thumb|The Italian Navy frigate Carlo Bergamini in 2011 thumb|The Royal Navy frigate HMS Pallas in three positions A frigate () is a type of warship. In different eras, the roles and capabilities o
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae2d9d8a8fedee58d7b3fe3240b74b008514b7be7e6aa7abac32fc387322d35. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cb946ab-881e-44b0-91e0-e11e26b44c2e.json and https://artists.proofprofile.net/proofs/artist/8cb946ab-881e-44b0-91e0-e11e26b44c2e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).