Address Contract Verified
Address
0xb2a192bFF3fe6edBbb1f663624421b2C1144D900
Balance
0 ETH
Nonce
1
Code Size
5205 bytes
Creator
0x4f125e83...936c at tx 0x964e096c...a4d652
Indexed Transactions
0 (1 on-chain, 0.9% indexed)
Contract Bytecode
5205 bytes
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Verified Source Code Full Match
Compiler: v0.8.0+commit.c7dfd78e
EVM: istanbul
Optimization: No
PBLCTreasureMultiClaim.sol 154 lines
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* PBLC Treasure Contract - Modified for Multiple Claims
*
* Allows unlimited claims of the same NFT type
* Each claim still requires valid signature from admin
* Players can collect multiple NFTs of same type from different locations
*/
contract PBLCTreasureMultiClaim {
address public owner;
address public signer; // Address that signs claim requests
address public nftContract; // Rarible or any ERC721/ERC1155 contract
// Events
event RewardClaimed(
address indexed player,
uint256 indexed tokenId,
uint256 lat,
uint256 lng,
uint256 timestamp
);
event SignerUpdated(address newSigner);
event NFTContractUpdated(address newNFTContract);
modifier onlyOwner() {
require(msg.sender == owner, "Not owner");
_;
}
constructor(address _signer, address _nftContract) {
owner = msg.sender;
signer = _signer;
nftContract = _nftContract;
}
/**
* @notice Claim an NFT reward
* @param tokenId The NFT token ID to claim
* @param lat Latitude multiplied by 1e6 (for precision)
* @param lng Longitude multiplied by 1e6 (for precision)
* @param v Signature v value
* @param r Signature r value
* @param s Signature s value
*/
function claimReward(
uint256 tokenId,
uint256 lat,
uint256 lng,
uint8 v,
bytes32 r,
bytes32 s
) external {
// Verify signature
bytes32 messageHash = keccak256(abi.encodePacked(tokenId, lat, lng));
bytes32 ethSignedMessageHash = keccak256(
abi.encodePacked("\x19Ethereum Signed Message:\n32", messageHash)
);
address recoveredSigner = ecrecover(ethSignedMessageHash, v, r, s);
require(recoveredSigner == signer, "Invalid signature");
// Transfer NFT from admin to player
// Works with ERC721 and ERC1155
(bool success, ) = nftContract.call(
abi.encodeWithSelector(
bytes4(keccak256("safeTransferFrom(address,address,uint256)")),
owner,
msg.sender,
tokenId
)
);
if (!success) {
// Try ERC1155 transfer
(success, ) = nftContract.call(
abi.encodeWithSelector(
bytes4(keccak256("safeTransferFrom(address,address,uint256,uint256,bytes)")),
owner,
msg.sender,
tokenId,
1,
""
)
);
}
require(success, "NFT transfer failed");
emit RewardClaimed(msg.sender, tokenId, lat, lng, block.timestamp);
}
/**
* @notice Update the signer address
*/
function setSigner(address _signer) external onlyOwner {
signer = _signer;
emit SignerUpdated(_signer);
}
/**
* @notice Update the NFT contract address
*/
function setNFTContract(address _nftContract) external onlyOwner {
nftContract = _nftContract;
emit NFTContractUpdated(_nftContract);
}
/**
* @notice Check if admin has approved this contract to spend NFTs
*/
function checkApproval(uint256 tokenId) external view returns (bool) {
(bool success, bytes memory result) = nftContract.staticcall(
abi.encodeWithSelector(
bytes4(keccak256("getApproved(uint256)")),
tokenId
)
);
if (success && result.length >= 32) {
address approved = abi.decode(result, (address));
return approved == address(this);
}
// Try ERC1155 isApprovedForAll
(success, result) = nftContract.staticcall(
abi.encodeWithSelector(
bytes4(keccak256("isApprovedForAll(address,address)")),
owner,
address(this)
)
);
if (success && result.length >= 32) {
return abi.decode(result, (bool));
}
return false;
}
/**
* @notice Allow owner to withdraw any ETH accidentally sent
*/
function withdraw() external onlyOwner {
payable(owner).transfer(address(this).balance);
}
// Allow contract to receive ETH
receive() external payable {}
}
Read Contract
checkApproval 0xfea21ce5 → bool
nftContract 0xd56d229d → address
owner 0x8da5cb5b → address
signer 0x238ac933 → address
Write Contract 4 functions
These functions modify contract state and require a wallet transaction to execute.
claimReward 0x8bbb9188
uint256 tokenId
uint256 lat
uint256 lng
uint8 v
bytes32 r
bytes32 s
setNFTContract 0xa7ccabdf
address _nftContract
setSigner 0x6c19e783
address _signer
withdraw 0x3ccfd60b
No parameters
Recent Transactions
This address has 1 on-chain transactions, but only 0.9% of the chain is indexed. Transactions will appear as indexing progresses. View on Etherscan →