{ "address": "0x3577717c7f1f7966C0525f6f67ECf6714638Be5F", "abi": [ { "inputs": [], "stateMutability": "nonpayable", "type": "constructor" }, { "inputs": [ { "internalType": "address", "name": "spender", "type": "address" }, { "internalType": "uint256", "name": "allowance", "type": "uint256" }, { "internalType": "uint256", "name": "needed", "type": "uint256" } ], "name": "ERC20InsufficientAllowance", "type": "error" }, { "inputs": [ { "internalType": "address", "name": "sender", "type": "address" }, { "internalType": "uint256", "name": "balance", "type": "uint256" }, { "internalType": "uint256", "name": "needed", "type": "uint256" } ], "name": "ERC20InsufficientBalance", "type": "error" }, { "inputs": [ { "internalType": "address", "name": "approver", "type": "address" } ], "name": "ERC20InvalidApprover", "type": "error" }, { "inputs": [ { "internalType": "address", "name": "receiver", "type": "address" } ], "name": "ERC20InvalidReceiver", "type": "error" }, { "inputs": [ { "internalType": "address", "name": "sender", "type": "address" } ], "name": "ERC20InvalidSender", "type": "error" }, { "inputs": [ { "internalType": "address", "name": "spender", "type": "address" } ], "name": "ERC20InvalidSpender", "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": "from", "type": "address" }, { "indexed": true, "internalType": "address", "name": "to", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "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": "value", "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": [], "name": "decimals", "outputs": [ { "internalType": "uint8", "name": "", "type": "uint8" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "name", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "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": "to", "type": "address" }, { "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "transfer", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" } ], "transactionHash": "0x0a7018d2ae61c58068d247f15a7c3e384917deb2a3f875e44e8d9b79e5c7897b", "receipt": { "to": null, "from": "0xACF4298346c919b9109F9e31fC7937436E7fe5f7", "contractAddress": "0x3577717c7f1f7966C0525f6f67ECf6714638Be5F", "transactionIndex": 25, "gasUsed": "552631", "logsBloom": "0x00004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000100000000008000000000000000000000000000000000000000000000000020000000000000000000800000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000002000000000000000000000200000000000000000000000000000020000000000000000000000000000000000000000000001000000000000000000000", "blockHash": "0x944be2d0546f1937a7e99adc58b679a08ac9b67ff0cf45031074f742f998b2e3", "transactionHash": 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"{\"compiler\":{\"version\":\"0.8.20+commit.a1b79de6\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"allowance\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"needed\",\"type\":\"uint256\"}],\"name\":\"ERC20InsufficientAllowance\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"balance\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"needed\",\"type\":\"uint256\"}],\"name\":\"ERC20InsufficientBalance\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"approver\",\"type\":\"address\"}],\"name\":\"ERC20InvalidApprover\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"receiver\",\"type\":\"address\"}],\"name\":\"ERC20InvalidReceiver\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"ERC20InvalidSender\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"ERC20InvalidSpender\",\"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\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"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\":\"value\",\"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\":[],\"name\":\"decimals\",\"outputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"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\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"errors\":{\"ERC20InsufficientAllowance(address,uint256,uint256)\":[{\"details\":\"Indicates a failure with the `spender`\\u2019s `allowance`. Used in transfers.\",\"params\":{\"allowance\":\"Amount of tokens a `spender` is allowed to operate with.\",\"needed\":\"Minimum amount required to perform a transfer.\",\"spender\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC20InsufficientBalance(address,uint256,uint256)\":[{\"details\":\"Indicates an error related to the current `balance` of a `sender`. Used in transfers.\",\"params\":{\"balance\":\"Current balance for the interacting account.\",\"needed\":\"Minimum amount required to perform a transfer.