right|250px|thumb|Taibo statue, Taibo Temple, Wuxi Taibo () (circa 1150 BCE), or Wu Taibo, was the eldest son of King Tai of Zhou and the legendary founder of the State of Wu. His exact birth and deat
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 0x00405961d2373f92e0924cba98d72e5246e1a94c75dbb5b643cd4bcb7fc71b20. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6fed209-c74c-4fcb-baf9-b292e85eea8c.json and https://artists.proofprofile.net/proofs/artist/d6fed209-c74c-4fcb-baf9-b292e85eea8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).