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Contract

0x24a7fb55e4AC2Cb40944bC560423B496DfA8803F
 

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Stake216835222025-01-23 0:10:11259 days ago1737591011IN
0x24a7fb55...6DfA8803F
0 ETH0.001533428.1695659
Withdraw216467112025-01-17 20:50:23264 days ago1737147023IN
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0 ETH0.0022331917.87169396
Stake216467082025-01-17 20:49:47264 days ago1737146987IN
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0 ETH0.0029697215.8226887
Withdraw215632532025-01-06 5:10:47275 days ago1736140247IN
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0 ETH0.000810127.02059617
Stake214275662024-12-18 6:15:35294 days ago1734502535IN
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0 ETH0.0020709411.03324522
Withdraw214211722024-12-17 8:50:35295 days ago1734425435IN
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0 ETH0.001322889.9508807
Stake213969382024-12-13 23:41:23299 days ago1734133283IN
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0 ETH0.0020988111.18105843
Stake207357582024-09-12 16:35:23391 days ago1726158923IN
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0 ETH0.000864796.40241206
Stake207357122024-09-12 16:26:11391 days ago1726158371IN
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0 ETH0.000972097.19738975
Withdraw207297942024-09-11 20:36:11392 days ago1726086971IN
0x24a7fb55...6DfA8803F
0 ETH0.00074165.93433679
Withdraw207297832024-09-11 20:33:59392 days ago1726086839IN
0x24a7fb55...6DfA8803F
0 ETH0.000697265.57952007
Stake207297782024-09-11 20:32:59392 days ago1726086779IN
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0 ETH0.000735915.44874774
Stake207297652024-09-11 20:30:23392 days ago1726086623IN
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0 ETH0.000682785.05532614
Stake207171322024-09-10 2:07:59393 days ago1725934079IN
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0 ETH0.000755874.02757361
Stake206967232024-09-07 5:46:59396 days ago1725688019IN
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0 ETH0.000274131.4990485
Stake206851242024-09-05 14:56:35398 days ago1725548195IN
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0 ETH0.000944255.03128879
Stake206772712024-09-04 12:38:47399 days ago1725453527IN
0x24a7fb55...6DfA8803F
0 ETH0.000283632.10024038
Stake206704352024-09-03 13:45:35400 days ago1725371135IN
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0 ETH0.001050985.6
Stake206648022024-09-02 18:53:59401 days ago1725303239IN
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0 ETH0.001031737.63827541
Withdraw206647972024-09-02 18:52:59401 days ago1725303179IN
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0 ETH0.000956997.65857473
Withdraw206647902024-09-02 18:51:35401 days ago1725303095IN
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0 ETH0.000913427.30924269
Stake206647842024-09-02 18:50:23401 days ago1725303023IN
0x24a7fb55...6DfA8803F
0 ETH0.000959997.10720008
Stake206616232024-09-02 8:14:35401 days ago1725264875IN
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0 ETH0.000490233.62875965
Stake206599002024-09-02 2:28:47401 days ago1725244127IN
0x24a7fb55...6DfA8803F
0 ETH0.000196061.04477523
Stake206576062024-09-01 18:46:59402 days ago1725216419IN
0x24a7fb55...6DfA8803F
0 ETH0.000228011.21501319
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Contract Source Code Verified (Exact Match)

