Luther Tucker (January 20, 1936 – June 18, 1993) was an American blues guitarist. While soft-spoken and shy, Tucker made his presence known through his unique and clearly recognizable guitar style. T
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 0x6116d2603f81aef900b3c606a387475e140fe1ba41d252a2c38052c0028d7d6f. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6b02b70-da8e-4d13-b264-c4426b6f5dbe.json and https://artists.proofprofile.net/proofs/artist/c6b02b70-da8e-4d13-b264-c4426b6f5dbe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).