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 0xf166aebcb0c66e7f3a52bfab9098a2b104e4ec7a14ff81fac7e411b3f2970b95. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcc9dcf3-1f81-48be-988e-9e4ccca7f3bb.json and https://artists.proofprofile.net/proofs/artist/fcc9dcf3-1f81-48be-988e-9e4ccca7f3bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Scientist (Live At Circus Maximus, Koblenz)
Sinnflut (Live at Circus Maximus, Koblenz)