thumb|Hanley in 2010 Robert Hanley (born June 17, 1947), also known as Broadway Bob. and Bob Hanley, is an American actor, entertainer, comedian, singer, and writer. Hanley has been cast in over 10
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 0xf19a05ce7aa8fc432c6034925b719a7368b4358ac5a2d0223f301a5c164c3eaf. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc2e0056-8692-42c0-982a-54cc483bcdde.json and https://artists.proofprofile.net/proofs/artist/bc2e0056-8692-42c0-982a-54cc483bcdde.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).