\",\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC20InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC20InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC20InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC20InvalidSpender(address)\":[{\"details\":\"Indicates a failure with the `spender` to be approved. Used in approvals.\",\"params\":{\"spender\":\"Address that may be allowed to operate on tokens without being their owner.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when the allowance of a `spender` for an `owner` is set by a call to {approve}. `value` is the new allowance.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `value` tokens are moved from one account (`from`) to another (`to`). Note that `value` may be zero.\"}},\"kind\":\"dev\",\"methods\":{\"allowance(address,address)\":{\"details\":\"See {IERC20-allowance}.\"},\"approve(address,uint256)\":{\"details\":\"See {IERC20-approve}. NOTE: If `value` is the maximum `uint256`, the allowance is not updated on `transferFrom`. This is semantically equivalent to an infinite approval. Requirements: - `spender` cannot be the zero address.\"},\"balanceOf(address)\":{\"details\":\"See {IERC20-balanceOf}.\"},\"decimals()\":{\"details\":\"Returns the number of decimals used to get its user representation. For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5.05` (`505 / 10 ** 2`). Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. This is the default value returned by this function, unless it's overridden. NOTE: This information is only used for _display_ purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}.\"},\"name()\":{\"details\":\"Returns the name of the token.\"},\"symbol()\":{\"details\":\"Returns the symbol of the token, usually a shorter version of the name.\"},\"totalSupply()\":{\"details\":\"See {IERC20-totalSupply}.\"},\"transfer(address,uint256)\":{\"details\":\"See {IERC20-transfer}. Requirements: - `to` cannot be the zero address. - the caller must have a balance of at least `value`.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See {IERC20-transferFrom}. Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20}. NOTE: Does not update the allowance if the current allowance is the maximum `uint256`. Requirements: - `from` and `to` cannot be the zero address. - `from` must have a balance of at least `value`. - the caller must have allowance for ``from``'s tokens of at least `value`.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"contracts/Balloons.sol\":\"Balloons\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\",\"useLiteralContent\":true},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/interfaces/draft-IERC6093.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)\\npragma solidity ^0.8.20;\\n\\n/**\\n * @dev Standard ERC20 Errors\\n * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.\\n */\\ninterface IERC20Errors {\\n /**\\n * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\\n * @param sender Address whose tokens are being transferred.\\n * @param balance Current balance for the interacting account.\\n * @param needed Minimum amount required to perform a transfer.\\n */\\n error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);\\n\\n /**\\n * @dev Indicates a failure with the token `sender`. Used in transfers.\\n * @param sender Address whose tokens are being transferred.\\n */\\n error ERC20InvalidSender(address sender);\\n\\n /**\\n * @dev Indicates a failure with the token `receiver`. Used in transfers.\\n * @param receiver Address to which tokens are being transferred.\\n */\\n error ERC20InvalidReceiver(address receiver);\\n\\n /**\\n * @dev Indicates a failure with the `spender`\\u2019s `allowance`. Used in transfers.\\n * @param spender Address that may be allowed to operate on tokens without being their owner.\\n * @param allowance Amount of tokens a `spender` is allowed to operate with.\\n * @param needed Minimum amount required to perform a transfer.\\n */\\n error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);\\n\\n /**\\n * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\\n * @param approver Address initiating an approval operation.\\n */\\n error ERC20InvalidApprover(address approver);\\n\\n /**\\n * @dev Indicates a failure with the `spender` to be approved. Used in approvals.\\n * @param spender Address that may be allowed to operate on tokens without being their owner.\\n */\\n error ERC20InvalidSpender(address spender);\\n}\\n\\n/**\\n * @dev Standard ERC721 Errors\\n * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.\\n */\\ninterface IERC721Errors {\\n /**\\n * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\\n * Used in balance queries.\\n * @param owner Address of the current owner of a token.