Greg or Gregory Gibson may refer to: Greg Gibson (wrestler) (born 1953), American wrestler Greg Gibson (umpire) (born 1968), umpire in Major League Baseball Gregory Gibson, American author Gregory Gi
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 0xeea3cf05f9816876a114e4d09790300c27576d1c416d47e6a0584af6a2b92e3a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/686e72c4-2989-40cc-9dd0-a5339e86569c.json and https://artists.proofprofile.net/proofs/artist/686e72c4-2989-40cc-9dd0-a5339e86569c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).