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 0xa0ad17e908d70587179d41db0c9291a150c5f1e2a9d53c7063292f35374942b2. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fb981a6-1d44-448d-be24-7be3d5d42e80.json and https://artists.proofprofile.net/proofs/artist/9fb981a6-1d44-448d-be24-7be3d5d42e80.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Klangfarben: Der Auftrag zur Liebe (Matthäus 5, 43-44)