__NOTOC__ Ryal may refer to: Places Ryal, Northumberland, England Currency Rose Ryal, an English gold coin equal to 30 shillings Spur ryal, an English gold coin equal to 15 shillings Zanzibari r
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 0x6d8f95ffa7d2a3383c059c572b67c930c948ba4d8fd9799077a1b1f39dcd6e94. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8ce8dad-d145-4059-85da-b7a7cee163da.json and https://artists.proofprofile.net/proofs/artist/d8ce8dad-d145-4059-85da-b7a7cee163da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).