Contract 0xce761D788DF608BD21bdd59d6f4B54b2e27F25Bb 17

Gaming 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x1c7f55ba9d9955f03a618a53759aa614068ae076bbdba01f5a8962f2b28db3a4Adventure385914942022-05-19 14:52:1057 mins ago0x29429dbbd21f47e80995f3d59a3c079e56c9ff8e IN  Rarity0 FTM0.009159308742
0xb7f03864e5fe7146a6920803b60ad277703438fe03da886c206ab14eca8095ceAdventure385891642022-05-19 14:07:531 hr 41 mins ago0xff0791e8c300a964ffc470e206bda307926ff780 IN  Rarity0 FTM0.009353358193
0x6d2a38f81dff148ee87ce70b0506fa2638bc7908677c2bc9821cfb782876fafaAdventure385891502022-05-19 14:07:311 hr 41 mins ago0xff0791e8c300a964ffc470e206bda307926ff780 IN  Rarity0 FTM0.009356702187
0xd00175190b862ff8c2aab22130b640cdfc2284eab5dd4744cc0e8fe07ee53a52Adventure385888242022-05-19 14:00:021 hr 49 mins ago0x89306d8f128c6d0754371269aafa357e987775f1 IN  Rarity0 FTM0.006667335725
0xc89088af163902343529e50cb5d45db63237ce6e1d1a57d5be9afa78fafc48bbAdventure385887542022-05-19 13:58:131 hr 50 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.006674603383
0xe08abda2f2279f9113e7b0920dda00671e7d9a08b25592d0b863b523d2eb7cb5Adventure385886912022-05-19 13:57:061 hr 52 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.006433339078
0x15218eef3b0b8f52938448ec73df14fa6ee48523528a66a9607aeec1ea18f380Adventure385886602022-05-19 13:56:221 hr 52 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.006538516025
0x6f124b336a2d8ef2ae81d6e14d005dc0dd7d20ed3fa0804b6570c89a4d247653Adventure385886272022-05-19 13:55:481 hr 53 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.006324580565
0x09afc8dc30a4980b9c7c62bdda9b5c2c2591edd351ed1bbfd4f530da39aa4391Adventure385886092022-05-19 13:55:241 hr 53 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.006168430958
0x13c561b127964a9cfd7b527d60360c4044dabd6ed48db1859e01adf495502289Adventure385885592022-05-19 13:54:181 hr 54 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.006572576117
0x1206c2fb7cf5641bab784f98de3ef218d312fbcdb2caca161672c1ed232d1e2eAdventure385884942022-05-19 13:52:551 hr 56 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.006501498605
0x568466ec7c9d3e33f85da8e175cf8630f826ddb30434e82557267a9b64b901b6Adventure385884662022-05-19 13:52:161 hr 56 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.006553715837
0x0d5f29bebde3114828cfae9decbd1612f2d3fd60a9b0523e5dbb47866d3d38d7Adventure385876232022-05-19 13:36:072 hrs 13 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.006850270022
0xd596b515eafdb178629059f3e9666b98561b87c9c87a65fb7ca99ca1d0b94073Adventure385869292022-05-19 13:24:142 hrs 24 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.008575497936
0x13c9ec5816589d4435b7f31a126db97e92a869f69400c424b1d7458ba239697aLevel_up385868112022-05-19 13:22:182 hrs 26 mins ago0x330ca0573a6a9882e03091d29e0796642a899b48 IN  Rarity0 FTM0.010106638573
0x60e20612f6b69c7afa77a010a4682696f0d5fcd67a68420966446895a0652e19Level_up385868112022-05-19 13:22:182 hrs 26 mins ago0x330ca0573a6a9882e03091d29e0796642a899b48 IN  Rarity0 FTM0.010111523545
0x4b04c5614b564cec9c3dcaa8aac7c25a3aebf324c57eba33f8e7aed7422f6286Level_up385868082022-05-19 13:22:152 hrs 26 mins ago0x330ca0573a6a9882e03091d29e0796642a899b48 IN  Rarity0 FTM0.01009663601
0xae68ddbac03530e8a971d6a76e1fab714511f76b48f2e24862397c528de58a97Level_up385868052022-05-19 13:22:122 hrs 26 mins ago0x330ca0573a6a9882e03091d29e0796642a899b48 IN  Rarity0 FTM0.010100065116
0x717601cedfd7677e4ac5ccc1d05967a7d02d66796330241f817b9c7a5ef941dfLevel_up385868032022-05-19 13:22:112 hrs 27 mins ago0x330ca0573a6a9882e03091d29e0796642a899b48 IN  Rarity0 FTM0.010104653301
0x7850717d9bf083f2fcfb923e7b129713eabc29c18248a3cbced99f130a9ffe22Level_up385868012022-05-19 13:22:092 hrs 27 mins ago0x330ca0573a6a9882e03091d29e0796642a899b48 IN  Rarity0 FTM0.010108984803
0x171d6e49bf54e15dfe2d3d916ace05d741a3315d0d135e46c35f55e6256f88bcLevel_up385867992022-05-19 13:22:072 hrs 27 mins ago0x330ca0573a6a9882e03091d29e0796642a899b48 IN  Rarity0 FTM0.010114306936
0xd51ee653ffe8f2ad93328adc2e47351cb80d6a33d72782336318c8968b3fe15aLevel_up385867982022-05-19 13:22:062 hrs 27 mins ago0x330ca0573a6a9882e03091d29e0796642a899b48 IN  Rarity0 FTM0.010121076914
0x310a0f28d324e9609a4fe4235f6258ffe315bb8e4c08722cfb0017285f513d36Level_up385867962022-05-19 13:22:032 hrs 27 mins ago0x330ca0573a6a9882e03091d29e0796642a899b48 IN  Rarity0 FTM0.010125709215
0xf83410b9aac42d49dacebaa145885b34e1c5e416c625e6ffd6fa8f27feebc387Adventure385867832022-05-19 13:21:482 hrs 27 mins ago0x0485ef42ffe61e81c842aa052a2b96d8b3d61bdb IN  Rarity0 FTM0.008778273624
0x35b6f606e3f1ddf68aea557e7978d439e014ffa8005842a84ec2a7534d223365Adventure385867792022-05-19 13:21:432 hrs 27 mins ago0x9b670ad03b68534fbfb376ee5ad72ebc43c832af IN  Rarity0 FTM0.01068963626
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OVERVIEW

