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0x55BbAb8BbEfc49996507b84cccb92C74a0c2be3F

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EthereansOS: Deployer at txn 0x237a58f61b69bcc82d42433acf1f0c4c5586173c7ecf865562017ac08250093e

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Contract Source Code Verified (Exact Match)

Contract Name:

ItemInteroperableInterface

Compiler Version

v0.8.6+commit.11564f7e

Optimization Enabled:

Yes with 200 runs

Other Settings:

default evmVersion, MIT license

Contract Source Code (Solidity)

IDE

/**
 *Submitted for verification at Etherscan.io on 2021-08-16
*/

// File: node_modules\@openzeppelin\contracts\utils\introspection\IERC165.sol

// SPDX-License-Identifier: MIT

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: @openzeppelin\contracts\token\ERC1155\IERC1155.sol

// SPDX_License_Identifier: MIT

pragma solidity ^0.8.0;


/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155 is IERC165 {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);

    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256[] ids,
        uint256[] values
    );

    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);

    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);

    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
        external
        view
        returns (uint256[] memory);

    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes calldata data
    ) external;

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) external;
}

// File: contracts\model\IERC1155Views.sol

// SPDX_License_Identifier: MIT

pragma solidity >=0.7.0;

/**
 * @title IERC1155Views - An optional utility interface to improve the ERC-1155 Standard.
 * @dev This interface introduces some additional capabilities for ERC-1155 Tokens.
 */
interface IERC1155Views {

    /**
     * @dev Returns the total supply of the given token id
     * @param itemId the id of the token whose availability you want to know 
     */
    function totalSupply(uint256 itemId) external view returns (uint256);

    /**
     * @dev Returns the name of the given token id
     * @param itemId the id of the token whose name you want to know 
     */
    function name(uint256 itemId) external view returns (string memory);

    /**
     * @dev Returns the symbol of the given token id
     * @param itemId the id of the token whose symbol you want to know 
     */
    function symbol(uint256 itemId) external view returns (string memory);

    /**
     * @dev Returns the decimals of the given token id
     * @param itemId the id of the token whose decimals you want to know 
     */
    function decimals(uint256 itemId) external view returns (uint256);

    /**
     * @dev Returns the uri of the given token id
     * @param itemId the id of the token whose uri you want to know 
     */
    function uri(uint256 itemId) external view returns (string memory);
}

// File: contracts\model\Item.sol

//SPDX_License_Identifier: MIT

pragma solidity >=0.7.0;
pragma abicoder v2;



struct Header {
    address host;
    string name;
    string symbol;
    string uri;
}

struct CreateItem {
    Header header;
    bytes32 collectionId;
    uint256 id;
    address[] accounts;
    uint256[] amounts;
}

interface Item is IERC1155, IERC1155Views {

    event CollectionItem(bytes32 indexed fromCollectionId, bytes32 indexed toCollectionId, uint256 indexed itemId);

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

    function burn(address account, uint256 itemId, uint256 amount) external;
    function burnBatch(address account, uint256[] calldata itemIds, uint256[] calldata amounts) external;

    function burn(address account, uint256 itemId, uint256 amount, bytes calldata data) external;
    function burnBatch(address account, uint256[] calldata itemIds, uint256[] calldata amounts, bytes calldata data) external;

    function mintItems(CreateItem[] calldata items) external returns(uint256[] memory itemIds);
    function setItemsCollection(uint256[] calldata itemIds, bytes32[] calldata collectionIds) external returns(bytes32[] memory oldCollectionIds);
    function setItemsMetadata(uint256[] calldata itemIds, Header[] calldata amounts) external returns(Header[] memory oldValues);

    function interoperableOf(uint256 itemId) external view returns(address);
}

// File: node_modules\@ethereansos\swissknife\contracts\generic\model\ILazyInitCapableElement.sol

// SPDX_License_Identifier: MIT
pragma solidity >=0.7.0;


interface ILazyInitCapableElement is IERC165 {

    function lazyInit(bytes calldata lazyInitData) external returns(bytes memory initResponse);
    function initializer() external view returns(address);

    event Host(address indexed from, address indexed to);

    function host() external view returns(address);
    function setHost(address newValue) external returns(address oldValue);

    function subjectIsAuthorizedFor(address subject, address location, bytes4 selector, bytes calldata payload, uint256 value) external view returns(bool);
}

