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 0x1bcb321e39509d007b7f1cf799b134aab07ccfca03bb36243f909f07c3a89088. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32e476c0-2ca4-47db-8c52-bfee73ec9953.json and https://artists.proofprofile.net/proofs/artist/32e476c0-2ca4-47db-8c52-bfee73ec9953.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
From the Steeples & the Mountains: American Music for Brass
Family Portrait for Brass Quintet: I. A Fanfare. Robin Smith
Family Portrait for Brass Quintet: II. At Fourteen. Annie Barnard
Family Portrait for Brass Quintet: III. Digging. A Portait of Howard Rea
Family Portrait for Brass Quintet: IV. A Scherzo. Priscilla Rea
Family Portrait for Brass Quintet: V. Man in Iron. Willie Eisenhart
Hymn & Fuguing Tune No. 12 for 3 Horns: I. Hymn
Hymn & Fuguing Tune No. 12 for 3 Horns: II. Fuguing Tune
A Fantasy About Purcell's Fantasia upon One Note
From the New World: Rassegna di Nuova Musica, Vol. 1
Classical Collection: The Essential 20th Century
Sonata No. 1 for Violin and Piano (1945): I. Hymn
Cowell: Violin Sonata No. 1 & How Old is Song - Shapero: Sonata for Piano 4 Hands
Sonata No. 1 for Violin and Piano (1945): II. In Fuguing Style
Sonata No. 1 for Violin and Piano (1945): III. Ballad
Sonata No. 1 for Violin and Piano (1945): IV. Jig
Sonata No. 1 for Violin and Piano (1945): V. Finale
Celestial Vision: How Old Is Song? - Remastered
American Music: Bernstein, Cowell, Felciano, Copland, Cage, Carter, Glass
Six Casual Developments: V. Adagio cantabile
Six Casual Developments: VI. Allegro con moto
Cowell: Homage To Iran / Piano Pieces / Set of Five / Six Casual Developments / Two Songs