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 0x95b8514dd3b3dee5f6087e9b962b2e5b2e21eef7216aa7deb738832904e29dfc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccd034e5-21d6-49bb-b5f2-fdb632dafbe7.json and https://artists.proofprofile.net/proofs/artist/ccd034e5-21d6-49bb-b5f2-fdb632dafbe7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Blind Man on the Corner Singin' The Beale St Blues
Meet Me on the Other Side (Mountain Mist)
Hungarian Jazz History, Vol. 13: Ragtime!