An NFT-based game created by Andre Cronje.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xd1d5ef186c0abab833789f39f79953dfac1dc13937922faba8e84080613b23a2339254262022-03-20 11:39:3960 days 4 hrs ago 0x2eca72e0578e6c82fd453638747b9323f70fa35e Rarity4.95297860429693 FTM
0x3fb2024ea882e8c92b3837f35cbdf2a8a321cd0e7c4fe9c5c3acf6b6499ba0bd313231242022-02-18 11:38:2490 days 4 hrs ago 0xebf4fbb9c81b84dd5cf89bc75588e5d0018501b3 Rarity10.09 FTM
0x61426752991e458baa7891237b73f29273cc9d91450b85a5b80d487acb2b3a74296849802022-02-01 13:15:20107 days 2 hrs ago 0xd4f02a1c94706b8b9123f2be11125bff772ac4f0 Rarity5 FTM
0x2a419960373a6b9e36889f2ec2af5b18c9d44b420885eedd2dba0ea15c04d87a295933922022-01-31 15:35:15108 days 13 mins ago 0xd4f02a1c94706b8b9123f2be11125bff772ac4f0 Rarity5 FTM
0x2170ebb1d8cdc450733eb259aec7e6b6e7d83663eb6dd0a8adda03db24b96d11291778582022-01-27 9:13:52112 days 6 hrs ago 0x65a29f9dd18af142b3d5c87791e9daee609bb0e5 Rarity5 FTM
0xdd5804a046cc4a032bd1b33c7c50a09ec5a7a722fa61bb92c3659e9ea0acbee4281204542022-01-16 8:36:20123 days 7 hrs ago 0xf6242790a977bae64920246b8a585fd8ad41242d Rarity0.2 FTM
0xe2fa2d2e24e3bdbac23876916b6ff8c30dda10d1abe92247080eba194017a1fc244441972021-12-09 10:24:03161 days 5 hrs ago 0x6343dcb7b20f030341f2f8e23386ff606b3dbd0b Rarity1 FTM
0x972ac3212f5e8a70cc4126e76f74c9418a26e455539ede47e3c71f7b35196b9e243704262021-12-08 16:38:56161 days 23 hrs ago 0xebf4fbb9c81b84dd5cf89bc75588e5d0018501b3 Rarity115.874 FTM
0x0c1227a4854b2fd723d32f928fea225944de1e1e3e56cac70cbf83d92ba183a8235602932021-11-30 9:01:06170 days 6 hrs ago 0x8d86db6776639f3c69b3ee900907d7bb8a6bcb56 Rarity2 FTM
0x43a7c24b45251441b9478b2e4f8eb48297a66f82d77b3c1eae279c36b92c2a34232651232021-11-27 8:18:37173 days 7 hrs ago 0x8d86db6776639f3c69b3ee900907d7bb8a6bcb56 Rarity2 FTM
0xc95b76e1494da771e2680614be0c826bbd2821f2d627e1fa34bbfb4f71be4e86232638242021-11-27 7:59:02173 days 7 hrs ago 0x8d86db6776639f3c69b3ee900907d7bb8a6bcb56 Rarity2 FTM
0x1bd2a71af3b57655cfa905b7f5c6c54ef738e411a9853dccf7f2917845b33437231035542021-11-25 16:19:50174 days 23 hrs ago 0x8d86db6776639f3c69b3ee900907d7bb8a6bcb56 Rarity2 FTM
0x08477cf6c629ee9430723648919d681b2d2c98e29842074d0864628392bf4eb8230893942021-11-25 12:47:15175 days 3 hrs ago 0x8d86db6776639f3c69b3ee900907d7bb8a6bcb56 Rarity2 FTM
