{"sources":{"RadarSignals.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity 0.8.24;\n\n/// @title RADAR SIGNALS (SIGNAL)\n/// @notice 2,222 fully on-chain radar signals on BNB Chain. Only wallets holding a\n/// SPACE ID Agent ID (.ai) can mint, and every mint needs a proof of work:\n/// keccak256(abi.encodePacked(address(this), minter, mintedBy[minter], nonce)) must start\n/// with at least 20 zero bits. More zero bits = rarer signal.\n/// First mint per wallet is free (gas only); mints 2 and 3 cost PRICE each. Max 3 per wallet.\n/// Mint opens at MINT_START and closes for good at MINT_END (72 hours later).\n/// No owner, no pause, no setters: price, supply, window and payout are immutable.\ninterface IAgentId {\n function balanceOf(address owner) external view returns (uint256);\n}\n\ninterface IERC721Receiver {\n function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);\n}\n\ncontract RadarSignals {\n string public constant name = \"RADAR SIGNALS\";\n string public constant symbol = \"SIGNAL\";\n uint256 public constant MAX_SUPPLY = 2222;\n uint256 public constant MAX_PER_WALLET = 3;\n uint256 public constant PRICE = 0.0003 ether;\n uint256 public constant MIN_BITS = 20;\n uint256 public constant WINDOW = 72 hours;\n\n IAgentId public immutable agentId;\n address payable public immutable payout;\n uint256 public immutable MINT_START;\n uint256 public immutable MINT_END;\n\n uint256 public totalSupply;\n mapping(address => uint256) public mintedBy;\n mapping(uint256 => bytes32) public signalOf; // proof hash of each token\n\n mapping(uint256 => address) private _owner;\n mapping(address => uint256) private _balance;\n mapping(uint256 => address) private _approved;\n mapping(address => mapping(address => bool)) private _operator;\n\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n event SignalLocked(address indexed minter, uint256 indexed tokenId, uint256 bits);\n\n error NotOpen();\n error Closed();\n error SoldOut();\n error WalletLimit();\n error NoAgentId();\n error WeakProof();\n error WrongPayment();\n error NotAuthorized();\n error NonexistentToken();\n error ZeroAddress();\n error UnsafeRecipient();\n error PayoutFailed();\n\n constructor(address agentId_, address payable payout_, uint256 mintStart_) {\n if (agentId_ == address(0) || payout_ == address(0)) revert ZeroAddress();\n agentId = IAgentId(agentId_);\n payout = payout_;\n MINT_START = mintStart_;\n MINT_END = mintStart_ + WINDOW;\n }\n\n // ---------------------------------------------------------------- mint\n\n /// The proof is bound to this contract, the minter and how many the minter already has,\n /// so a solution cannot be reused or copied by another wallet.\n function proofHash(address minter, uint256 nonce) public view returns (bytes32) {\n return keccak256(abi.encodePacked(address(this), minter, mintedBy[minter], nonce));\n }\n\n function leadingZeroBits(bytes32 h) public pure returns (uint256 n) {\n uint256 x = uint256(h);\n if (x == 0) return 256;\n while (x & (1 << 255) == 0) {\n x <<= 1;\n unchecked { ++n; }\n }\n }\n\n function priceFor(address wallet) public view returns (uint256) {\n return mintedBy[wallet] == 0 ? 0 : PRICE;\n }\n\n /// @param nonce any number that makes proofHash(msg.sender, nonce) start with >= MIN_BITS zero bits\n function mint(uint256 nonce) external payable returns (uint256 tokenId) {\n if (block.timestamp < MINT_START) revert NotOpen();\n if (block.timestamp >= MINT_END) revert Closed();\n if (totalSupply >= MAX_SUPPLY) revert SoldOut();\n uint256 done = mintedBy[msg.sender];\n if (done >= MAX_PER_WALLET) revert WalletLimit();\n if (agentId.balanceOf(msg.sender) == 0) revert NoAgentId();\n\n bytes32 h = proofHash(msg.sender, nonce);\n uint256 bits = leadingZeroBits(h);\n if (bits < MIN_BITS) revert WeakProof();\n\n uint256 cost = done == 0 ? 0 : PRICE;\n if (msg.value != cost) revert WrongPayment();\n\n mintedBy[msg.sender] = done + 1;\n tokenId = ++totalSupply;\n signalOf[tokenId] = h;\n _owner[tokenId] = msg.sender;\n unchecked { ++_balance[msg.sender]; }\n emit Transfer(address(0), msg.sender, tokenId);\n emit SignalLocked(msg.sender, tokenId, bits);\n\n if (cost != 0) {\n (bool ok, ) = payout.call{value: cost}(\"\");\n if (!ok) revert PayoutFailed();\n }\n }\n\n // ---------------------------------------------------------------- traits\n\n function rarityOf(uint256 tokenId) public view returns (string memory) {\n uint256 b = leadingZeroBits(_signal(tokenId));\n if (b >= 26) return \"Legendary\";\n if (b >= 24) return \"Epic\";\n if (b >= 22) return \"Rare\";\n return \"Common\";\n }\n\n function _signal(uint256 tokenId) internal view returns (bytes32 h) {\n h = signalOf[tokenId];\n if (h == bytes32(0)) revert NonexistentToken();\n }\n\n function _color(uint256 b) internal pure returns (string memory) {\n if (b >= 26) return \"#FFD54A\";\n if (b >= 24) return \"#C06BFF\";\n if (b >= 22) return \"#3FE0FF\";\n return \"#39FF7A\";\n }\n\n function _orbit(uint256 v) internal pure returns (string memory) {\n uint256 i = v % 4;\n if (i == 0) return \"LEO\";\n if (i == 1) return \"MEO\";\n if (i == 2) return \"GEO\";\n return \"HEO\";\n }\n\n function tokenURI(uint256 tokenId) external view returns (string memory) {\n bytes32 h = _signal(tokenId);\n string memory json = string.concat(\n '{\"name\":\"RADAR SIGNAL #', _u(tokenId),\n '\",\"description\":\"A radar signal locked on-chain by an AI agent with proof of work on BNB Chain.