\\n */\\n error ERC721InvalidOwner(address owner);\\n\\n /**\\n * @dev Indicates a `tokenId` whose `owner` is the zero address.\\n * @param tokenId Identifier number of a token.\\n */\\n error ERC721NonexistentToken(uint256 tokenId);\\n\\n /**\\n * @dev Indicates an error related to the ownership over a particular token. Used in transfers.\\n * @param sender Address whose tokens are being transferred.\\n * @param tokenId Identifier number of a token.\\n * @param owner Address of the current owner of a token.\\n */\\n error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);\\n\\n /**\\n * @dev Indicates a failure with the token `sender`. Used in transfers.\\n * @param sender Address whose tokens are being transferred.\\n */\\n error ERC721InvalidSender(address sender);\\n\\n /**\\n * @dev Indicates a failure with the token `receiver`. Used in transfers.\\n * @param receiver Address to which tokens are being transferred.\\n */\\n error ERC721InvalidReceiver(address receiver);\\n\\n /**\\n * @dev Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\\n * @param operator Address that may be allowed to operate on tokens without being their owner.\\n * @param tokenId Identifier number of a token.\\n */\\n error ERC721InsufficientApproval(address operator, uint256 tokenId);\\n\\n /**\\n * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\\n * @param approver Address initiating an approval operation.\\n */\\n error ERC721InvalidApprover(address approver);\\n\\n /**\\n * @dev Indicates a failure with the `operator` to be approved. Used in approvals.\\n * @param operator Address that may be allowed to operate on tokens without being their owner.\\n */\\n error ERC721InvalidOperator(address operator);\\n}\\n\\n/**\\n * @dev Standard ERC1155 Errors\\n * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.\\n */\\ninterface IERC1155Errors {\\n /**\\n * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\\n * @param sender Address whose tokens are being transferred.\\n * @param balance Current balance for the interacting account.\\n * @param needed Minimum amount required to perform a transfer.\\n * @param tokenId Identifier number of a token.\\n */\\n error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);\\n\\n /**\\n * @dev Indicates a failure with the token `sender`. Used in transfers.\\n * @param sender Address whose tokens are being transferred.\\n */\\n error ERC1155InvalidSender(address sender);\\n\\n /**\\n * @dev Indicates a failure with the token `receiver`. Used in transfers.\\n * @param receiver Address to which tokens are being transferred.\\n */\\n error ERC1155InvalidReceiver(address receiver);\\n\\n /**\\n * @dev Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\\n * @param operator Address that may be allowed to operate on tokens without being their owner.\\n * @param owner Address of the current owner of a token.\\n */\\n error ERC1155MissingApprovalForAll(address operator, address owner);\\n\\n /**\\n * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\\n * @param approver Address initiating an approval operation.\\n */\\n error ERC1155InvalidApprover(address approver);\\n\\n /**\\n * @dev Indicates a failure with the `operator` to be approved. Used in approvals.\\n * @param operator Address that may be allowed to operate on tokens without being their owner.\\n */\\n error ERC1155InvalidOperator(address operator);\\n\\n /**\\n * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.\\n * Used in batch transfers.\\n * @param idsLength Length of the array of token identifiers\\n * @param valuesLength Length of the array of token amounts\\n */\\n error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);\\n}\\n\",\"keccak256\":\"0x60c65f701957fdd6faea1acb0bb45825791d473693ed9ecb34726fdfaa849dd7\",\"license\":\"MIT\"},\"@openzeppelin/contracts/token/ERC20/ERC20.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol)\\n\\npragma solidity ^0.8.20;\\n\\nimport {IERC20} from \\\"./IERC20.sol\\\";\\nimport {IERC20Metadata} from \\\"./extensions/IERC20Metadata.sol\\\";\\nimport {Context} from \\\"../../utils/Context.sol\\\";\\nimport {IERC20Errors} from \\\"../../interfaces/draft-IERC6093.sol\\\";\\n\\n/**\\n * @dev Implementation of the {IERC20} interface.\\n *\\n * This implementation is agnostic to the way tokens are created. This means\\n * that a supply mechanism has to be added in a derived contract using {_mint}.\\n *\\n * TIP: For a detailed writeup see our guide\\n * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How\\n * to implement supply mechanisms].\\n *\\n * The default value of {decimals} is 18. To change this, you should override\\n * this function so it returns a different value.