// File: @ethereansos\swissknife\contracts\dynamicMetadata\model\IDynamicMetadataCapableElement.sol

//SPDX_License_Identifier: MIT
pragma solidity >=0.7.0;


interface IDynamicMetadataCapableElement is ILazyInitCapableElement {

    function uri() external view returns(string memory);
    function plainUri() external view returns(string memory);

    function setUri(string calldata newValue) external returns (string memory oldValue);

    function dynamicUriResolver() external view returns(address);
    function setDynamicUriResolver(address newValue) external returns(address oldValue);
}

// File: contracts\model\IItemMainInterface.sol

//SPDX_License_Identifier: MIT
pragma solidity >=0.7.0;



struct ItemData {
    bytes32 collectionId;
    Header header;
    bytes32 domainSeparator;
    uint256 totalSupply;
    mapping(address => uint256) balanceOf;
    mapping(address => mapping(address => uint256)) allowance;
    mapping(address => uint256) nonces;
}

interface IItemMainInterface is Item, IDynamicMetadataCapableElement {

    event Collection(address indexed from, address indexed to, bytes32 indexed collectionId);

    function interoperableInterfaceModel() external view returns(address);

    function collection(bytes32 collectionId) external view returns(address host, string memory name, string memory symbol, string memory uri);
    function collectionUri(bytes32 collectionId) external view returns(string memory);
    function createCollection(Header calldata _collection, CreateItem[] calldata items) external returns(bytes32 collectionId, uint256[] memory itemIds);
    function setCollectionsMetadata(bytes32[] calldata collectionIds, Header[] calldata values) external returns(Header[] memory oldValues);

    function item(uint256 itemId) external view returns(bytes32 collectionId, Header memory header, bytes32 domainSeparator, uint256 totalSupply);

    function mintTransferOrBurn(bool isMulti, bytes calldata data) external;

    function allowance(address account, address spender, uint256 itemId) external view returns(uint256);
    function approve(address account, address spender, uint256 amount, uint256 itemId) external;
    function TYPEHASH_PERMIT() external view returns (bytes32);
    function EIP712_PERMIT_DOMAINSEPARATOR_NAME_AND_VERSION() external view returns(string memory domainSeparatorName, string memory domainSeparatorVersion);
    function permit(uint256 itemId, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external;
    function nonces(address owner, uint256 itemId) external view returns(uint256);
}

// File: @openzeppelin\contracts\token\ERC20\IERC20.sol

// SPDX_License_Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// File: @openzeppelin\contracts\token\ERC20\extensions\IERC20Metadata.sol

// SPDX_License_Identifier: MIT

pragma solidity ^0.8.0;


/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// File: @openzeppelin\contracts\token\ERC20\extensions\draft-IERC20Permit.sol

// SPDX_License_Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// File: contracts\model\IItemInteroperableInterface.sol

//SPDX_License_Identifier: MIT

pragma solidity >=0.7.0;




interface IItemInteroperableInterface is IERC20, IERC20Metadata, IERC20Permit {

    function init() external;
    function mainInterface() external view returns(address);
    function itemId() external view returns(uint256);
    function emitEvent(bool forApprove, bool isMulti, bytes calldata data) external;
    function burn(uint256 amount) external;
    function EIP712_PERMIT_DOMAINSEPARATOR_NAME_AND_VERSION() external view returns(string memory name, string memory version);
}

// File: contracts\impl\ItemInteroperableInterface.sol

//SPDX_License_Identifier: MIT

pragma solidity >=0.7.0;



contract ItemInteroperableInterface is IItemInteroperableInterface {

    address public override mainInterface;

    function init() override external {
        require(mainInterface == address(0));
        mainInterface = msg.sender;
    }

    function DOMAIN_SEPARATOR() external override view returns (bytes32 domainSeparatorValue) {
        (,,domainSeparatorValue,) = IItemMainInterface(mainInterface).item(itemId());
    }

    function EIP712_PERMIT_DOMAINSEPARATOR_NAME_AND_VERSION() external override view returns(string memory, string memory) {
        return IItemMainInterface(mainInterface).EIP712_PERMIT_DOMAINSEPARATOR_NAME_AND_VERSION();
    }

