Bulk Verification Status

Whether a contract’s source is published is an explorer’s record rather than something the chain stores, so this reads what the chain does hold: the CBOR metadata blob Solidity appends, which carries an IPFS hash of the source and the compiler version that produced it. A contract carrying that blob can be matched against a published source; one without has nothing to match at all, which usually means metadata was stripped at compile time or it was not written in Solidity. Proxies are detected from the EIP-1967 slot and flagged separately, because verifying a proxy tells you nothing about the code it actually runs and that code can change after you check it.