Contract 0x558Df6Bb25F754Aea5fa2F3eD8e78E7AFE23a1A6 7

 

Contract Overview

Balance:
0.00079459268514592 ETH

ETH Value:
$1.29 (@ $1,618.45/ETH)

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x936626bd36e7da051a19361e4b3d6dd4d9369d6c2e46dfa9b8a5983557d1cf01Update Rewards P...850176752023-04-28 1:55:55146 days 6 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00005747 0.1
0xb6f19aa14739177a403176c546836bd288410e1c63a6afb9308be2e1b046e731Update Rewards P...850176692023-04-28 1:55:54146 days 6 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00005718 0.1
0x8f3b135845ca3f6e1acf300ed50218f66c4a93fdad103c32fda97a14d47f83f9Update Rewards P...850176622023-04-28 1:55:52146 days 6 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00005747 0.1
0x17b09552b39920dcc40bdc2f23cd3637f69d61baf3a261d78acd97921bcbb99dUpdate Rewards P...850176552023-04-28 1:55:50146 days 6 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00005747 0.1
0xe0978d76242618a7c74eb394d9be3a5f49c31379fba28743bfde5ab57fd727d6Update Rewards P...754271832023-03-31 0:56:29174 days 7 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004831 0.1
0xaf32e6db7b6be3e5bb096a8b3f64806c8c45c15ee69bd3abb919323ebc2e7dc5Update Rewards P...754271752023-03-31 0:56:27174 days 7 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004831 0.1
0x323be112ac7deed65b174178457388b024a79504bdd33514c3b2a562b5575bcbUpdate Rewards P...754271652023-03-31 0:56:24174 days 7 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004831 0.1
0xccd98dbf3fb8996b0e0a46e27de9aa846e2d3442f86750452043dca6c57df565Update Rewards P...754271572023-03-31 0:56:22174 days 7 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004831 0.1
0xf95445a6bc5659974570165e7785dfe2cd733fb41191f917fa5d2e475e119055Update Rewards P...679642702023-03-08 16:48:11196 days 15 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00006978 0.1
0x2cad3dd77c4f0415b28bd4f74cc0edddad7b4370989bd9fe06aea76daaad5d95Update Rewards P...679641832023-03-08 16:47:44196 days 15 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00007027 0.1
0x0083e026ad50d4fa5eebd564df7709cda827076f5f83926d380ef706aa800573Update Rewards P...679641602023-03-08 16:47:37196 days 15 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00007027 0.1
0x2756f6df04516427b905e6f729fd74d3db87dd6c9cca5f2df6d03e57173a433bUpdate Rewards P...679641212023-03-08 16:47:26196 days 15 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00007027 0.1
0x3373b11940ababf69489cf0aa3d08efcd8266a272137f08aa3b007ebc9b836f4Update Rewards P...679282512023-03-08 14:12:27196 days 18 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004883 0.1
0x50404b5f38781999f8bce87c08da3b435e503c1adfe458be96ad72fb9e89005bUpdate Rewards P...679282022023-03-08 14:12:14196 days 18 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004883 0.1
0x89ca5029028f46efa9bffb467642c2d1ae7a96c66c20cbec558e4a12b78a4d24Update Rewards P...679281812023-03-08 14:12:09196 days 18 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004883 0.1
0xa751e52899eccd9811db422b28963d758c81572d53df4f3bd8acafee1c758368Update Rewards P...679280562023-03-08 14:11:37196 days 18 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004883 0.1
0x8649b9883bd67bbf00b5c5f59934b1a138d77845d48ad20491c1772867698f0fUpdate Rewards P...569373232023-01-31 17:19:26232 days 15 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00006337 0.1
0x6172c0bb9f4d5c3663be2b49044d8f29c4fbd42f7607e6b930f19c43b2e3c03bUpdate Rewards P...569373162023-01-31 17:19:25232 days 15 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00006337 0.1
0xe0cb57a72eafa61c98bd24afc0404be5aa0ed07f650b589f566071592ba38dbdUpdate Rewards P...569373092023-01-31 17:19:23232 days 15 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00006337 0.1
0xb73c65bf59c228a0c46fe2cf1fc1080d7c7488052d793be2f397674a7089b9b1Update Rewards P...569373012023-01-31 17:19:21232 days 15 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00006337 0.1
0x2edeabde9052fb164a54954f3b83f6743c22b81c885105ec0c6129a7c67f4fccEmergency Withdr...558111852023-01-27 8:29:43236 days 23 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004102 0.1
0xe2aba3a046a1a77b8665d71d0c4837c5e3af173edb8569206b4a9380489c4168Update Rewards P...524106052023-01-11 23:00:17252 days 9 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004397 0.1
0x1db840be38347f1518fb5ed8fe6f3d5a795a6c90eae10768fc4d240cc0221200Update Rewards P...524105432023-01-11 22:59:57252 days 9 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00004397 0.1
0xa3e1f9ddfdbdd1f15e3ea572a1abf72eca5a64efc44e96a25a71e51fd3986217Update Rewards P...519076042023-01-09 19:30:39254 days 12 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH0.00006026 0.1
