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 0x7d563751055847f39e219cec1aa250eea17f762ec7aff0d85f394b4e53b60179. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8eaf794-ed16-4984-833b-4982cb0f6a53.json and https://artists.proofprofile.net/proofs/artist/f8eaf794-ed16-4984-833b-4982cb0f6a53.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
All'imperio d'Amore: 6. La dipartita e amara a 4
Stravaganza d'Amore! The Birth of Opera at the Medici Court
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 0xd155107e319cc9160e0c65e566dd338878a0b1080cbe3b0b379854ef9b96bf75. 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/FR7JM1662060.
Psyche, Act I Scene 1: Song of Envy & Furies "Envy 'gainst Psyche"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c068b4e681722e167be120855fa439146d6ddddefb67decea5979372b0260de. 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/FR7JM2140090.
Motet pour les trépassés à 8, H. 311: Prélude - Miseremini mei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb55c028f412dfa1e9412d9331c2aa8d5b0f95f4dfab0877557afa4b2fd0ac07. 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/FR7JM1673110.
Psyche, Act III Scene 1: Song of Vulcan "Ye bold Sons of Earth"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc633f274e19c3ad244ecac77a369dbe0637cc38a4c7dc157ff6658f9f3e6322. 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/FR7JM2141030.
Vespro della Beata Vergine, SV 206: Invitatorium. Versiculum et responsorium "Deus in adjutorium"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a75d1d76d0c8a58a308a7cdee3a51bdc714c410a1adcecaad2909e953685904. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR7JM2206010.
Vespro della Beata Vergine, SV 206: Conclusio (versiculum et responsorium) "Domine, exaudi orationem meam"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa501b8bcf5a167705cd776a735f82a976ef77a977dd8f5c4fb97c9103967ed08. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR7JM2207170.
Selva morale e spirituale, SV 252 - 288: Crucifixus a 4, SV 259
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf8af1507c5f7a2688eb5264bbc35c0f55a9f80304b9b874f96e93eef79d3c9. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FR7JM1887020.
Le Concert royal de la Nuit, Première Veille, la Nuit: "Quelles beautés, ô mortels" (Mnémosyne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28c76fe37d622f7465f299dc421f89578f07f4384c09f423e66aedf38db6648. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FRZ141504110.
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
Motet pour les trépassés à 8, H. 311: Heu, mihi Domine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a832a708478501fce75dcb213a28435715a53f63f22366eabdd33e3ac3a6f63. 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/FR7JM1673120.
Il Ballo degli reali Amanti: 36. Coppia gentil a 6 "La Pellegrina"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203003c101265c333d6ac67085d42d26c5a0883888db5329e5cd93ae29c782da. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FR7JM1663360.
In Nativitatem Domini Canticum, H. 416: Praeludium. Usquequo avertis faciem tuam
Charpentier: Messe de Minuit - In Nativitatem Domini Canticum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0787838c9b770ac2c1775dfcd06434c58ee205b017a506be276ac47b61e76500. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR7JM2293020.
In Nativitatem Domini Canticum, H. 416: Nuit - Réveil des bergers - Cæli aperti sunt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a08ebe94b1298844b6187d40684e7d4ecb19202c3562152ae66efc3d7e0238. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR7JM2293030.