\\n *\\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\\n * instead returning `false` on failure. This behavior is nonetheless\\n * conventional and does not conflict with the expectations of ERC20\\n * applications.\\n *\\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\\n * This allows applications to reconstruct the allowance for all accounts just\\n * by listening to said events. Other implementations of the EIP may not emit\\n * these events, as it isn't required by the specification.\\n */\\nabstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {\\n mapping(address account => uint256) private _balances;\\n\\n mapping(address account => mapping(address spender => uint256)) private _allowances;\\n\\n uint256 private _totalSupply;\\n\\n string private _name;\\n string private _symbol;\\n\\n /**\\n * @dev Sets the values for {name} and {symbol}.\\n *\\n * All two of these values are immutable: they can only be set once during\\n * construction.\\n */\\n constructor(string memory name_, string memory symbol_) {\\n _name = name_;\\n _symbol = symbol_;\\n }\\n\\n /**\\n * @dev Returns the name of the token.\\n */\\n function name() public view virtual returns (string memory) {\\n return _name;\\n }\\n\\n /**\\n * @dev Returns the symbol of the token, usually a shorter version of the\\n * name.\\n */\\n function symbol() public view virtual returns (string memory) {\\n return _symbol;\\n }\\n\\n /**\\n * @dev Returns the number of decimals used to get its user representation.\\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\\n *\\n * Tokens usually opt for a value of 18, imitating the relationship between\\n * Ether and Wei. This is the default value returned by this function, unless\\n * it's overridden.\\n *\\n * NOTE: This information is only used for _display_ purposes: it in\\n * no way affects any of the arithmetic of the contract, including\\n * {IERC20-balanceOf} and {IERC20-transfer}.\\n */\\n function decimals() public view virtual returns (uint8) {\\n return 18;\\n }\\n\\n /**\\n * @dev See {IERC20-totalSupply}.\\n */\\n function totalSupply() public view virtual returns (uint256) {\\n return _totalSupply;\\n }\\n\\n /**\\n * @dev See {IERC20-balanceOf}.\\n */\\n function balanceOf(address account) public view virtual returns (uint256) {\\n return _balances[account];\\n }\\n\\n /**\\n * @dev See {IERC20-transfer}.\\n *\\n * Requirements:\\n *\\n * - `to` cannot be the zero address.\\n * - the caller must have a balance of at least `value`.\\n */\\n function transfer(address to, uint256 value) public virtual returns (bool) {\\n address owner = _msgSender();\\n _transfer(owner, to, value);\\n return true;\\n }\\n\\n /**\\n * @dev See {IERC20-allowance}.\\n */\\n function allowance(address owner, address spender) public view virtual returns (uint256) {\\n return _allowances[owner][spender];\\n }\\n\\n /**\\n * @dev See {IERC20-approve}.\\n *\\n * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on\\n * `transferFrom`. This is semantically equivalent to an infinite approval.\\n *\\n * Requirements:\\n *\\n * - `spender` cannot be the zero address.\\n */\\n function approve(address spender, uint256 value) public virtual returns (bool) {\\n address owner = _msgSender();\\n _approve(owner, spender, value);\\n return true;\\n }\\n\\n /**\\n * @dev See {IERC20-transferFrom}.\\n *\\n * Emits an {Approval} event indicating the updated allowance. This is not\\n * required by the EIP. See the note at the beginning of {ERC20}.\\n *\\n * NOTE: Does not update the allowance if the current allowance\\n * is the maximum `uint256`.\\n *\\n * Requirements:\\n *\\n * - `from` and `to` cannot be the zero address.\\n * - `from` must have a balance of at least `value`.\\n * - the caller must have allowance for ``from``'s tokens of at least\\n * `value`.\\n */\\n function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {\\n address spender = _msgSender();\\n _spendAllowance(from, spender, value);\\n _transfer(from, to, value);\\n return true;\\n }\\n\\n /**\\n * @dev Moves a `value` amount of tokens from `from` to `to`.\\n *\\n * This internal function is equivalent to {transfer}, and can be used to\\n * e.g. implement automatic token fees, slashing mechanisms, etc.\\n *\\n * Emits a {Transfer} event.\\n *\\n * NOTE: This function is not virtual, {_update} should be overridden instead.\\n */\\n function _transfer(address from, address to, uint256 value) internal {\\n if (from == address(0)) {\\n revert ERC20InvalidSender(address(0));\\n }\\n if (to == address(0)) {\\n revert ERC20InvalidReceiver(address(0));\\n }\\n _update(from, to, value);\\n }\\n\\n /**\\n * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`\\n * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding\\n * this function.