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 0xc18661c79782689a82cc40c4e8918217fd05b76025319132ec7b53124d721d73. Chain 2 (Bitcoin): anchored in block 953846 (2026-06-15T22:48:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00b0bce9-e8c0-415a-b583-4bb7126b90de.json and https://artists.proofprofile.net/proofs/artist/00b0bce9-e8c0-415a-b583-4bb7126b90de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
J. D. Braun: Sonatas for Traverso Flute & B.C.
Jean Daniel Braun: 5 Suites for Solo Cello
Voice of the Soul - Flute Music by Jean Daniel Braun
Schneider, Michael: French Recorder Music, Vol. 2
Recorder Recital: Schneider, Michael - Handel, G.F. / Telemann, G.P. / Barsanti, F. / Scarlatti, A. / Sammartini, G. / Mancini, F. / Castrucci, P.
Troisieme Livre de Sonates, Op. 3, Flute Sonata No. 3: I. Vivace
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 0x579bcc7cc171fe6936213a5370b98d370887a5080372334b93b2d73a6c5fb75c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEAEH9545010.
Troisieme Livre de Sonates, Op. 3, Flute Sonata No. 3: II. Largo poco andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e7277c46bb83296be27225c008e9d05cbc5add5fa301e03b50e4db68a0f2e3. 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/SEAEH9545020.
Oeuvre Premier, Sonata Terza: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17be99518b78bf20cba928d2f1d0029eae1ec69f5bdf3d090d9a6c4552b4809d. 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/SEAEH9545040.
Flute Sonata in E Minor, Op. 9, No. 2: I. Andante (Arr. For recorder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c588e342aae1508aa25b7be868197e8adc922b776537a342757679c739fd0d7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEAEH9545090.
Flute Sonata in E Minor, Op. 9, No. 2: III. Sarabanda (Arr. For recorder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeca8c6308bce8ebfe518ddd2098c8eed741f6c263a1f36c9a5253455cb7f66e. 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/SEAEH9545110.
Deuxieme Suite in B Minor: I. Prelude. L´aime de Mr de la Barre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6f2c6504e10fd567bc3984abc6f1cc6da83d58700f374a6fd430672d383cea. 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/SEAEH9545130.
Oeuvre Premier, Sonata Terza: II. Corrente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942c0cb725b775d6f8d292f4fd4ad3e26f6f5c9031021e77e540aae42f293eec. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/SEAEH9545050.
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
Oeuvre Premier, Sonata Terza: III. Gavotta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac12e13d873dbcb5378c38a282f7cd674eb8651f739677a33f5f15e0b111abbb. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SEAEH9545060.
Oeuvre Premier, Sonata Terza: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5333945c356748ae119a3f587db77157a9ef267c87f69d41350767caae7d62c. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/SEAEH9545070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b88e78385854e6f84f14226bc2c4ec1b9896679d9696f64e9f5d7c2ef9c4d20. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SEAEH9545080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8549c29eacb2b75367a5eb147f18e985cd5a1a1ff174f3dfa92c1e2aca67cc2c. 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/USSM11609374.
Bar-Oct: 12 Baroque Masterpieces for Piccolo
Divisions and Sonatas - English and French Music for Recorder and Lute