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 0xeff8de2c866637fbdb129fa5eb4de9f649a9e07fddbc2bc4a2d36da6002d47a6. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/929a8855-8b71-4af6-a1b5-4ca7040d6791.json and https://artists.proofprofile.net/proofs/artist/929a8855-8b71-4af6-a1b5-4ca7040d6791.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Clarinet Concerto; Clarinet Quintet
Clarinet Concerto in A Major, K. 622: I. Allegro
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 0x52e1f7c723c83771b6f9b8ddc657f6f901715ebd3a6a9feb5834ca2c7200e94c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRU621218301.
Clarinet Concerto in A Major, K. 622: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c89687c5b482affe4d6efeaf192f6a263b7f6d2c38165fec987b739db08a51. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRU621218302.
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
Poulenc Intégrale - Edition du 50e anniversaire 1963-2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8470eee00e2a127950374b75657fd75b75d19c9624bc274002aafde4fdc0c8f9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRU621323625.
La Boda de Luis Alonso, pour castagnettes et orchestre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecae5cad3fe94cf98b663b4b5668a491491a6ab6148d6cad6b598e4bdef9fc6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRU621323649.
Nonette Pour Cordes Et Vents en Mi Bémol Majeur: II. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0db8f51d548f4cc34ed63e9da1efe646c57ed748e7aeeb116523d69986950c. 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/FRZ130500092.
Etudes Op. 26, No. 17 en Mi Bémol Mineur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79863d3b3da5da55f63e887f8aa7c7404cac6c78e34311a3fa14add355058ed7. 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/FRZ130500120.
Etudes Op. 26, No. 18 en Ré Bémol Majeur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf433b64588f37c9d5f637096f30f7f77d411f42374600644370d3616be44cfa5. 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/FRZ130500130.
Nonette Pour Cordes Et Vents en Mi Bémol Majeur: I. Adagio, Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa679b2366c91d4553458c82b85363b564e7f2b8f39ad0480b21a03834869d6. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/FRZ130500091.
Nonette Pour Cordes Et Vents en Mi Bémol Majeur: III. Scherzo, Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f504ad2d41527c1852f75bdb723489516a336ae81a5266d194db035dde9519a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ130500093.
Nonette Pour Cordes Et Vents en Mi Bémol Majeur: IV. Adagio, Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5cc255b44b18c1bb9e3fe91e3f130082237222e095165f151c88b472971563. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRZ130500094.
Trio en Mi Bémol Majeur Op. 44: I. Andante, Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f225b885ab23b9b1f381116e0aec5cdb8add0a7d18bbaf5dc6bd86147e3ce9. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FRZ130500141.
Trio en Mi Bémol Majeur Op. 44: III. Minuetto, Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d98f7da14ce8e9caa7f147a46fc613291d050a84fdf4c001edf4084b714e08. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FRZ130500143.
Danses pour harpe et orchestre: Danse profane
Orchestre de Chambre National de Toulouse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795efa3734191cb6dfd9e33ab253c1a3ce3ee235aa85a005265ae79e51708834. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEC999633705.
Introduction et Allegro pour harpe, flûte, clarinette et quatuor à cordes en Sol Mineur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55dbec7e9236401b33addc85e67b35758b2d8729464c579a6cc7e8f126283a8. 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/BEC999633706.
Mozart: Serenades: Beethoven: Wind Octet
Dalbavie : Concertate Il Suono - Antiphonie - The Dream Of The Unified Space