\",\"attributes\":', _attrs(tokenId, h),\n ',\"image\":\"data:image/svg+xml;base64,', _b64(bytes(_svg(tokenId, h))), '\"}'\n );\n return string.concat(\"data:application/json;base64,\", _b64(bytes(json)));\n }\n\n function _freq(uint256 s) internal pure returns (string memory) {\n uint256 f = 1000 + (s % 9000); // 100.0 - 999.9 MHz\n return string.concat(_u(f / 10), \".\", _u(f % 10));\n }\n\n function _attrs(uint256 tokenId, bytes32 h) internal view returns (string memory) {\n uint256 s = uint256(h);\n string memory a = string.concat(\n '[{\"trait_type\":\"Rarity\",\"value\":\"', rarityOf(tokenId),\n '\"},{\"trait_type\":\"Lock Bits\",\"value\":', _u(leadingZeroBits(h)), '}'\n );\n return string.concat(\n a, ',{\"trait_type\":\"Frequency\",\"value\":\"', _freq(s), ' MHz\"},{\"trait_type\":\"Orbit\",\"value\":\"', _orbit(s >> 40),\n '\"},{\"trait_type\":\"Blips\",\"value\":', _u(1 + ((s >> 16) % 5)), '}]'\n );\n }\n\n function _svg(uint256 tokenId, bytes32 h) internal pure returns (string memory) {\n uint256 b = leadingZeroBits(h);\n uint256 s = uint256(h);\n string memory col = _color(b);\n string memory head = string.concat(\n '');\n }\n\n function _sweep(uint256 s, string memory col) internal pure returns (string memory) {\n uint256 ang = (s >> 64) % 360;\n return string.concat(\n ''\n );\n }\n\n function _blips(uint256 s, uint256 n, string memory col) internal pure returns (string memory out) {\n for (uint256 i = 0; i < n; i++) {\n uint256 r = uint256(keccak256(abi.encode(s, i)));\n uint256 x = 60 + (r % 200);\n uint256 y = 60 + ((r >> 32) % 200);\n out = string.concat(out, '> 64) % 4)), '\" fill=\"', col, '\"/>');\n }\n }\n\n function _u(uint256 v) internal pure returns (string memory) {\n if (v == 0) return \"0\";\n uint256 j = v;\n uint256 len;\n while (j != 0) { len++; j /= 10; }\n bytes memory b = new bytes(len);\n while (v != 0) { len--; b[len] = bytes1(uint8(48 + (v % 10))); v /= 10; }\n return string(b);\n }\n\n function _b64(bytes memory data) internal pure returns (string memory) {\n if (data.length == 0) return \"\";\n string memory table = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n string memory result = new string(4 * ((data.length + 2) / 3));\n assembly {\n let tablePtr := add(table, 1)\n let resultPtr := add(result, 32)\n let dataPtr := data\n let endPtr := add(data, mload(data))\n for {} lt(dataPtr, endPtr) {} {\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1)\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1)\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1)\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1)\n }\n switch mod(mload(data), 3)\n case 1 { mstore8(sub(resultPtr, 1), 0x3d) mstore8(sub(resultPtr, 2), 0x3d) }\n case 2 { mstore8(sub(resultPtr, 1), 0x3d) }\n }\n return result;\n }\n\n // ---------------------------------------------------------------- ERC721\n\n function supportsInterface(bytes4 id) external pure returns (bool) {\n return id == 0x01ffc9a7 || id == 0x80ac58cd || id == 0x5b5e139f;\n }\n\n function balanceOf(address owner) external view returns (uint256) {\n if (owner == address(0)) revert ZeroAddress();\n return _balance[owner];\n }\n\n function ownerOf(uint256 tokenId) public view returns (address o) {\n o = _owner[tokenId];\n if (o == address(0)) revert NonexistentToken();\n }\n\n function approve(address to, uint256 tokenId) external {\n address o = ownerOf(tokenId);\n if (msg.sender != o && !_operator[o][msg.sender]) revert NotAuthorized();\n _approved[tokenId] = to;\n emit Approval(o, to, tokenId);\n }\n\n function getApproved(uint256 tokenId) external view returns (address) {\n ownerOf(tokenId);\n return _approved[tokenId];\n }\n\n function setApprovalForAll(address operator, bool approved) external {\n _operator[msg.sender][operator] = approved;\n emit ApprovalForAll(msg.sender, operator, approved);\n }\n\n function isApprovedForAll(address owner, address operator) external view returns (bool) {\n return _operator[owner][operator];\n }\n\n function transferFrom(address from, address to, uint256 tokenId) public {\n address o = ownerOf(tokenId);\n if (o != from) revert NotAuthorized();\n if (to == address(0)) revert ZeroAddress();\n if (msg.sender != o && !