ERC-721 NFT Standard KECCAK-256 VERIFIED
WEB3 逆向安全工程 // ERC-721 标准
0x6352211e

Solidity Interface & Canonical Declaration

function ownerOf(uint256 tokenId) external view returns (address)

查询并返回指定 NFT 代币 ID(tokenId)当前的所有者以太坊地址。

理论基础执行 Gas: 2,100 ~ 4,500 gas (view)
返回值类型: address

Calldata 调用数据 ABI 编码布局账本

Calldata Offset Type Parameter Name Semantic Role
0x00 ~ 0x03 (4B) bytes4 Method ID (msg.sig) ownerOf(uint256) 的 4 字节函数选择器
0x04 ~ 0x23 (32B) uint256 tokenId NFT 代币的唯一数字标识符

Keccak-256 密码学哈希推导链

标准 ASCII 签名字符串: ownerOf(uint256)
完整 256 位 Keccak 哈希: 0x6352211e6566aa027e75ac9dbf2423197fbd9b82b9d981a3ab367d355866aa1c
截取前 4 字节 (Big-Endian): 0x6352211e

EVM 运行时调度器汇编代码特征 (Dispatcher Opcodes)

// 1. Load the first 32 bytes of transaction calldata [0x0000] PUSH1 0x00 [0x0002] CALLDATALOAD // 2. Right-shift by 224 bits (0xe0) to isolate the 4-byte selector [0x0003] PUSH1 0xe0 [0x0005] SHR // 3. Match against target selector 0x6352211e and branch [0x0006] DUP1 [0x0007] PUSH4 0x6352211e [0x000c] EQ [0x000d] PUSH2 0x0050 [0x0010] JUMPI // Jump to implementation if matched