0x622885d9fddf36b8d32e8ecb0c78612c434e0a0ae7e47544667e96222d7fcd630x600160a0516828892023-01-08 19:00:58255 days 13 hrs ago0xde485812e28824e542b9c2270b6b8ed9232b7d0b IN  Create: BasicStakingStrategy0 ETH0.00070422 0.1
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Latest 25 internal transaction
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0x1c0859d8dfc6166163cbeabbc121b6b2186df161bd716ee11b5e00f0b605231c717217042023-03-20 9:01:42184 days 23 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x1c0859d8dfc6166163cbeabbc121b6b2186df161bd716ee11b5e00f0b605231c717217042023-03-20 9:01:42184 days 23 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x1c0859d8dfc6166163cbeabbc121b6b2186df161bd716ee11b5e00f0b605231c717217042023-03-20 9:01:42184 days 23 hrs ago 0xfca61e79f38a7a82c62f469f55a9df54cb8df678 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH
0xf1252c6479f194376b3e7db0ebd791cf4815e8d53a44ef9348ae287ebfaf0948715164422023-03-19 18:36:11185 days 13 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0xf1252c6479f194376b3e7db0ebd791cf4815e8d53a44ef9348ae287ebfaf0948715164422023-03-19 18:36:11185 days 13 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0xf1252c6479f194376b3e7db0ebd791cf4815e8d53a44ef9348ae287ebfaf0948715164422023-03-19 18:36:11185 days 13 hrs ago 0xfca61e79f38a7a82c62f469f55a9df54cb8df678 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH
0x856f255157d9b1f5e137b31ce692451b77a50abdf6360750a7a3cfb332c4bbe4712364652023-03-18 22:56:26186 days 9 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x856f255157d9b1f5e137b31ce692451b77a50abdf6360750a7a3cfb332c4bbe4712364652023-03-18 22:56:26186 days 9 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x856f255157d9b1f5e137b31ce692451b77a50abdf6360750a7a3cfb332c4bbe4712364652023-03-18 22:56:26186 days 9 hrs ago 0xfca61e79f38a7a82c62f469f55a9df54cb8df678 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH
0x822fad455231925205d812cb75f6eedd89fe45c1ab79682aa8e898ef28beb7e1711998032023-03-18 20:15:55186 days 12 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x822fad455231925205d812cb75f6eedd89fe45c1ab79682aa8e898ef28beb7e1711998032023-03-18 20:15:55186 days 12 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x822fad455231925205d812cb75f6eedd89fe45c1ab79682aa8e898ef28beb7e1711998032023-03-18 20:15:55186 days 12 hrs ago 0xfca61e79f38a7a82c62f469f55a9df54cb8df678 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH
0x22fbbb50a083e5487fb47c5aa8bcef4ad752c91b31ab978e54fcc83d55e9433b711346592023-03-18 15:40:18186 days 16 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x22fbbb50a083e5487fb47c5aa8bcef4ad752c91b31ab978e54fcc83d55e9433b711346592023-03-18 15:40:18186 days 16 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x22fbbb50a083e5487fb47c5aa8bcef4ad752c91b31ab978e54fcc83d55e9433b711346592023-03-18 15:40:18186 days 16 hrs ago 0xfca61e79f38a7a82c62f469f55a9df54cb8df678 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH
0x42260df0e80affd637098261518c20b58411adfd213fa446f12a8cc4d0648cb7711145972023-03-18 14:17:54186 days 18 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x42260df0e80affd637098261518c20b58411adfd213fa446f12a8cc4d0648cb7711145972023-03-18 14:17:54186 days 18 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x42260df0e80affd637098261518c20b58411adfd213fa446f12a8cc4d0648cb7711145972023-03-18 14:17:54186 days 18 hrs ago 0xfca61e79f38a7a82c62f469f55a9df54cb8df678 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH
0xe95be3d7fd5085f7c5e3858a9f67521fba5dcd71296ee6025a50870501f69b45711144902023-03-18 14:17:27186 days 18 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0xe95be3d7fd5085f7c5e3858a9f67521fba5dcd71296ee6025a50870501f69b45711144902023-03-18 14:17:27186 days 18 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0xe95be3d7fd5085f7c5e3858a9f67521fba5dcd71296ee6025a50870501f69b45711144902023-03-18 14:17:27186 days 18 hrs ago 0xfca61e79f38a7a82c62f469f55a9df54cb8df678 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH
0x9b7d530517b9b491e4d4d1608f217f97e7ac42d6aaf765e27e041f20e3a1c158711143622023-03-18 14:16:55186 days 18 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x9b7d530517b9b491e4d4d1608f217f97e7ac42d6aaf765e27e041f20e3a1c158711143622023-03-18 14:16:55186 days 18 hrs ago 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a6 0xfca61e79f38a7a82c62f469f55a9df54cb8df6780 ETH
0x9b7d530517b9b491e4d4d1608f217f97e7ac42d6aaf765e27e041f20e3a1c158711143622023-03-18 14:16:55186 days 18 hrs ago 0xfca61e79f38a7a82c62f469f55a9df54cb8df678 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH
0x066feb33c1211c5d06d043f7afe67bbd0e128d2908f4d595b60841eaf8b5559c711055162023-03-18 13:40:35186 days 18 hrs ago 0xfca61e79f38a7a82c62f469f55a9df54cb8df678 0x558df6bb25f754aea5fa2f3ed8e78e7afe23a1a60 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
BasicStakingStrategy

