Detect whether normalized public npm or PyPI package registry state changed since a saved fingerprint. Returns a deterministic SHA-256 fingerprint for package/version existence, latest/resolved version, deprecation or yank state, license and runtime requirement. No dependency graph, vulnerability scan or registry mutation. Base mainnet USDC
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.002000 USDC | 0xf9c2...61Ba |