0x6c4355b383f7abc5b38a4443d56efc4827e4511c0bb988c84d02b40ff4087a1c230892492021-11-25 12:45:21175 days 3 hrs ago 0x8d86db6776639f3c69b3ee900907d7bb8a6bcb56 Rarity2 FTM
0x81faa5474d8b56977fadb938604b489f622ad3bcf8c56b689668e4326334892f230891492021-11-25 12:43:39175 days 3 hrs ago 0x8d86db6776639f3c69b3ee900907d7bb8a6bcb56 Rarity2 FTM
0x56a5b3a2748c055c9bef404695044682249a88722443d5858997e7709127df86219642012021-11-13 21:12:45186 days 18 hrs ago 0xa00810dee91919feb293b0af23b19a208488789e Rarity1.257758351127954777 FTM
0x4085516eab9f163528e896a5ba515e03d8e7f666374a15ade495abda7c08ba4c219507472021-11-13 18:01:44186 days 21 hrs ago 0xebf4fbb9c81b84dd5cf89bc75588e5d0018501b3 Rarity4.83065157 FTM
0x5d97d9ab5e175df4a8f5af211b4067ead1816e57bfc78762aa3301eae29fa494219332062021-11-13 13:25:07187 days 2 hrs ago 0xd2bf02132ace5a7fbac9622de760cd91e1a7e8eb Rarity0.2 FTM
0xff4acf927b7bf269b1b82464d8c20b92e95faeb7741a72e470d73259c6d5804e219330722021-11-13 13:23:04187 days 2 hrs ago 0xd2bf02132ace5a7fbac9622de760cd91e1a7e8eb Rarity0.2 FTM
0x5fb06b7fc1df78351c8c5bec92d67d37008f7c52c8edc8dd02cb647e2df1c58a202103302021-10-27 1:36:11204 days 14 hrs ago 0x7f69d10a69fee6050b4a6ae0531c11585bbe3af7 Rarity6.1284636572479 FTM
0x519b9bd7b590b79aa151ba8c1eb57589f66bb8330bf07433518eb26d9d46fbd0202102412021-10-27 1:35:00204 days 14 hrs ago 0x7f69d10a69fee6050b4a6ae0531c11585bbe3af7 Rarity6.1345851551479 FTM
0x3396da467fbacd54938308d4ae0bdd408d19dd350aabb567fbf1092d44b45de3193286752021-10-17 12:00:00214 days 3 hrs ago 0x6c8ade549c4295352b98bc5ba63b179568e33f0f Rarity8 FTM
0x0435580e6d9fc06a6d789e16561819e87b00de4188d6f5977f6e962a65505cd5191617232021-10-15 13:38:17216 days 2 hrs ago 0x59321b67604045a8ad18189ba3c3852174282df5 Rarity14.987360753353735131 FTM
0xd5a8e0cf7aa317a8de709a28483de460981c73fa94c0205fbd1bd63e30a5c182190781102021-10-14 13:13:07217 days 2 hrs ago 0x8438492bbae3deef0a46c4a42557c3c6116ec5fa Rarity0.0001363851 FTM
0x9dfc71d3e0d35b72fc669e1bc6d6dbd314de5ed77548c359c3fb286f3b733f2e190358482021-10-13 23:52:36217 days 15 hrs ago 0x6c8ade549c4295352b98bc5ba63b179568e33f0f Rarity10 FTM
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Contract Source Code Verified (Exact Match)

