1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051ad0cf1ba7d21cd5a7ad0e55f8eb35de8f8e6bc7d94467a557f290be1f4192. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf9a6ee0-a362-4af3-b18b-91098055b5b7.json and https://artists.proofprofile.net/proofs/artist/cf9a6ee0-a362-4af3-b18b-91098055b5b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oh Tannenbaum - Klassische Deutsche Weihnachtslieder
Süßer die Glocken ... die schönsten deutschen Weihnachtslieder