13,625.9324 $322.5 ETH <0.01% $0.877385 314.2012 $275.68 ETH <0.01% $1,751.16 0.1452 $254.33 ETH <0.01% $23.58 9.419 $222.1 ETH <0.01% $0.998163 209.4963 $209.11 ETH <0.01% $110.42 1 $110.42 ETH <0.01% $0.239907 456.3081 $109.47 ETH <0.01% $0.022411 4,086.8535 $91.59 ETH <0.01% $0.000534 106,799.1465 $56.98 ETH <0.01% $2.23 23.5988 $52.63 ETH <0.01% $0.041142 1,110 $45.67 ETH <0.01% $1 40.7027 $40.7 ETH <0.01% $7,141.29 0.00497799 $35.55 ETH <0.01% $0.004294 6,800 $29.2 ETH <0.01% $0.528682 45 $23.79 ETH <0.01% $0.002081 10,000 $20.81 ETH <0.01% $2.26 8.9493 $20.23 ETH <0.01% $0.874216 20 $17.48 ETH <0.01% $0.010737 1,610.817 $17.3 ETH <0.01% $2.57 6.4641 $16.61 ETH <0.01% $0.041805 381.6609 $15.96 ETH <0.01% $0.005067 2,921.4 $14.8 ETH <0.01% $0.00644 2,000.001 $12.88 ETH <0.01% $0.422073 18.5568 $7.83 ETH <0.01% $0.000048 96,015.9149 $4.61 ETH <0.01% $0.003727 917.3588 $3.42 ETH <0.01% $0.030444 100.0059 $3.04 ETH <0.01% $0.303058 8.32 $2.52 ETH <0.01% $1 2.01 $2.01 ETH <0.01% $33.75 0.05 $1.69 ETH <0.01% $0.001061 1,000 $1.06 ETH <0.01% $0.004356 200 $0.8712 ETH <0.01% $21.59 0.0335 $0.7232 ETH <0.01% $0.002963 200 $0.5925 ETH <0.01% $0.000006 20,000 $0.1106 BSC <0.01% $3,376.03 0.0181 $61.21 BASE <0.01% $0.005889 4,324.6182 $25.47 BASE <0.01% <$0.000001 295,774,647 $12.84 BASE <0.01% <$0.000001 17,761,776 $0.158 FTM <0.01% $1.76 5 $8.8 FTM <0.01% $1.12 0.011 $0.012335 POL <0.01% $0.538821 0.0001 $0.000054 Loading...Loading[ Download: CSV Export ][ Download: CSV Export ]A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.
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Private Name Tags (up to 35 characters) can be used for easy identification of addressesPrivate Note:
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Please DO NOT store any passwords or private keys here.Compiler specific version warnings:
The compiled contract might be susceptible to FullInlinerNonExpressionSplitArgumentEvaluationOrder (low-severity), MissingSideEffectsOnSelectorAccess (low-severity), AbiReencodingHeadOverflowWithStaticArrayCleanup (medium-severity), DirtyBytesArrayToStorage (low-severity), DataLocationChangeInInternalOverride (very low-severity), NestedCalldataArrayAbiReencodingSizeValidation (very low-severity), SignedImmutables (very low-severity), ABIDecodeTwoDimensionalArrayMemory (very low-severity), KeccakCaching (medium-severity), EmptyByteArrayCopy (medium-severity), DynamicArrayCleanup (medium-severity) Solidity Compiler Bugs.
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