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 0xd7368323cc11f369d3c82028c8b38f46986d808d75bdf089ac3780b27c968185. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12002a08-c9d9-43fc-9a39-b079fa46c39c.json and https://artists.proofprofile.net/proofs/artist/12002a08-c9d9-43fc-9a39-b079fa46c39c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Telemann: Overture / 3 Recorder Concertos
Suite in A Minor, TWV 55:A2: I. Ouverture
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 0x7c55e004a86e718c8832b070b55dd3a3a09f213191a60a3fb1a6d48a970adc04. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SEAEL0285010.
Suite in A Minor, TWV 55:A2: II. Les Plaisirs: Presto - Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4867aeb55271b59ce986fa6b6632be9985bae2473b92e3539e4b74b0271bd7cb. 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/SEAEL0285020.
Suite in A Minor, TWV 55:A2: III. Air a l'Italien: Largo - Allegro - Da capo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547d3969ecc97c4707fc640e84e0ce979a6909e59f14c22b6b507916d78055b7. 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/SEAEL0285030.
Suite in A Minor, TWV 55:A2: VI. Passepied I - Passepied II - Passepied I da capo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668727e25390f500a2765beb5fdbd499fffac50d5607d9b5846b448671d50bd7. 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/SEAEL0285060.
Suite in A Minor, TWV 55:A2: VII. Polonaise - Trio - Polonaise da capo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f8a1dbec11b488e6570b4a6111f5a4042a7154e965ebd6bcb0e1dc063db17. 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/SEAEL0285070.
Recorder Concerto in F Major, TWV 51:F1: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333b8fbe104935fd7cc641ce909f6fb7610ba7ef4f9fbed3b99690e2d0369c38. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/SEAEL0285090.
Recorder Concerto in F Major, TWV 51:F1: IV. Menuett I - Menuett II - Menuett I da capo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b88e8f8d5fe31794557cff36cdd84a34d427a295b7575ce473f64de2b3008d. 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/SEAEL0285110.
Concerto for Recorder and Viola da Gamba in A Minor, TWV 52:A1: I. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d90c41aa6719b0104130cde89f2fef001bd0a4c54a721714b4c9231232b00dd. 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/SEAEL0285120.
Concerto for Recorder and Viola da Gamba in A Minor, TWV 52:A1: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79e484299fafc14d666328171fe9975e1e39a2162bd2e9aa7336fd00bd1a0ae. 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/SEAEL0285130.
Concerto for Recorder and Viola da Gamba in A Minor, TWV 52:A1: III. Dolce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0def73888f814e6ee533637a3bab482edbdf16b63dc1d3dd4a86ae7c105aa99. 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/SEAEL0285140.
Concerto for Recorder and Viola da Gamba in A Minor, TWV 52:A1: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe397463553ec0c398f3ce3f08152ceeb8e3c4842243be6a747465b4e9003026d. 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/SEAEL0285150.
Recorder Concerto in C Major, TWV 51:C1: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0152dec3a4ac08b86fba714d5e04cca21feeeedb382f175734eb6513f1252a0b. 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/SEAEL0285170.
Recorder Concerto in C Major, TWV 51:C1: IV. Tempo di Minuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6a5ac4f6e0792c84ae0832c7d68565ca294bc995eab03d2933c6d2303a772e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEAEL0285190.
Trio Sonata in C Major, BWV 529: I. Allegro (Arr. Balsom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fa6b1d6a421120b51684cff72570047d37b1f5f5e22b7f8e398dfc0d7ccaa3. 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/GBAYC0501167.