_operator[o][msg.sender] && _approved[tokenId] != msg.sender) revert NotAuthorized();\n delete _approved[tokenId];\n unchecked { --_balance[from]; ++_balance[to]; }\n _owner[tokenId] = to;\n emit Transfer(from, to, tokenId);\n }\n\n function safeTransferFrom(address from, address to, uint256 tokenId) external {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public {\n transferFrom(from, to, tokenId);\n if (to.code.length != 0 &&\n IERC721Receiver(to).onERC721Received(msg.sender, from, tokenId, data) != IERC721Receiver.onERC721Received.selector)\n revert UnsafeRecipient();\n }\n}\n"}},"abi":[{"type":"constructor","inputs":[{"name":"agentId_","type":"address","internalType":"address"},{"name":"payout_","type":"address","internalType":"address payable"},{"name":"mintStart_","type":"uint256","internalType":"uint256"}],"stateMutability":"nonpayable"},{"name":"Closed","type":"error","inputs":[]},{"name":"NoAgentId","type":"error","inputs":[]},{"name":"NonexistentToken","type":"error","inputs":[]},{"name":"NotAuthorized","type":"error","inputs":[]},{"name":"NotOpen","type":"error","inputs":[]},{"name":"PayoutFailed","type":"error","inputs":[]},{"name":"SoldOut","type":"error","inputs":[]},{"name":"UnsafeRecipient","type":"error","inputs":[]},{"name":"WalletLimit","type":"error","inputs":[]},{"name":"WeakProof","type":"error","inputs":[]},{"name":"WrongPayment","type":"error","inputs":[]},{"name":"ZeroAddress","type":"error","inputs":[]},{"name":"Approval","type":"event","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"name":"ApprovalForAll","type":"event","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"name":"SignalLocked","type":"event","inputs":[{"name":"minter","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"},{"name":"bits","type":"uint256","indexed":false,"internalType":"uint256"}],"anonymous":false},{"name":"Transfer","type":"event","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"name":"MAX_PER_WALLET","type":"function","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"MAX_SUPPLY","type":"function","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"MINT_END","type":"function","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"MINT_START","type":"function","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"MIN_BITS","type":"function","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"PRICE","type":"function","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"WINDOW","type":"function","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"agentId","type":"function","inputs":[],"outputs":[{"name":"","type":"address","internalType":"contract IAgentId"}],"stateMutability":"view"},{"name":"approve","type":"function","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"name":"balanceOf","type":"function","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"getApproved","type":"function","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"name":"isApprovedForAll","type":"function","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"name":"leadingZeroBits","type":"function","inputs":[{"name":"h","type":"bytes32","internalType":"bytes32"}],"outputs":[{"name":"n","type":"uint256","internalType":"uint256"}],"stateMutability":"pure"},{"name":"mint","type":"function","inputs":[{"name":"nonce","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"stateMutability":"payable"},{"name":"mintedBy","type":"function","inputs":[{"name":"","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"name","type":"function","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"name":"ownerOf","type":"function","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"o","type":"address","internalType":"address"}],"stateMutability":"view"},{"name":"payout","type":"function","inputs":[],"outputs":[{"name":"","type":"address","internalType":"address payable"}],"stateMutability":"view"},{"name":"priceFor","type":"function","inputs":[{"name":"wallet","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"proofHash","type":"function","inputs":[{"name":"minter","type":"address","internalType":"address"},{"name":"nonce","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"bytes32","internalType":"bytes32"}],"stateMutability":"view"},{"name":"rarityOf","type":"function","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"name":"safeTransferFrom","type":"function","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"name":"safeTransferFrom","type":"function","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"name":"setApprovalForAll","type":"function","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"name":"signalOf","type":"function","inputs":[{"name":"","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"bytes32","internalType":"bytes32"}],"stateMutability":"view"},{"name":"supportsInterface","type":"function","inputs":[{"name":"id","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"pure"},{"name":"symbol","type":"function","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"name":"tokenURI","type":"function","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"name":"totalSupply","type":"function","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"name":"transferFrom","type":"function","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"}],"matchId":"58053025","creationMatch":"exact_match","runtimeMatch":"exact_match","verifiedAt":"2026-11-02T08:11:38Z","match":"exact_match","chainId":"56","address":"0x6Bb421E8ef7f62F3DD1076b48FBa15441506251d"}