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Contract

0x2e00F977d778787d65bd303ADA2fde472C1d9158
 

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Transaction Hash
Method
Block
From
To
Value
Safe Transfer Fr...201027052024-06-16 6:57:352 hrs ago1718521055IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000112863.3542008
Safe Transfer Fr...201026952024-06-16 6:55:352 hrs ago1718520935IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000105593.13832475
Set Approval For...200849092024-06-13 19:13:232 days ago1718306003IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000443969.6178614
Safe Transfer Fr...200847362024-06-13 18:38:472 days ago1718303927IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.0005837211.36408934
Set Approval For...200563392024-06-09 19:24:596 days ago1717961099IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.0005680912.30712307
Set Approval For...200518812024-06-09 4:28:117 days ago1717907291IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000100914.16193288
Set Approval For...200376112024-06-07 4:38:119 days ago1717735091IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000360627.79834644
Set Approval For...200369942024-06-07 2:34:479 days ago1717727687IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.00034367.44384056
Set Approval For...200366072024-06-07 1:16:239 days ago1717722983IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.0005490411.88503177
Set Approval For...200332912024-06-06 14:10:119 days ago1717683011IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.0016398135.52461425
Safe Transfer Fr...200089562024-06-03 4:37:5913 days ago1717389479IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000242637.04099093
Set Approval For...200027912024-06-02 7:57:4714 days ago1717315067IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000269175.82070981
Set Approval For...200027892024-06-02 7:57:2314 days ago1717315043IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000275265.96027839
Safe Transfer Fr...199943922024-06-01 3:50:1115 days ago1717213811IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.0009990117.66917598
Safe Transfer Fr...199943892024-06-01 3:49:3515 days ago1717213775IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.0010646618.83026351
Set Approval For...199902652024-05-31 13:59:5915 days ago1717163999IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.0004676319.28534128
Safe Transfer Fr...199211532024-05-21 22:05:3525 days ago1716329135IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000309739.00965176
Safe Transfer Fr...199016922024-05-19 4:46:3528 days ago1716093995IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.00010673.10393794
Set Approval For...198863072024-05-17 1:06:2330 days ago1715907983IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000068532.61096657
Set Approval For...198863072024-05-17 1:06:2330 days ago1715907983IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000063312.61096657
Set Approval For...198846762024-05-16 19:38:4730 days ago1715888327IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000224054.85398087
Set Approval For...198779282024-05-15 21:00:1131 days ago1715806811IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000235758.97765908
Set Approval For...198779282024-05-15 21:00:1131 days ago1715806811IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000410338.88951201
Set Approval For...198702372024-05-14 19:14:1132 days ago1715714051IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000353247.65257112
Safe Transfer Fr...198519222024-05-12 5:41:1135 days ago1715492471IN
Satoshi Island Land NFT Deeds: SILD Token
0 ETH0.000171213.32602304
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Contract Source Code Verified (Exact Match)

Contract Name:
SatoshiIslandLandNFTDeedCollection

Compiler Version
v0.8.12+commit.f00d7308

Optimization Enabled:
Yes with 2022 runs

Other Settings:
default evmVersion
File 1 of 9 : Collection.sol
pragma solidity 0.8.12;

import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "@openzeppelin/contracts/token/ERC1155/IERC1155Receiver.sol";
import "@openzeppelin/contracts/token/ERC1155/extensions/IERC1155MetadataURI.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

/**
 * @dev Implementation of the basic standard multi-token.
 * See https://eips.ethereum.org/EIPS/eip-1155
 * Originally based on code by Enjin: https://github.com/enjin/erc-1155
 *
 * _Available since v3.1._
 */
contract SatoshiIslandLandNFTDeedCollection is
    Context,
    ERC165,
    IERC1155,
    IERC1155MetadataURI,
    Ownable
{
    using Address for address;

    // Mapping from token ID to account balances
    mapping(uint256 => mapping(address => uint256)) private _balances;

    // Mapping from account to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    // Mapping from tokenId to license agreement IPFS link
    mapping(uint256 => string) private _deeds;

    string private _uri;

    string public name;

    string public symbol;

    uint256 public totalSupply = 18_520;

    event Released();

    /**
     * @dev See {_setURI}.
     */
    constructor(
        string memory nameArg,
        string memory symbolArg,
        string memory uriArg,
        address receiver,
        uint256[] memory amounts,
        string[] memory deedsLinks
    ) {
        name = nameArg;
        symbol = symbolArg;
        _uri = uriArg;
        uint256 amountSum;

        for (uint256 i = 0; i < amounts.length; i++) {
            uint256 amount = amounts[i];
            amountSum += amount;

