thumb|250px|right|A 16-point compass rose with west highlighted in black West is one of the four cardinal directions or points of the compass. It is the opposite direction from east and is the direct
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 0x2c8d7a302f96eaee5c70fc2bddc4fafa0f717e1b8d9893737b57cd8f769834c9. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3a5d635-cc79-46d7-9fe4-c3fee54f24a7.json and https://artists.proofprofile.net/proofs/artist/d3a5d635-cc79-46d7-9fe4-c3fee54f24a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
quota (but it has ghostington and instrumental)