John Allen "Al" Gamble (born March 11, 1969) is an American, Memphis, Tennessee and Birmingham, Alabama based, session musician, playing Hammond B-3 organ and keyboards. He is currently the keyboard p
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 0xb0cf404df20f5c5dbc1ae5a792650615847943a0b8ad13318e07e9b750d45997. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5369c94d-78e9-4337-8385-e9dbaaf146ba.json and https://artists.proofprofile.net/proofs/artist/5369c94d-78e9-4337-8385-e9dbaaf146ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).