Contract Name:
rarity

Compiler Version
v0.8.7+commit.e28d00a7

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, GNU LGPLv3 license

Contract Source Code (Solidity)

/**
 *Submitted for verification at FtmScan.com on 2021-09-05
*/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

interface IERC721 {
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
    function balanceOf(address owner) external view returns (uint256 balance);
    function ownerOf(uint256 tokenId) external view returns (address owner);
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;
    function approve(address to, uint256 tokenId) external;
    function getApproved(uint256 tokenId) external view returns (address operator);
    function setApprovalForAll(address operator, bool _approved) external;
    function isApprovedForAll(address owner, address operator) external view returns (bool);
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

library Strings {
    function toString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }
}

interface IERC721Receiver {
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

contract ERC721 is IERC721 {
    using Strings for uint256;

    mapping(uint256 => address) private _owners;
    mapping(address => uint256) private _balances;
    mapping(uint256 => address) private _tokenApprovals;
    mapping(address => mapping(address => bool)) private _operatorApprovals;
    
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }
    
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        return owner;
    }
    
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }
    
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            msg.sender == owner || isApprovedForAll(owner, msg.sender),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }
    
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }
    
    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != msg.sender, "ERC721: approve to caller");

        _operatorApprovals[msg.sender][operator] = approved;
        emit ApprovalForAll(msg.sender, operator, approved);
    }
    
    function _isContract(address account) internal view returns (bool) {
        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }
    
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }
    
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(msg.sender, tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }
    
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        require(_isApprovedOrOwner(msg.sender, tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, _data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (_isContract(to)) {
            try IERC721Receiver(to).onERC721Received(msg.sender, from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721Receiver(to).onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}







/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}


/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _allTokens.length;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual override {
        super._beforeTokenTransfer(from, to, tokenId);

        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

contract rarity is ERC721 {
    uint public next_summoner;
    uint constant xp_per_day = 250e18;
    uint constant DAY = 1 days;
    
    string constant public name = "Rarity Manifested";
    string constant public symbol = "RM";
    
    mapping(uint => uint) public xp;
    mapping(uint => uint) public adventurers_log;
    mapping(uint => uint) public class;
    mapping(uint => uint) public level;
    
    event summoned(address indexed owner, uint class, uint summoner);
    event leveled(address indexed owner, uint level, uint summoner);

    function adventure(uint _summoner) external {
        require(_isApprovedOrOwner(msg.sender, _summoner));
        require(block.timestamp > adventurers_log[_summoner]);
        adventurers_log[_summoner] = block.timestamp + DAY;
        xp[_summoner] += xp_per_day;
    }
    
    function spend_xp(uint _summoner, uint _xp) external {
        require(_isApprovedOrOwner(msg.sender, _summoner));
        xp[_summoner] -= _xp;
    }
    
    function level_up(uint _summoner) external {
        require(_isApprovedOrOwner(msg.sender, _summoner));
        uint _level = level[_summoner];
        uint _xp_required = xp_required(_level);
        xp[_summoner] -= _xp_required;
        level[_summoner] = _level+1;
        emit leveled(msg.sender, _level, _summoner);
    }
    
    function summoner(uint _summoner) external view returns (uint _xp, uint _log, uint _class, uint _level) {
        _xp = xp[_summoner];
        _log = adventurers_log[_summoner];
        _class = class[_summoner];
        _level = level[_summoner];
    }
    
    function summon(uint _class) external {
        require(1 <= _class && _class <= 11);
        uint _next_summoner = next_summoner;
        class[_next_summoner] = _class;
        level[_next_summoner] = 1;
        _safeMint(msg.sender, _next_summoner);
        emit summoned(msg.sender, _class, _next_summoner);
        next_summoner++;
    }
    
