Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- VeArtProxy
- Optimization enabled
- true
- Compiler version
- v0.8.13+commit.abaa5c0e
- Optimization runs
- 200
- EVM Version
- default
- Verified at
- 2022-09-16T16:32:30.518960Z
Contract source code
// File: contracts/interfaces/IVeArtProxy.sol
pragma solidity 0.8.13;
interface IVeArtProxy {
function _tokenURI(uint _tokenId, uint _balanceOf, uint _locked_end, uint _value) external pure returns (string memory output);
}
// File: contracts/libraries/Base64.sol
pragma solidity 0.8.13;
/// [MIT License]
/// @title Base64
/// @notice Provides a function for encoding some bytes in base64
/// @author Brecht Devos <brecht@loopring.org>
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) {
uint len = data.length;
if (len == 0) return "";
// multiply by 4/3 rounded up
uint 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);
}
}
// File: contracts/VeArtProxy.sol
pragma solidity 0.8.13;
contract VeArtProxy is IVeArtProxy {
function toString(uint 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";
}
uint temp = value;
uint digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint(value % 10)));
value /= 10;
}
return string(buffer);
}
function _tokenURI(uint _tokenId, uint _balanceOf, uint _locked_end, uint _value) external pure returns (string memory output) {
output = '<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">';
output = string(abi.encodePacked(output, "token ", toString(_tokenId), '</text><text x="10" y="40" class="base">'));
output = string(abi.encodePacked(output, "balanceOf ", toString(_balanceOf), '</text><text x="10" y="60" class="base">'));
output = string(abi.encodePacked(output, "locked_end ", toString(_locked_end), '</text><text x="10" y="80" class="base">'));
output = string(abi.encodePacked(output, "value ", toString(_value), '</text></svg>'));
string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "lock #', toString(_tokenId), '", "description": "Velodrome locks, can be used to boost gauge yields, vote on token emission, and receive bribes", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}'))));
output = string(abi.encodePacked('data:application/json;base64,', json));
}
}
Contract ABI
[{"type":"function","stateMutability":"pure","outputs":[{"type":"string","name":"output","internalType":"string"}],"name":"_tokenURI","inputs":[{"type":"uint256","name":"_tokenId","internalType":"uint256"},{"type":"uint256","name":"_balanceOf","internalType":"uint256"},{"type":"uint256","name":"_locked_end","internalType":"uint256"},{"type":"uint256","name":"_value","internalType":"uint256"}]}]
Contract Creation Code
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ByteCode
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