Gary Hall may refer to: Gary Hall (academic) (born 1962), professor of media and performing arts Gary Hall (judoka) (born 1990), British judoka Gary Hall (taekwondo), British taekwondo team perfor
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 0xe34d2c856942b1c8e8bb839c0cc51c186cf4e8d4b826ecd953a07806057cea77. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42ca5983-f5e8-47f0-b323-696376748518.json and https://artists.proofprofile.net/proofs/artist/42ca5983-f5e8-47f0-b323-696376748518.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).