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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007f55f8ab8f4cefc18289f8190b873c2bf6087744a24f57b89629418d61f281. 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/f3222686-6cbc-4339-bee5-82437c06d739.json and https://artists.proofprofile.net/proofs/artist/f3222686-6cbc-4339-bee5-82437c06d739.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Transforming: (The Blue Guitar) / David Tanenbaum
Juggling: (The Blue Guitar) / David Tanenbaum
Dreaming: (The Blue Guitar) / David Tanenbaum
Fast: (Electric Counterpoint) / David Tanenbaum
Slow: Electric Counterpoint) / David Tanenbaum
Andante, recitando - Allegro moderato: (Sonata) / Peter Maxwell Davies / David Tanenbaum
Tranquillo: (Triptico) / David Tanenbaum with Shanghai Quartet
Ritmico: (Triptico) / David Tanenbaum with Shanghai Quartet
Fluido: (Triptico) / David Tanenbaum with Shanghai Quartet
Guitar Sonata: I. Adagio, ma non troppo - Allegro
Seasons: V. Harvest Time and Winter's Onset
Awakenings: New American Chamber Music for Guitar
2 Awakenings and a Double Lullaby: I. The Salutation
2 Awakenings and a Double Lullaby: II. The Light Gatherer
2 Awakenings and a Double Lullaby: III. Double Lullaby
Pavane de la Belle au Bois Dormant, from Ma Mère l'Oye
Laideronette, Impératrice des pagodaes, from Ma Mère l'Oye
Golliwogg's Cake-walk, from Children's Corner
Suite No. 21 in E : Tombeau sur la mort de M. Cajetan baron d'Hartig
Suite No. 21 in E : Tombeau sur la mort de M. Comte de Logy
5 Pieces for Guitar with Live Electronics: No. 1, Echoes
5 Pieces for Guitar with Live Electronics: No. 2, Lachrymal
5 Pieces for Guitar with Live Electronics: No. 3, Brunete
5 Pieces for Guitar with Live Electronics: No. 4, Saudade
5 Pieces for Guitar with Live Electronics: No. 5, Stèle
Double Echo: New Guitar Concertos from the Americas
Concierto de "Dance Hits": I. Double Echo
Concierto de "Dance Hits": II. Slow Dance Ballad
Concierto de "Dance Hits": III. Salsa pasada
Double Concerto for Guitar & Bandoneon "Hommage à Liège": I. Introduction
Double Concerto for Guitar & Bandoneon "Hommage à Liège": II. Milonga
Double Concerto for Guitar & Bandoneon "Hommage à Liège": III. Tango
Before Sleep and Dreams: II. Lullaby (Version for Violin & Guitar)
Pequeño Concierto: II. Delicado y transparente
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd935b1a6e2535e294cc5b69fc54e11e1f3b6e4583d206d5f072f63242dd1af0b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191500502.