Contract Name:
StakingPoolV2

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
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// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import './libraries/StakingPoolLogicV2.sol';
import './interface/IStakingPoolV2.sol';
import './token/StakedElyfiToken.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/access/Ownable.sol';
/// @title Elyfi StakingPool contract
/// @notice Users can stake their asset and earn reward for their staking.
/// The reward calculation is based on the reward index and user balance. The amount of reward index change
/// is inversely proportional to the total amount of supply. Accrued rewards can be obtained by multiplying
/// the difference between the user index and the current index by the user balance. User index and the pool
/// index is updated and aligned with in the staking and withdrawing action.
/// @author Elysia
contract StakingPoolV2 is IStakingPoolV2, StakedElyfiToken, Ownable {
using StakingPoolLogicV2 for PoolData;
constructor(IERC20 stakingAsset_, IERC20 rewardAsset_) StakedElyfiToken(stakingAsset_) {
stakingAsset = stakingAsset_;
rewardAsset = rewardAsset_;
}
struct PoolData {
uint256 duration;
uint256 rewardPerSecond;
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// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import '../StakingPoolV2.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
library StakingPoolLogicV2 {
using StakingPoolLogicV2 for StakingPoolV2.PoolData;
event UpdateStakingPool(
address indexed user,
uint256 newRewardIndex,
uint256 totalPrincipal
);
function getRewardIndex(StakingPoolV2.PoolData storage poolData) internal view returns (uint256) {
uint256 currentTimestamp = block.timestamp < poolData.endTimestamp
? block.timestamp
: poolData.endTimestamp;
uint256 timeDiff = currentTimestamp - poolData.lastUpdateTimestamp;
uint256 totalPrincipal = poolData.totalPrincipal;
if (timeDiff == 0) {
return poolData.rewardIndex;
}
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// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
interface IStakingPoolV2 {
error StakingNotInitiated();
error InvalidAmount();
error ZeroReward();
error OnlyManager();
error NotEnoughPrincipal(uint256 principal);
error ZeroPrincipal();
error Finished();
error Closed();
error Emergency();
event Stake(
address indexed user,
uint256 amount,
uint256 userIndex,
uint256 userPrincipal
);
event Withdraw(
address indexed user,
uint256 amount,
uint256 userIndex,
uint256 userPrincipal
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// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import '@openzeppelin/contracts/token/ERC20/ERC20.sol';
import '@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol';
import '@openzeppelin/contracts/token/ERC20/extensions/ERC20Votes.sol';
import '../libraries/ERC20Metadata.sol';
contract StakedElyfiToken is ERC20, ERC20Permit, ERC20Votes {
IERC20 public immutable underlying;
constructor(IERC20 underlyingToken)
ERC20(
string(
abi.encodePacked(
'Staked',
ERC20Metadata.tokenName(address(underlyingToken))
)
),
string(
abi.encodePacked(
's',
ERC20Metadata.tokenSymbol(address(underlyingToken))
)
)
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// SPDX-License-Identifier: MIT
pragma solidity ^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);
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../../../utils/Address.sol";
/**
* @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 Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./draft-IERC20Permit.sol";
import "../ERC20.sol";
import "../../../utils/cryptography/draft-EIP712.sol";
import "../../../utils/cryptography/ECDSA.sol";
import "../../../utils/Counters.sol";
/**
* @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*
* _Available since v3.4._
*/
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
using Counters for Counters.Counter;
mapping(address => Counters.Counter) private _nonces;
// solhint-disable-next-line var-name-mixedcase
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./draft-ERC20Permit.sol";
import "../../../utils/math/Math.sol";
import "../../../utils/math/SafeCast.sol";
import "../../../utils/cryptography/ECDSA.sol";
/**
* @dev Extension of ERC20 to support Compound-like voting and delegation. This version is more generic than Compound's,
* and supports token supply up to 2^224^ - 1, while COMP is limited to 2^96^ - 1.
*
* NOTE: If exact COMP compatibility is required, use the {ERC20VotesComp} variant of this module.
*
* This extension keeps a history (checkpoints) of each account's vote power. Vote power can be delegated either
* by calling the {delegate} function directly, or by providing a signature to be used with {delegateBySig}. Voting
* power can be queried through the public accessors {getVotes} and {getPastVotes}.
*
* By default, token balance does not account for voting power. This makes transfers cheaper. The downside is that it
* requires users to delegate to themselves in order to activate checkpoints and have their voting power tracked.
* Enabling self-delegation can easily be done by overriding the {delegates} function. Keep in mind however that this
* will significantly increase the base gas cost of transfers.
*
* _Available since v4.2._
*/
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// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import '@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol';
import '@openzeppelin/contracts/utils/Strings.sol';
library ERC20Metadata {
function bytes32ToString(bytes32 x) private pure returns (string memory) {
bytes memory bytesString = new bytes(32);
uint256 charCount = 0;
for (uint256 j = 0; j < 32; j++) {
bytes1 char = x[j];
if (char != 0) {
bytesString[charCount] = char;
charCount++;
}
}
bytes memory bytesStringTrimmed = new bytes(charCount);
for (uint256 j = 0; j < charCount; j++) {
bytesStringTrimmed[j] = bytesString[j];
}
return string(bytesStringTrimmed);
}
// calls an external view token contract method that returns a symbol or name, and parses the output into a string
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// SPDX-License-Identifier: MIT
pragma solidity ^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) {
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./ECDSA.sol";
/**
* @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
*
* The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
* thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
* they need in their contracts using a combination of `abi.encode` and `keccak256`.
*
* This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
* scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
* ({_hashTypedDataV4}).
*
* The implementation of the domain separator was designed to be as efficient as possible while still properly updating
* the chain id to protect against replay attacks on an eventual fork of the chain.
*
* NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
* https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
*
* _Available since v3.4._
*/
abstract contract EIP712 {
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
