thumb|right|300px|The Conjurer, by Hieronymus Bosch, shows the bending figure looking forward, steadily, intently, and with fixed attention, while the other figures in the painting look in various dir
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 0x2ca02c4daf961f59d372d047a40ccd2b71b0dd9b6cf5fe0e9b02abd36796c250. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05e8b61e-5819-466d-abef-7326509f5bf9.json and https://artists.proofprofile.net/proofs/artist/05e8b61e-5819-466d-abef-7326509f5bf9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).