            _mint(receiver, receiver, i + 1, amount, "");
            _deeds[i + 1] = deedsLinks[i];
        }

        totalSupply = amountSum;

        transferOwnership(receiver);
    }

    /// @notice This function returns the license agreement IPFS link
    /// @dev Get the license agreement by tokenID
    /// @param tokenId The token ID to get license agreement for.
    /// @return IPFS link of token license agreement
    function deed(uint256 tokenId) external view returns (string memory) {
        return _deeds[tokenId];
    }

    /// @notice Reduce supply by burning caller tokens, this function will be called by another smart contract
    /// @dev Burn tokens by sending to burn address and reducing supply
    /// @param from User to be burned from
    /// @param tokenId The token ID
    /// @param amount The amount to be burned
    function burn(
        address from,
        uint256 tokenId,
        uint256 amount
    ) external {
        require(
            isApprovedForAll(from, msg.sender),
            "ERC1155: caller is not  approved"
        );

        _burn(from, tokenId, amount);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override(ERC165, IERC165)
        returns (bool)
    {
        return
            interfaceId == type(IERC1155).interfaceId ||
            interfaceId == type(IERC1155MetadataURI).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC1155MetadataURI-uri}.
     *
     * This implementation returns the same URI for *all* token types. It relies
     * on the token type ID substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * Clients calling this function must replace the `\{id\}` substring with the
     * actual token type ID.
     */
    function uri(uint256) public view virtual override returns (string memory) {
        return _uri;
    }

    /**
     * @dev See {IERC1155-balanceOf}.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id)
        public
        view
        virtual
        override
        returns (uint256)
    {
        require(
            account != address(0),
            "ERC1155: balance query for the zero address"
        );
        return _balances[id][account];
    }

    /**
     * @dev See {IERC1155-balanceOfBatch}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] memory accounts, uint256[] memory ids)
        public
        view
        virtual
        override
        returns (uint256[] memory)
    {
        require(
            accounts.length == ids.length,
            "ERC1155: accounts and ids length mismatch"
        );

        uint256[] memory batchBalances = new uint256[](accounts.length);

        for (uint256 i = 0; i < accounts.length; ++i) {
            batchBalances[i] = balanceOf(accounts[i], ids[i]);
        }

        return batchBalances;
    }

    /**
     * @dev See {IERC1155-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved)
        public
        virtual
        override
    {
        _setApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC1155-isApprovedForAll}.
     */
    function isApprovedForAll(address account, address operator)
        public
        view
        virtual
        override
        returns (bool)
    {
        return _operatorApprovals[account][operator];
    }

    /**
     * @dev See {IERC1155-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: caller is not owner nor approved"
        );
        _safeTransferFrom(from, to, id, amount, data);
    }

    /**
     * @dev See {IERC1155-safeBatchTransferFrom}.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: transfer caller is not owner nor approved"
        );
        _safeBatchTransferFrom(from, to, ids, amounts, data);
    }

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `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 memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

        uint256 fromBalance = _balances[id][from];
        require(
            fromBalance >= amount,
            "ERC1155: insufficient balance for transfer"
        );
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }
        _balances[id][to] += amount;

        emit TransferSingle(operator, from, to, id, amount);

        _doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - 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[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(
            ids.length == amounts.length,
            "ERC1155: ids and amounts length mismatch"
        );
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

        for (uint256 i = 0; i < ids.length; ++i) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = _balances[id][from];
            require(
                fromBalance >= amount,
                "ERC1155: insufficient balance for transfer"
            );
            unchecked {
                _balances[id][from] = fromBalance - amount;
            }
            _balances[id][to] += amount;
        }

        emit TransferBatch(operator, from, to, ids, amounts);

        _doSafeBatchTransferAcceptanceCheck(
            operator,
            from,
            to,
            ids,
            amounts,
            data
        );
    }

    /**
     * @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function _mint(
        address operator,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");

        _balances[id][to] += amount;
        emit TransferSingle(operator, address(0), to, id, amount);

        _doSafeTransferAcceptanceCheck(
            operator,
            address(0),
            to,
            id,
            amount,
            data
        );
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
     *
     * 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 _mintBatch(
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");
        require(
            ids.length == amounts.length,
            "ERC1155: ids and amounts length mismatch"
        );

        address operator = _msgSender();

        for (uint256 i = 0; i < ids.length; i++) {
            _balances[ids[i]][to] += amounts[i];
        }

        emit TransferBatch(operator, address(0), to, ids, amounts);