Compiler Version
v0.8.16+commit.07a7930e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, Unlicense license
File 1 of 13 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

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.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 2 of 13 : IERC721.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

File 3 of 13 : IERC721Enumerable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

File 4 of 13 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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");

        (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");

        (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");

        (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");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal 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
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 5 of 13 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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;
    }
}

File 6 of 13 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

File 7 of 13 : SafeMath.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol)

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
 * now has built in overflow checking.
 */
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) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            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) {
        unchecked {
            // 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) {
        unchecked {
            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) {
        unchecked {
            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) {
        return a + b;
    }

    /**
     * @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) {
        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) {
        return a * b;
    }

    /**
     * @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.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        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) {
        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) {
        unchecked {
            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.
     *
     * 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) {
        unchecked {
            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) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

File 8 of 13 : ISsovV3.sol
//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

// Interfaces
import {IERC721Enumerable} from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol";
import {IERC20} from "../external/interfaces/IERC20.sol";

// Structs
import {Addresses, EpochData, EpochStrikeData, VaultCheckpoint} from "./SsovV3Structs.sol";

/// @title SSOV V3 interface
interface ISsovV3 is IERC721Enumerable {
    function isPut() external view returns (bool);

    function currentEpoch() external view returns (uint256);

    function collateralPrecision() external view returns (uint256);

    function addresses() external view returns (Addresses memory);

    function collateralToken() external view returns (IERC20);

    function deposit(
        uint256 strikeIndex,
        uint256 amount,
        address to
    ) external returns (uint256 tokenId);

    function purchase(
        uint256 strikeIndex,
        uint256 amount,
        address to
    ) external returns (uint256 premium, uint256 totalFee);

    function settle(
        uint256 strikeIndex,
        uint256 amount,
        uint256 epoch,
        address to
    ) external returns (uint256 pnl);

    function withdraw(uint256 tokenId, address to)
        external
        returns (
            uint256 collateralTokenWithdrawAmount,
            uint256[] memory rewardTokenWithdrawAmounts
        );

    function getUnderlyingPrice() external view returns (uint256);

    function getCollateralPrice() external view returns (uint256);

    function getVolatility(uint256 _strike) external view returns (uint256);

    function calculatePremium(
        uint256 _strike,
        uint256 _amount,
        uint256 _expiry
    ) external view returns (uint256 premium);

    function calculatePnl(
        uint256 price,
        uint256 strike,
        uint256 amount,
        uint256 collateralExchangeRate
    ) external view returns (uint256);

    function calculatePurchaseFees(uint256 strike, uint256 amount)
        external
        view
        returns (uint256);

    function calculateSettlementFees(uint256 pnl)
        external
        view
        returns (uint256);

    function getEpochTimes(uint256 epoch)
        external
        view
        returns (uint256 start, uint256 end);