    function itemId() override public view returns(uint256) {
        return uint160(address(this));
    }

    function emitEvent(bool forApprove, bool isMulti, bytes calldata data) override external {
        require(msg.sender == mainInterface, "Unauthorized");
        if(isMulti) {
            (address[] memory froms, address[] memory tos, uint256[] memory amounts) = abi.decode(data, (address[], address[], uint256[]));
            for(uint256 i = 0; i < froms.length; i++) {
                if(forApprove) {
                    emit Approval(froms[i], tos[i], amounts[i]);
                } else {
                    emit Transfer(froms[i], tos[i], amounts[i]);
                }
            }
            return;
        }
        (address from, address to, uint256 amount) = abi.decode(data, (address, address, uint256));
        if(forApprove) {
            emit Approval(from, to, amount);
        } else {
            emit Transfer(from, to, amount);
       }
    }

    function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) override external {
        IItemMainInterface(mainInterface).permit(itemId(), owner, spender, value, deadline, v, r, s);
        emit Approval(owner, spender, value);
    }

    function burn(uint256 amount) override external {
        IItemMainInterface(mainInterface).mintTransferOrBurn(false, abi.encode(msg.sender, msg.sender, address(0), itemId(), amount));
        emit Transfer(msg.sender, address(0), amount);
    }

    function name() override external view returns (string memory) {
        (, Header memory header,,) = IItemMainInterface(mainInterface).item(itemId());
        return header.name;
    }

    function symbol() override external view returns (string memory) {
        (, Header memory header,,) = IItemMainInterface(mainInterface).item(itemId());
        return header.symbol;
    }

    function decimals() override external pure returns (uint8) {
        return 18;
    }

    function nonces(address owner) external override view returns(uint256) {
        return IItemMainInterface(mainInterface).nonces(owner, itemId());
    }

    function totalSupply() override external view returns (uint256 totalSupplyValue) {
        (,,, totalSupplyValue) = IItemMainInterface(mainInterface).item(itemId());
    }

    function balanceOf(address account) override external view returns (uint256) {
        return IItemMainInterface(mainInterface).balanceOf(account, itemId());
    }

    function allowance(address owner, address spender) override external view returns (uint256) {
        return IItemMainInterface(mainInterface).allowance(owner, spender, itemId());
    }

    function approve(address spender, uint256 amount) override external returns(bool) {
        IItemMainInterface(mainInterface).approve(msg.sender, spender, amount, itemId());
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function transfer(address recipient, uint256 amount) override external returns(bool) {
        return _transferFrom(msg.sender, recipient, amount);
    }

    function transferFrom(address sender, address recipient, uint256 amount) override external returns(bool) {
        return _transferFrom(sender, recipient, amount);
    }

    function _transferFrom(address sender, address recipient, uint256 amount) private returns(bool) {
        require(sender != address(0), "transfer from the zero address");
        require(recipient != address(0), "transfer to the zero address");
        IItemMainInterface(mainInterface).mintTransferOrBurn(false, abi.encode(msg.sender, sender, recipient, itemId(), amount));
        emit Transfer(sender, recipient, amount);
        return true;
    }
}

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Contract ABI

[{"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":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"domainSeparatorValue","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"EIP712_PERMIT_DOMAINSEPARATOR_NAME_AND_VERSION","outputs":[{"internalType":"string","name":"","type":"string"},{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"bool","name":"forApprove","type":"bool"},{"internalType":"bool","name":"isMulti","type":"bool"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"emitEvent","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"init","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"itemId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mainInterface","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"totalSupplyValue","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

Contract Creation Code

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Swarm Source

ipfs://87b2fb6dc11af603f6e37d453b8c1f75e07a70b03217ffebaaf60817b2ff6a5f

Block		Transaction	Difficulty	Gas Used	Reward

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Block		Uncle Number	Difficulty	Gas Used	Reward

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Validator Index	Block		Amount

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Transaction Hash	Block		Value	Eth2 PubKey	Valid

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Multichain Portfolio | 30 Chains

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Last updated: less than 1 sec ago

Chain	Token	Portfolio %	Price	Amount	Value

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.

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