        _doSafeBatchTransferAcceptanceCheck(
            operator,
            address(0),
            to,
            ids,
            amounts,
            data
        );
    }

    /**
     * @dev Destroys `amount` tokens of token type `id` from `from`
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `from` must have at least `amount` tokens of token type `id`.
     */
    function _burn(
        address from,
        uint256 id,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC1155: burn from the zero address");

        uint256 fromBalance = _balances[id][from];
        require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }

        // Reduce total supply
        totalSupply -= amount;

        emit TransferSingle(msg.sender, from, address(0), id, amount);
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits a {ApprovalForAll} event.
     */
    function _setApprovalForAll(
        address _owner,
        address operator,
        bool approved
    ) internal virtual {
        require(
            _owner != operator,
            "ERC1155: setting approval status for self"
        );
        _operatorApprovals[_owner][operator] = approved;
        emit ApprovalForAll(_owner, operator, approved);
    }

    function _doSafeTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try
                IERC1155Receiver(to).onERC1155Received(
                    operator,
                    from,
                    id,
                    amount,
                    data
                )
            returns (bytes4 response) {
                if (response != IERC1155Receiver.onERC1155Received.selector) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non ERC1155Receiver implementer");
            }
        }
    }

    function _doSafeBatchTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try
                IERC1155Receiver(to).onERC1155BatchReceived(
                    operator,
                    from,
                    ids,
                    amounts,
                    data
                )
            returns (bytes4 response) {
                if (
                    response != IERC1155Receiver.onERC1155BatchReceived.selector
                ) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non ERC1155Receiver implementer");
            }
        }
    }
}

File 2 of 9 : IERC1155.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

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

/**
 * @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 3 of 9 : IERC1155Receiver.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev _Available since v3.1._
 */
interface IERC1155Receiver is IERC165 {
    /**
     * @dev Handles the receipt of a single ERC1155 token type. This function is
     * called at the end of a `safeTransferFrom` after the balance has been updated.
     *
     * NOTE: To accept the transfer, this must return
     * `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
     * (i.e. 0xf23a6e61, or its own function selector).
     *
     * @param operator The address which initiated the transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param id The ID of the token being transferred
     * @param value The amount of tokens being transferred
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
     */
    function onERC1155Received(
        address operator,
        address from,
        uint256 id,
        uint256 value,
        bytes calldata data
    ) external returns (bytes4);

    /**
     * @dev Handles the receipt of a multiple ERC1155 token types. This function
     * is called at the end of a `safeBatchTransferFrom` after the balances have
     * been updated.
     *
     * NOTE: To accept the transfer(s), this must return
     * `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
     * (i.e. 0xbc197c81, or its own function selector).
     *
     * @param operator The address which initiated the batch transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param ids An array containing ids of each token being transferred (order and length must match values array)
     * @param values An array containing amounts of each token being transferred (order and length must match ids array)
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
     */
    function onERC1155BatchReceived(
        address operator,
        address from,
        uint256[] calldata ids,
        uint256[] calldata values,
        bytes calldata data
    ) external returns (bytes4);
}

File 4 of 9 : IERC1155MetadataURI.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol)

pragma solidity ^0.8.0;

import "../IERC1155.sol";

/**
 * @dev Interface of the optional ERC1155MetadataExtension interface, as defined
 * in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155MetadataURI is IERC1155 {
    /**
     * @dev Returns the URI for token type `id`.
     *
     * If the `\{id\}` substring is present in the URI, it must be replaced by
     * clients with the actual token type ID.
     */
    function uri(uint256 id) external view returns (string memory);
}

File 5 of 9 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

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

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 6 of 9 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

File 7 of 9 : ERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 8 of 9 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

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

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

File 9 of 9 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

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

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 2022
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

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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":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"uri","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"}]

