Walter G. "Dub" Lamb (December 21, 1920 – January 5, 1991) was an American professional football end who played one season with the Chicago Bears of the National Football League (NFL). He was selected
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9dce640eaeb1b934fa17fe96c449bf8b5596e5885f779a53a7b3e7114ecc8f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89297796-ae43-4769-9d66-bd5cd7ff0714.json and https://artists.proofprofile.net/proofs/artist/89297796-ae43-4769-9d66-bd5cd7ff0714.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).