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 0x2f3f0bb84140124cb7db4c0180dc1dd1b1782a66983c3d897addbf8be0e78dd6. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f625a38b-a2f7-472c-9428-cd4f65cc9823.json and https://artists.proofprofile.net/proofs/artist/f625a38b-a2f7-472c-9428-cd4f65cc9823.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
3 Duetten, Op. 11: No. 2, Die Geisterinsel
Cantate, ariette, e duetti, Op. 2: No. 19, Morso, e bacio dati in un tempo
Songs of the Sea, Op. 10: No. 1, A Canadian Boat Song
6 Mélodies et une havanaise variée: No. 7, Habañera, VWV 1019
12 Gesänge, Op. 3: No. 12, Hör' es klagt die Flöte
Nevada's Theme - Live at the Lower Manhattan Ocean Club
Bechet's Bounce - Live at the Lower Manhattan Ocean Club
Obe - Live at the Lower Manhattan Ocean Club
Let the Music Take You - Live at the Lower Manhattan Ocean Club
For Walter Norris - Live at the Lower Manhattan Ocean Club
Santa Barbara and Crenshaw Follies - Live at the Lower Manhattan Ocean Club
The London Concert (Live at the Collegiate Theatre, London, August 1978)
Jas Van (For James VanDerzee) - Live at the Collegiate Theatre, London, August 1978
Home - Live at the Collegiate Theatre, London, August 1978
Secret of the Circle - Live at the Collegiate Theatre, London, August 1978
Nairobia - Live at the Collegiate Theatre, London, August 1978
Flowers for Albert - Live at the Collegiate Theatre, London, August 1978
Murray's Steps - Live at the Collegiate Theatre, London, August 1978
Conciõn de Amor en Español - Live at the Collegiate Theatre, London, August 1978
Tea for Two - George Arvanitas Presents the Ballad Artistry of David Murray
Murray, David: Live at the Lower Manhattan Ocean Club
No Body Knows the Trouble I've Seen / Down By the Riverside
Sometimes I Feel Like a Motherless Child
Live at the Lower Manhattan Ocean Club (Live)
Santa Barbara and Crenshaw Follies - Volumes 1 & 2
神游：黄金海二重奏在深圳 Spirit Groove: Golden Sea Duo in Shenzhen
From Tees to Tyne' - The Northumbria Anthology
The Bonny Gateshead Lass' Gateshead Songs - The Northumbria Anthology
No More Wrong Mistakes (This Is Our Music)