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// SPDX-License-Identifier: MIT
pragma solidity >=0.7.6;
pragma abicoder v2;
interface IERC20 {
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
    event Transfer(address indexed from, address indexed to, uint256 value);
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
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// Copyright (C) 2015, 2016, 2017 Dapphub
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
pragma solidity ^0.4.18;
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// SPDX-License-Identifier: BUSL-1.1
// File: @openzeppelin/contracts/math/SafeMath.sol
pragma solidity >=0.6.0 <0.8.0;
/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
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//SPDX-License-Identifier: MIT
/*
This Contract is coded and developed by Vihali Technology MTV Company Limited and is entirely transferred to Dopa JSC Limited under the Contract for 
    Software Development Services. Accordingly, the ownership and all intellectual property rights including but not limited to rights which arise in 
    the course of or in connection with the Contract shall belong to and are the sole property of Dopa JSC Limited
*/
pragma solidity ^0.8.7;
import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
contract SipherToken is ERC20, Ownable {
    uint256 public constant DECIMALS = 10**18;
    uint256 public constant MAX_SUPPLY = 1_000_000_000*DECIMALS;
    uint256 public constant GAMEPLAY_INCENTIVES_AND_MARKETING_FUND = 304_000_000*DECIMALS;
    uint256 public immutable START_TIME; //= 1638378000
    
    uint256 private _released;
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