    function xp_required(uint curent_level) public pure returns (uint xp_to_next_level) {
        xp_to_next_level = curent_level * 1000e18;
        for (uint i = 1; i < curent_level; i++) {
            xp_to_next_level += i * 1000e18;
        }
    }
    
    function tokenURI(uint256 _summoner) public view returns (string memory) {
        string[7] memory parts;
        parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: white; font-family: serif; font-size: 14px; }</style><rect width="100%" height="100%" fill="black" /><text x="10" y="20" class="base">';

        parts[1] = string(abi.encodePacked("class", " ", classes(class[_summoner])));

        parts[2] = '</text><text x="10" y="40" class="base">';

        parts[3] = string(abi.encodePacked("level", " ", toString(level[_summoner])));

        parts[4] = '</text><text x="10" y="60" class="base">';

        parts[5] = string(abi.encodePacked("xp", " ", toString(xp[_summoner]/1e18)));

        parts[6] = '</text></svg>';

        string memory output = string(abi.encodePacked(parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6]));
        
        string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "summoner #', toString(_summoner), '", "description": "Rarity is achieved via an active economy, summoners must level, gain feats, learn spells, to be able to craft gear. This allows for market driven rarity while allowing an ever growing economy. Feats, spells, and summoner gear is ommitted as part of further expansions.", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}'))));
        output = string(abi.encodePacked('data:application/json;base64,', json));

        return output;
    }
    
    function classes(uint id) public pure returns (string memory description) {
        if (id == 1) {
            return "Barbarian";
        } else if (id == 2) {
            return "Bard";
        } else if (id == 3) {
            return "Cleric";
        } else if (id == 4) {
            return "Druid";
        } else if (id == 5) {
            return "Fighter";
        } else if (id == 6) {
            return "Monk";
        } else if (id == 7) {
            return "Paladin";
        } else if (id == 8) {
            return "Ranger";
        } else if (id == 9) {
            return "Rogue";
        } else if (id == 10) {
            return "Sorcerer";
        } else if (id == 11) {
            return "Wizard";
        }
    }
    
    function toString(uint256 value) internal pure returns (string memory) {
    // Inspired by OraclizeAPI's implementation - MIT license
    // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }
}

/// [MIT License]
/// @title Base64
/// @notice Provides a function for encoding some bytes in base64
/// @author Brecht Devos <[email protected]>
library Base64 {
    bytes internal constant TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    /// @notice Encodes some bytes to the base64 representation
    function encode(bytes memory data) internal pure returns (string memory) {
        uint256 len = data.length;
        if (len == 0) return "";

        // multiply by 4/3 rounded up
        uint256 encodedLen = 4 * ((len + 2) / 3);

        // Add some extra buffer at the end
        bytes memory result = new bytes(encodedLen + 32);

        bytes memory table = TABLE;

        assembly {
            let tablePtr := add(table, 1)
            let resultPtr := add(result, 32)

            for {
                let i := 0
            } lt(i, len) {

            } {
                i := add(i, 3)
                let input := and(mload(add(data, i)), 0xffffff)

                let out := mload(add(tablePtr, and(shr(18, input), 0x3F)))
                out := shl(8, out)
                out := add(out, and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF))
                out := shl(8, out)
                out := add(out, and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF))
                out := shl(8, out)
                out := add(out, and(mload(add(tablePtr, and(input, 0x3F))), 0xFF))
                out := shl(224, out)

                mstore(resultPtr, out)

                resultPtr := add(resultPtr, 4)
            }

            switch mod(len, 3)
            case 1 {
                mstore(sub(resultPtr, 2), shl(240, 0x3d3d))
            }
            case 2 {
                mstore(sub(resultPtr, 1), shl(248, 0x3d))
            }

            mstore(result, encodedLen)
        }

        return string(result);
    }
}

Contract Security Audit

Contract ABI

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Swarm Source

ipfs://11e1f8f26dc82902d166426d6b23655329087056813aa961c66fc77e60ee2194
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Validator ID :
0 FTM

Amount Staked
0

Amount Delegated
0

Staking Total
0

Staking Start Epoch
0

Staking Start Time
0

Proof of Importance
0

Origination Score
0

Validation Score
0

Active
0

Online
0

Downtime
0 s
Address Amount claimed Rewards Created On Epoch Created On
Block Uncle Number Difficulty Gas Used Reward
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