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 0x01df04c2abc7cdb3fd0a4c0a5c16d75239b4bd26317d7eedbf5e9cf3449c1e2c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/740ec1b5-aeb2-41b5-abfc-cf7269dbe30d.json and https://artists.proofprofile.net/proofs/artist/740ec1b5-aeb2-41b5-abfc-cf7269dbe30d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flûte de Pan : Mélodies des Andes - Panpipes