    function writePosition(uint256 tokenId)
        external
        view
        returns (
            uint256 epoch,
            uint256 strike,
            uint256 collateralAmount,
            uint256 checkpointIndex,
            uint256[] memory rewardDistributionRatios
        );

    function getEpochData(uint256 epoch)
        external
        view
        returns (EpochData memory);

    function getEpochStrikeData(uint256 epoch, uint256 strike)
        external
        view
        returns (EpochStrikeData memory);

    function getEpochStrikeCheckpointsLength(uint256 epoch, uint256 strike)
        external
        view
        returns (uint256);

    function checkpoints(
        uint256 epoch,
        uint256 strike,
        uint256 index
    ) external view returns (VaultCheckpoint memory);
}

File 9 of 13 : SsovV3Structs.sol
//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

struct Addresses {
    address feeStrategy;
    address stakingStrategy;
    address optionPricing;
    address priceOracle;
    address volatilityOracle;
    address feeDistributor;
    address optionsTokenImplementation;
}

struct EpochData {
    bool expired;
    uint256 startTime;
    uint256 expiry;
    uint256 settlementPrice;
    uint256 totalCollateralBalance; // Premium + Deposits from all strikes
    uint256 collateralExchangeRate; // Exchange rate for collateral to underlying (Only applicable to CALL options)
    uint256 settlementCollateralExchangeRate; // Exchange rate for collateral to underlying on settlement (Only applicable to CALL options)
    uint256[] strikes;
    uint256[] totalRewardsCollected;
    uint256[] rewardDistributionRatios;
    address[] rewardTokensToDistribute;
}

struct EpochStrikeData {
    address strikeToken;
    uint256 totalCollateral;
    uint256 activeCollateral;
    uint256 totalPremiums;
    uint256 checkpointPointer;
    uint256[] rewardStoredForPremiums;
    uint256[] rewardDistributionRatiosForPremiums;
}

struct VaultCheckpoint {
    uint256 activeCollateral;
    uint256 totalCollateral;
    uint256 accruedPremium;
}

struct WritePosition {
    uint256 epoch;
    uint256 strike;
    uint256 collateralAmount;
    uint256 checkpointIndex;
    uint256[] rewardDistributionRatios;
}

File 10 of 13 : IERC20.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 * NOTE: Modified to include symbols and decimals.
 */
interface IERC20 {
  function totalSupply() external view returns (uint256);

  function symbol() external view returns (string memory);

  function decimals() external view returns (uint8);

  function balanceOf(address account) external view returns (uint256);

  function transfer(address recipient, uint256 amount) external returns (bool);

  function allowance(address owner, address spender)
    external
    view
    returns (uint256);

  function approve(address spender, uint256 amount) external returns (bool);

  function transferFrom(
    address sender,
    address recipient,
    uint256 amount
  ) external returns (bool);

  event Transfer(address indexed from, address indexed to, uint256 value);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

File 11 of 13 : SafeERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {IERC20} from "../interfaces/IERC20.sol";
import {SafeMath} from "@openzeppelin/contracts/utils/math/SafeMath.sol";
import {Address} from "@openzeppelin/contracts/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 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 12 of 13 : BasicStakingStrategy.sol
//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

// Contracts
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";

// Libraries
import {SafeERC20} from "../external/libraries/SafeERC20.sol";

// Interfaces
import {ISsovV3} from "../core/ISsovV3.sol";
import {IStakingStrategy} from "./IStakingStrategy.sol";
import {IERC20} from "../external/interfaces/IERC20.sol";

contract BasicStakingStrategy is IStakingStrategy, Ownable {
    using SafeERC20 for IERC20;

    mapping(uint256 => uint256) public rewardsPerEpoch;

    mapping(uint256 => uint256) public lastTimestamp;

    uint256 public balance;

    address[] public rewardTokens = new address[](1);

    address public immutable ssov;

    event NewRewards(uint256 epoch, uint256 rewards);

    event EmergencyWithdraw(address sender);

    constructor(address _ssov, address _rewardToken) {
        ssov = _ssov;
        rewardTokens[0] = _rewardToken;
    }

    function updateRewardsPerEpoch(uint256 _rewards, uint256 _epoch)
        external
        onlyOwner
    {
        rewardsPerEpoch[_epoch] = _rewards;
        emit NewRewards(_epoch, _rewards);
    }

    function getRewardTokens() external view returns (address[] memory) {
        return rewardTokens;
    }

    function stake(uint256 amount)
        external
        onlySsov(msg.sender)
        returns (uint256[] memory rewardTokenAmounts)
    {
        ISsovV3 _ssov = ISsovV3(ssov);

        uint256 epoch = _ssov.currentEpoch();