\\n *\\n * Emits a {Transfer} event.\\n */\\n function _update(address from, address to, uint256 value) internal virtual {\\n if (from == address(0)) {\\n // Overflow check required: The rest of the code assumes that totalSupply never overflows\\n _totalSupply += value;\\n } else {\\n uint256 fromBalance = _balances[from];\\n if (fromBalance < value) {\\n revert ERC20InsufficientBalance(from, fromBalance, value);\\n }\\n unchecked {\\n // Overflow not possible: value <= fromBalance <= totalSupply.\\n _balances[from] = fromBalance - value;\\n }\\n }\\n\\n if (to == address(0)) {\\n unchecked {\\n // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.\\n _totalSupply -= value;\\n }\\n } else {\\n unchecked {\\n // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.\\n _balances[to] += value;\\n }\\n }\\n\\n emit Transfer(from, to, value);\\n }\\n\\n /**\\n * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).\\n * Relies on the `_update` mechanism\\n *\\n * Emits a {Transfer} event with `from` set to the zero address.\\n *\\n * NOTE: This function is not virtual, {_update} should be overridden instead.\\n */\\n function _mint(address account, uint256 value) internal {\\n if (account == address(0)) {\\n revert ERC20InvalidReceiver(address(0));\\n }\\n _update(address(0), account, value);\\n }\\n\\n /**\\n * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.\\n * Relies on the `_update` mechanism.\\n *\\n * Emits a {Transfer} event with `to` set to the zero address.\\n *\\n * NOTE: This function is not virtual, {_update} should be overridden instead\\n */\\n function _burn(address account, uint256 value) internal {\\n if (account == address(0)) {\\n revert ERC20InvalidSender(address(0));\\n }\\n _update(account, address(0), value);\\n }\\n\\n /**\\n * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.\\n *\\n * This internal function is equivalent to `approve`, and can be used to\\n * e.g. set automatic allowances for certain subsystems, etc.\\n *\\n * Emits an {Approval} event.\\n *\\n * Requirements:\\n *\\n * - `owner` cannot be the zero address.\\n * - `spender` cannot be the zero address.\\n *\\n * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.\\n */\\n function _approve(address owner, address spender, uint256 value) internal {\\n _approve(owner, spender, value, true);\\n }\\n\\n /**\\n * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.\\n *\\n * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by\\n * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any\\n * `Approval` event during `transferFrom` operations.\\n *\\n * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to\\n * true using the following override:\\n * ```\\n * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {\\n * super._approve(owner, spender, value, true);\\n * }\\n * ```\\n *\\n * Requirements are the same as {_approve}.\\n */\\n function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {\\n if (owner == address(0)) {\\n revert ERC20InvalidApprover(address(0));\\n }\\n if (spender == address(0)) {\\n revert ERC20InvalidSpender(address(0));\\n }\\n _allowances[owner][spender] = value;\\n if (emitEvent) {\\n emit Approval(owner, spender, value);\\n }\\n }\\n\\n /**\\n * @dev Updates `owner` s allowance for `spender` based on spent `value`.\\n *\\n * Does not update the allowance value in case of infinite allowance.\\n * Revert if not enough allowance is available.\\n *\\n * Does not emit an {Approval} event.\\n */\\n function _spendAllowance(address owner, address spender, uint256 value) internal virtual {\\n uint256 currentAllowance = allowance(owner, spender);\\n if (currentAllowance != type(uint256).max) {\\n if (currentAllowance < value) {\\n revert ERC20InsufficientAllowance(spender, currentAllowance, value);\\n }\\n unchecked {\\n _approve(owner, spender, currentAllowance - value, false);\\n }\\n }\\n }\\n}\\n\",\"keccak256\":\"0xc3e1fa9d1987f8d349dfb4d6fe93bf2ca014b52ba335cfac30bfe71e357e6f80\",\"license\":\"MIT\"},\"@openzeppelin/contracts/token/ERC20/IERC20.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)\\n\\npragma solidity ^0.8.20;\\n\\n/**\\n * @dev Interface of the ERC20 standard as defined in the EIP.\\n */\\ninterface IERC20 {\\n /**\\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\\n * another (`to`).\\n *\\n * Note that `value` may be zero.\\n */\\n event Transfer(address indexed from, address indexed to, uint256 value);\\n\\n /**\\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\\n * a call to {approve}. `value` is the new allowance.\\n */\\n event Approval(address indexed owner, address indexed spender, uint256 value);\\n\\n /**\\n * @dev Returns the value of tokens in existence.