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 0xd24c1d67705a2bcee94b41c041b79dfab0c44dd9005d5f7b546e6a905aae8f25. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae61f323-7f36-48c0-bd8e-3fc66573c330.json and https://artists.proofprofile.net/proofs/artist/ae61f323-7f36-48c0-bd8e-3fc66573c330.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Amoroso: Janáček: Quartet No. 1 - Berg: Lyric Suite - Webern: Langsamer Satz