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 0xc1a5b85f8652886de7ea2becd5bdcc9be7b00f1efdfd02510eeb086f2c19387c. 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/9e3b81fe-c120-40f8-9bb6-026dc59dded8.json and https://artists.proofprofile.net/proofs/artist/9e3b81fe-c120-40f8-9bb6-026dc59dded8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ons Lieflinge/Our Darlings - Die Engele Sing
Ons Lieflinge/Our Darlings - Die Engele Sing (CD 1)
Ons Lieflinge/Our Darlings - Die Engele Sing (CD 2)