thumb|Traditional Tibetan thangka showing the bhavacakra and six realms of saṃsāra in Buddhist cosmology. The Six PathsQuentin Ludwig, Le grand livre du bouddhisme, p. 179 in Buddhist cosmology. are
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 0x1a8e3080e46be42249384a5ed7e2d43e787b3843fc1424061831397a73b38d43. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0001d0f1-c33e-4766-974d-41ea6a326cae.json and https://artists.proofprofile.net/proofs/artist/0001d0f1-c33e-4766-974d-41ea6a326cae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).