* of elements in a mapping, issuing ERC721 ids, or counting request ids.
*
* Include with `using Counters for Counters.Counter;`
*/
library Counters {
struct Counter {
// This variable should never be directly accessed by users of the library: interactions must be restricted to
// the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
// this feature: see https://github.com/ethereum/solidity/issues/4637
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such 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.
*
* Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
* all math on `uint256` and `int256` and then downcasting.
*/
library SafeCast {
/**
* @dev Returns the downcasted uint224 from uint256, reverting on
* overflow (when the input is greater than largest uint224).
*
* Counterpart to Solidity's `uint224` operator.
*
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
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Settings
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{
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"optimizer": {
"enabled": true,
"runs": 200
},
"metadata": {
"useLiteralContent": true
},
"libraries": {
"contracts/libraries/ERC20Metadata.sol": {
"ERC20Metadata": "0xC10B6DAFE4D7F7c693F44C51E716166B599644Ba"
}
}
}
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Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"contract IERC20","name":"stakingAsset_","type":"address"},{"internalType":"contract IERC20","name":"rewardAsset_","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"Closed","type":"error"},{"inputs":[],"name":"Emergency","type":"error"},{"inputs":[],"name":"Finished","type":"error"},{"inputs":[],"name":"InvalidAmount","type":"error"},{"inputs":[{"internalType":"uint256","name":"principal","type":"uint256"}],"name":"NotEnoughPrincipal","type":"error"},{"inputs":[],"name":"OnlyManager","type":"error"},{"inputs":[],"name":"StakingNotInitiated","type":"error"},{"inputs":[],"name":"ZeroPrincipal","type":"error"},{"inputs":[],"name":"ZeroReward","type":"error"},{"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":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardLeft","type":"uint256"}],"name":"Claim","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"admin","type":"address"},{"indexed":false,"internalType":"bool","name":"close","type":"bool"}],"name":"ClosePool","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":"address","name":"manager","type":"address"},{"indexed":false,"internalType":"uint256","name":"duration","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardPerSecond","type":"uint256"}],"name":"ExtendPool","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"rewardPerSecond","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"startTimestamp","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"endTimestamp","type":"uint256"}],"name":"InitPool","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"manager","type":"address"},{"indexed":false,"internalType":"uint256","name":"residueAmount","type":"uint256"}],"name":"RetrieveResidue","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"requester","type":"address"},{"indexed":false,"internalType":"address","name":"manager","type":"address"}],"name":"RevokeManager","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"admin","type":"address"},{"indexed":false,"internalType":"bool","name":"emergency","type":"bool"}],"name":"SetEmergency","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"admin","type":"address"},{"indexed":false,"internalType":"address","name":"manager","type":"address"}],"name":"SetManager","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"userIndex","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"userPrincipal","type":"uint256"}],"name":"Stake","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"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"userIndex","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"userPrincipal","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","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":"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":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"closePool","outputs":[],"stateMutability":"nonpayable","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":"rewardPerSecond","type":"uint256"},{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"extendPool","outputs":[],"stateMutability":"nonpayable","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":[],"name":"getPoolData","outputs":[{"internalType":"uint256","name":"rewardPerSecond","type":"uint256"},{"internalType":"uint256","name":"rewardIndex","type":"uint256"},{"internalType":"uint256","name":"startTimestamp","type":"uint256"},{"internalType":"uint256","name":"endTimestamp","type":"uint256"},{"internalType":"uint256","name":"totalPrincipal","type":"uint256"},{"internalType":"uint256","name":"lastUpdateTimestamp","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRewardIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserData","outputs":[{"internalType":"uint256","name":"userIndex","type":"uint256"},{"internalType":"uint256","name":"userReward","type":"uint256"},{"internalType":"uint256","name":"userPrincipal","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserReward","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":"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":"uint256","name":"rewardPerSecond","type":"uint256"},{"internalType":"uint256","name":"startTimestamp","type":"uint256"},{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"initNewPool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"isManager","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","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":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"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":"address","name":"addr","type":"address"}],"name":"renounceManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"retrieveResidue","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"revokeManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardAsset","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"stop","type":"bool"}],"name":"setEmergency","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"setManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stakingAsset","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"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"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"underlying","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000004da34f8264cb33a5c9f17081b9ef5ff6091116f40000000000000000000000004da34f8264cb33a5c9f17081b9ef5ff6091116f4

-----Decoded View---------------
Arg [0] : stakingAsset_ (address): 0x4dA34f8264CB33A5c9F17081B9EF5Ff6091116f4
Arg [1] : rewardAsset_ (address): 0x4dA34f8264CB33A5c9F17081B9EF5Ff6091116f4

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000004da34f8264cb33a5c9f17081b9ef5ff6091116f4
Arg [1] : 0000000000000000000000004da34f8264cb33a5c9f17081b9ef5ff6091116f4


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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.