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 0xfbc31a645047c4ba445b6eb196a41c649a096c9734b42e82df308bdf1d73c8c5. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28b51526-aeaf-4a6e-bde2-9717b631aab7.json and https://artists.proofprofile.net/proofs/artist/28b51526-aeaf-4a6e-bde2-9717b631aab7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die ultimative Akkordeon Playlist, Vol. 1
American Medley: Yankee Doodle / The Yellow Rose of Texas / John Brown's Body / Suzanna