1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x585c405b66128fdd6a0393c58cc4a0e85dac6b8483a9bff63bbb35673b221f0c. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b97ba060-7fa0-4b5f-a439-935f00997b1f.json and https://artists.proofprofile.net/proofs/artist/b97ba060-7fa0-4b5f-a439-935f00997b1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Saint-Saëns: Symphony in F Major, R. 163 "Urbs Roma" & Dvořák: Symphony No. 9 in E Minor, Op. 95, B. 178 "From the New World" (Remastered 2022)
Martinon Conducts Prokofiev & Varèse (Live) [Remastered 2022]
Dukas: Symphonie, La Péri, L’apprenti sorcier & Polyeucte
Tchaikovsky: Violin Concerto in D Major, Op. 35, TH 59 (Live Recording, Lausanne 1973)
Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral" (Live)
Saint-Saëns: Concertos No. 2, No. 3, No. 5 & Septuor, pour piano et orchestre (1955 - 1957)
Grieg: Piano Concerto - Liszt: Piano Concerto No. 1 (Live at Paris, 1959)
Cassadó: Toccata in the Style of Frescobaldi
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xac64692fb98823bd1654d9c413b163ebd5422bb35e27c7a5949ccfc03c16a26c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA809300211.
Marcello / Arr Bach, JS : Concerto in D minor [BWV974] : II Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0af99b92e98dfb7bc33a6bfa36b54e9c003c66b677d4c9800a68c2255b91b84. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA809300212.
Richter Archives, Vol. 11: Concertos with Maazel
Jolivet : Orchestral & Chamber Works [The Erato Recordings]
Debussy: Orchestral Works, Vol. 1. La Mer, Nocturnes, Images, Prélude à l'après-midi d'un faune & Jeux
Debussy: Orchestral Works, Vol. 2. Children's Corner, Petite Suite, Danse sacrée et danse profane, Fantaisie, La Boite à joujoux & Khamma
STRAUSS: TOD UND VERKLÄRUNG, TILL EULENSPIEGELS LUSTIGE STREICHE; RESPIGHI: I PINI DI ROMA
CHOPIN: PIANO CONCERTO No. 1, PIANO CONCERTO No. 2; LISZT: PIANO CONCERTO No. 1 "TRIANGLE CONCERTO"; LISZT: PIANO CONCERTO No. 2
Honegger : Symphony No.4 & Dutilleux : Métaboles (Apex)
Schmitt: Psaume XLVII, Op. 38 & La tragédie de Salomé, Op. 50
Berlioz: Épisodes de la vie d'un artiste
Saint-Saëns: Symphonie No. 3 avec orgue, Le rouet d'Omphale & Danse macabre
Honegger: Une cantate de Noël, Pacific 231, Pastorale d'été & Rugby
Honegger: Pacific 231, Rugby, Pastorale d'été & Une cantate de Noël
Saint-Saëns : Symphony No.3 / Poulenc : Organ Concerto
Liszt: Fantasy on Hungarian Themes, S. 123 (Live Recording, Lausanne 1969)
Camille Saint-Saëns: Concerto pour piano n°1 (1957)
Piano Concerto No. 5 in G Major, Op. 55: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260496895ebb97d681c2837ca98a62c4049cdd83564bc34c5f89db07ae533c27. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAAGN1687207.
Piano Concerto No. 5 in G Major, Op. 55: II. Moderato ben accentuato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa544d67033ec6818b6904390acbddf033eb1e3dd1206277d3826ba753392b04b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAAGN1687208.
Piano Concerto No. 5 in G Major, Op. 55: IV. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0340293c0623ebf708b11c135be8b09e09a136f3b12d64e5b2e3f9c4920be8. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/CAAGN1687210.
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Piano Concerto No. 5 in G Major, Op. 55: V. Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab79af81278f345182021497192281ee784e380b3431dd158468808e9e27c41. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/CAAGN1687211.
Sergiu Celibidache conducts Franz Schubert
Lily Laskine joue Boieldieu, Mozart & Pierné
Fauré / Orch. Rabaud: Dolly, Op. 56: III. Le jardin de Dolly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af874368d0b15584e17bd94ce7b2281bf44966662f2cab0709359c362b84c87. 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/GBAYC9000511.
Saint-Saëns: Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": II. (b) Maestoso - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc306c21e3d928ccf644d8888b79357d015f8beed0ece11cfaef32fccd66f11c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRZ207002513.