        (uint256 startTime, uint256 expiry) = _ssov.getEpochTimes(epoch);

        require(block.timestamp < expiry, "Cannot stake after expiry");

        uint256 rewardRate = rewardsPerEpoch[epoch] / (expiry - startTime);

        balance += amount;

        uint256 rewardsEmitted = rewardRate * (block.timestamp - startTime);

        rewardTokenAmounts = new uint256[](1);

        rewardTokenAmounts[0] = rewardsEmitted;

        emit Stake(msg.sender, amount, balance, rewardTokenAmounts);
    }

    function unstake()
        external
        onlySsov(msg.sender)
        returns (uint256[] memory rewardTokenAmounts)
    {
        ISsovV3 _ssov = ISsovV3(ssov);

        uint256 epoch = _ssov.currentEpoch();

        rewardTokenAmounts = new uint256[](1);

        rewardTokenAmounts[0] = rewardsPerEpoch[epoch];

        IERC20(rewardTokens[0]).safeTransfer(
            msg.sender,
            rewardsPerEpoch[epoch]
        );

        emit Unstake(msg.sender, balance, rewardTokenAmounts);
    }

    /// @notice Transfers all funds to msg.sender
    /// @dev Can only be called by the owner
    /// @param tokens The list of erc20 tokens to withdraw
    /// @param transferNative Whether should transfer the native currency
    function emergencyWithdraw(address[] calldata tokens, bool transferNative)
        external
        onlyOwner
    {
        if (transferNative) payable(msg.sender).transfer(address(this).balance);

        IERC20 token;

        for (uint256 i = 0; i < tokens.length; i++) {
            token = IERC20(tokens[i]);
            token.safeTransfer(msg.sender, token.balanceOf(address(this)));
        }

        emit EmergencyWithdraw(msg.sender);
    }

    modifier onlySsov(address _sender) {
        require(_sender == ssov, "Sender must be the ssov");
        _;
    }
}

File 13 of 13 : IStakingStrategy.sol
//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

interface IStakingStrategy {
    function stake(uint256) external returns (uint256[] memory);

    function unstake() external returns (uint256[] memory);

    function getRewardTokens() external view returns (address[] memory);

    event Stake(
        address sender,
        uint256 amountStaked,
        uint256 totalStakedBalance,
        uint256[] totalRewardsArray
    );

    event Unstake(
        address sender,
        uint256 amountUnstaked,
        uint256[] rewardTokenAmounts
    );
}

Settings
{
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"_ssov","type":"address"},{"internalType":"address","name":"_rewardToken","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"}],"name":"EmergencyWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"epoch","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewards","type":"uint256"}],"name":"NewRewards","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":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountStaked","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalStakedBalance","type":"uint256"},{"indexed":false,"internalType":"uint256[]","name":"totalRewardsArray","type":"uint256[]"}],"name":"Stake","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountUnstaked","type":"uint256"},{"indexed":false,"internalType":"uint256[]","name":"rewardTokenAmounts","type":"uint256[]"}],"name":"Unstake","type":"event"},{"inputs":[],"name":"balance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"tokens","type":"address[]"},{"internalType":"bool","name":"transferNative","type":"bool"}],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getRewardTokens","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"lastTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"rewardTokens","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"rewardsPerEpoch","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ssov","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[{"internalType":"uint256[]","name":"rewardTokenAmounts","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unstake","outputs":[{"internalType":"uint256[]","name":"rewardTokenAmounts","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_rewards","type":"uint256"},{"internalType":"uint256","name":"_epoch","type":"uint256"}],"name":"updateRewardsPerEpoch","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000fca61e79f38a7a82c62f469f55a9df54cb8df67800000000000000000000000013ad51ed4f1b7e9dc168d8a00cb3f4ddd85efa60

-----Decoded View---------------
Arg [0] : _ssov (address): 0xfca61e79f38a7a82c62f469f55a9df54cb8df678
Arg [1] : _rewardToken (address): 0x13ad51ed4f1b7e9dc168d8a00cb3f4ddd85efa60

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000fca61e79f38a7a82c62f469f55a9df54cb8df678
Arg [1] : 00000000000000000000000013ad51ed4f1b7e9dc168d8a00cb3f4ddd85efa60


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