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

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-----Decoded View---------------
Arg [0] : nameArg (string): Satoshi Island Land NFT Deeds
Arg [1] : symbolArg (string): SILD
Arg [2] : uriArg (string): ipfs://QmU57YzB11KwXzFyrYRqBSMBveUTSEDoute8VqoK4cVNRV/{id}
Arg [3] : receiver (address): 0x928338ccB9Ebd60A11241D2Cf7F21e4dCa81dFc1
Arg [4] : amounts (uint256[]): 5140,700,3860,3500,3400,240,1680
Arg [5] : deedsLinks (string[]): ipfs://QmaRyGdoeDAgs4q233WMVhnedDswgmDHbrNyK9cJkt5Z2u,ipfs://QmUSMhy5A6dw2Ka4HUtRBUUP9ku1NrfEew46gQdvP3RYah,ipfs://QmaGgGjN7WYVEmrYceYqXKkszFmYL6fyzWDkdqVtNAReUT,ipfs://QmckNRtCjMGUuHwWMTRBQsVeTH8vsnWqXigdyuPRNb2PU4,ipfs://QmcuYLSZUUHbxj2YYjLxvJPoNP4mvudpfhBHCV58xGjHbb,ipfs://QmQj5snVDb39xtkoDRkh5bAT4svegCG8ZcDZBb7ARHRddv,ipfs://Qmc3ySy2M7YaQeEgVtMx8REos6WQF6sahueTeFLoGQiux6

-----Encoded View---------------
50 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [3] : 000000000000000000000000928338ccb9ebd60a11241d2cf7f21e4dca81dfc1
Arg [4] : 00000000000000000000000000000000000000000000000000000000000001a0
Arg [5] : 00000000000000000000000000000000000000000000000000000000000002a0
Arg [6] : 000000000000000000000000000000000000000000000000000000000000001d
Arg [7] : 5361746f7368692049736c616e64204c616e64204e4654204465656473000000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [9] : 53494c4400000000000000000000000000000000000000000000000000000000
Arg [10] : 000000000000000000000000000000000000000000000000000000000000003a
Arg [11] : 697066733a2f2f516d553537597a4231314b77587a46797259527142534d4276
Arg [12] : 6555545345446f7574653856716f4b3463564e52562f7b69647d000000000000
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000007
Arg [14] : 0000000000000000000000000000000000000000000000000000000000001414
Arg [15] : 00000000000000000000000000000000000000000000000000000000000002bc
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000f14
Arg [17] : 0000000000000000000000000000000000000000000000000000000000000dac
Arg [18] : 0000000000000000000000000000000000000000000000000000000000000d48
Arg [19] : 00000000000000000000000000000000000000000000000000000000000000f0
Arg [20] : 0000000000000000000000000000000000000000000000000000000000000690
Arg [21] : 0000000000000000000000000000000000000000000000000000000000000007
Arg [22] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [23] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [24] : 00000000000000000000000000000000000000000000000000000000000001a0
Arg [25] : 0000000000000000000000000000000000000000000000000000000000000200
Arg [26] : 0000000000000000000000000000000000000000000000000000000000000260
Arg [27] : 00000000000000000000000000000000000000000000000000000000000002c0
Arg [28] : 0000000000000000000000000000000000000000000000000000000000000320
Arg [29] : 0000000000000000000000000000000000000000000000000000000000000035
Arg [30] : 697066733a2f2f516d61527947646f65444167733471323333574d56686e6564
Arg [31] : 447377676d444862724e794b39634a6b74355a32750000000000000000000000
Arg [32] : 0000000000000000000000000000000000000000000000000000000000000035
Arg [33] : 697066733a2f2f516d55534d68793541366477324b6134485574524255555039
Arg [34] : 6b75314e72664565773436675164765033525961680000000000000000000000
Arg [35] : 0000000000000000000000000000000000000000000000000000000000000035
Arg [36] : 697066733a2f2f516d614767476a4e37575956456d725963655971584b6b737a
Arg [37] : 466d594c3666797a57446b647156744e41526555540000000000000000000000
Arg [38] : 0000000000000000000000000000000000000000000000000000000000000035
Arg [39] : 697066733a2f2f516d636b4e5274436a4d4755754877574d5452425173566554
Arg [40] : 483876736e577158696764797550524e62325055340000000000000000000000
Arg [41] : 0000000000000000000000000000000000000000000000000000000000000035
Arg [42] : 697066733a2f2f516d6375594c535a55554862786a3259596a4c78764a506f4e
Arg [43] : 50346d76756470666842484356353878476a4862620000000000000000000000
Arg [44] : 0000000000000000000000000000000000000000000000000000000000000035
Arg [45] : 697066733a2f2f516d516a35736e564462333978746b6f44526b683562415434
Arg [46] : 737665674347385a63445a426237415248526464760000000000000000000000
Arg [47] : 0000000000000000000000000000000000000000000000000000000000000035
Arg [48] : 697066733a2f2f516d6333795379324d3759615165456756744d783852456f73
Arg [49] : 365751463673616875655465464c6f4751697578360000000000000000000000


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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.