\\n */\\n function totalSupply() external view returns (uint256);\\n\\n /**\\n * @dev Returns the value of tokens owned by `account`.\\n */\\n function balanceOf(address account) external view returns (uint256);\\n\\n /**\\n * @dev Moves a `value` amount of tokens from the caller's account to `to`.\\n *\\n * Returns a boolean value indicating whether the operation succeeded.\\n *\\n * Emits a {Transfer} event.\\n */\\n function transfer(address to, uint256 value) external returns (bool);\\n\\n /**\\n * @dev Returns the remaining number of tokens that `spender` will be\\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\\n * zero by default.\\n *\\n * This value changes when {approve} or {transferFrom} are called.\\n */\\n function allowance(address owner, address spender) external view returns (uint256);\\n\\n /**\\n * @dev Sets a `value` amount of tokens as the allowance of `spender` over the\\n * caller's tokens.\\n *\\n * Returns a boolean value indicating whether the operation succeeded.\\n *\\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\\n * that someone may use both the old and the new allowance by unfortunate\\n * transaction ordering. One possible solution to mitigate this race\\n * condition is to first reduce the spender's allowance to 0 and set the\\n * desired value afterwards:\\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\\n *\\n * Emits an {Approval} event.\\n */\\n function approve(address spender, uint256 value) external returns (bool);\\n\\n /**\\n * @dev Moves a `value` amount of tokens from `from` to `to` using the\\n * allowance mechanism. `value` is then deducted from the caller's\\n * allowance.\\n *\\n * Returns a boolean value indicating whether the operation succeeded.\\n *\\n * Emits a {Transfer} event.\\n */\\n function transferFrom(address from, address to, uint256 value) external returns (bool);\\n}\\n\",\"keccak256\":\"0xc6a8ff0ea489379b61faa647490411b80102578440ab9d84e9a957cc12164e70\",\"license\":\"MIT\"},\"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)\\n\\npragma solidity ^0.8.20;\\n\\nimport {IERC20} from \\\"../IERC20.sol\\\";\\n\\n/**\\n * @dev Interface for the optional metadata functions from the ERC20 standard.\\n */\\ninterface IERC20Metadata is IERC20 {\\n /**\\n * @dev Returns the name of the token.\\n */\\n function name() external view returns (string memory);\\n\\n /**\\n * @dev Returns the symbol of the token.\\n */\\n function symbol() external view returns (string memory);\\n\\n /**\\n * @dev Returns the decimals places of the token.\\n */\\n function decimals() external view returns (uint8);\\n}\\n\",\"keccak256\":\"0xaa761817f6cd7892fcf158b3c776b34551cde36f48ff9703d53898bc45a94ea2\",\"license\":\"MIT\"},\"@openzeppelin/contracts/utils/Context.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)\\n\\npragma solidity ^0.8.20;\\n\\n/**\\n * @dev Provides information about the current execution context, including the\\n * sender of the transaction and its data. While these are generally available\\n * via msg.sender and msg.data, they should not be accessed in such a direct\\n * manner, since when dealing with meta-transactions the account sending and\\n * paying for execution may not be the actual sender (as far as an application\\n * is concerned).\\n *\\n * This contract is only required for intermediate, library-like contracts.\\n */\\nabstract contract Context {\\n function _msgSender() internal view virtual returns (address) {\\n return msg.sender;\\n }\\n\\n function _msgData() internal view virtual returns (bytes calldata) {\\n return msg.data;\\n }\\n\\n function _contextSuffixLength() internal view virtual returns (uint256) {\\n return 0;\\n }\\n}\\n\",\"keccak256\":\"0x493033a8d1b176a037b2cc6a04dad01a5c157722049bbecf632ca876224dd4b2\",\"license\":\"MIT\"},\"contracts/Balloons.sol\":{\"content\":\"//SPDX-License-Identifier: MIT\\npragma solidity >=0.8.0 <0.9.0;\\n\\nimport \\\"@openzeppelin/contracts/token/ERC20/ERC20.sol\\\";\\n\\ncontract Balloons is ERC20 {\\n constructor() ERC20(\\\"Balloons\\\", \\\"BAL\\\") {\\n _mint(msg.sender, 1000 ether); // mints 1000 balloons!\\n }\\n}\\n\",\"keccak256\":\"0xe786595df79b68058495296f246653b2bf9a20dffed332aa3c5a6493a3c3d473\",\"license\":\"MIT\"}},\"version\":1}", "bytecode": 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"devdoc": { "errors": { "ERC20InsufficientAllowance(address,uint256,uint256)": [ { "details": "Indicates a failure with the `spender`’s `allowance`. Used in transfers.", "params": { "allowance": "Amount of tokens a `spender` is allowed to operate with.", "needed": "Minimum amount required to perform a transfer.", "spender": "Address that may be allowed to operate on tokens without being their owner." } } ], "ERC20InsufficientBalance(address,uint256,uint256)": [ { "details": "Indicates an error related to the current `balance` of a `sender`. Used in transfers.", "params": { "balance": "Current balance for the interacting account.", "needed": "Minimum amount required to perform a transfer.", "sender": "Address whose tokens are being transferred." } } ], "ERC20InvalidApprover(address)": [ { "details": "Indicates a failure with the `approver` of a token to be approved. Used in approvals.", "params": { "approver": "Address initiating an approval operation." } } ], "ERC20InvalidReceiver(address)": [ { "details": "Indicates a failure with the token `receiver`. Used in transfers.", "params": { "receiver": "Address to which tokens are being transferred." } } ], "ERC20InvalidSender(address)": [ { "details": "Indicates a failure with the token `sender`. Used in transfers.", "params": { "sender": "Address whose tokens are being transferred." } } ], "ERC20InvalidSpender(address)": [ { "details": "Indicates a failure with the `spender` to be approved. Used in approvals.", "params": { "spender": "Address that may be allowed to operate on tokens without being their owner." } } ] }, "events": { "Approval(address,address,uint256)": { "details": "Emitted when the allowance of a `spender` for an `owner` is set by a call to {approve}. `value` is the new allowance." }, "Transfer(address,address,uint256)": { "details": "Emitted when `value` tokens are moved from one account (`from`) to another (`to`). Note that `value` may be zero." } }, "kind": "dev", "methods": { "allowance(address,address)": { "details": "See {IERC20-allowance}." }, "approve(address,uint256)": { "details": "See {IERC20-approve}. NOTE: If `value` is the maximum `uint256`, the allowance is not updated on `transferFrom`. This is semantically equivalent to an infinite approval. Requirements: - `spender` cannot be the zero address." }, "balanceOf(address)": { "details": "See {IERC20-balanceOf}." }, "decimals()": { "details": "Returns the number of decimals used to get its user representation. For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5.05` (`505 / 10 ** 2`). Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. This is the default value returned by this function, unless it's overridden. NOTE: This information is only used for _display_ purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}." }, "name()": { "details": "Returns the name of the token." }, "symbol()": { "details": "Returns the symbol of the token, usually a shorter version of the name." }, "totalSupply()": { "details": "See {IERC20-totalSupply}." }, "transfer(address,uint256)": { "details": "See {IERC20-transfer}. Requirements: - `to` cannot be the zero address. - the caller must have a balance of at least `value`." }, "transferFrom(address,address,uint256)": { "details": "See {IERC20-transferFrom}. Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20}. NOTE: Does not update the allowance if the current allowance is the maximum `uint256`. Requirements: - `from` and `to` cannot be the zero address. - `from` must have a balance of at least `value`. - the caller must have allowance for ``from``'s tokens of at least `value`." } }, "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 }, "storageLayout": { "storage": [ { "astId": 159, "contract": "contracts/Balloons.sol:Balloons", "label": "_balances", "offset": 0, "slot": "0", "type": "t_mapping(t_address,t_uint256)" }, { "astId": 165, "contract": "contracts/Balloons.sol:Balloons", "label": "_allowances", "offset": 0, "slot": "1", "type": "t_mapping(t_address,t_mapping(t_address,t_uint256))" }, { "astId": 167, "contract": "contracts/Balloons.sol:Balloons", "label": "_totalSupply", "offset": 0, "slot": "2", "type": "t_uint256" }, { "astId": 169, "contract": "contracts/Balloons.sol:Balloons", "label": "_name", "offset": 0, "slot": "3", "type": "t_string_storage" }, { "astId": 171, "contract": "contracts/Balloons.sol:Balloons", "label": "_symbol", "offset": 0, "slot": "4", "type": "t_string_storage" } ], "types": { "t_address": { "encoding": "inplace", "label": "address", "numberOfBytes": "20" }, "t_mapping(t_address,t_mapping(t_address,t_uint256))": { "encoding": "mapping", "key": "t_address", "label": "mapping(address => mapping(address => uint256))", "numberOfBytes": "32", "value": "t_mapping(t_address,t_uint256)" }, "t_mapping(t_address,t_uint256)": { "encoding": "mapping", "key": "t_address", "label": "mapping(address => uint256)", "numberOfBytes": "32", "value": "t_uint256" }, "t_string_storage": { "encoding": "bytes", "label": "string", "numberOfBytes": "32" }, "t_uint256": { "encoding": "inplace", "label": "uint256", "numberOfBytes": "32" } } } }