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 0xb8dde93d616e605ac634ad3eb01dc2028983cc92e917e7067733220dab747210. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2faa3f1-833a-44a8-98b2-fa15ebc95dc9.json and https://artists.proofprofile.net/proofs/artist/f2faa3f1-833a-44a8-98b2-fa15ebc95dc9.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.
All'imperio d'Amore: 7. Ineffabile ardore a 6 "Il rapimento di Cefalo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbeaea7231554987ed715e29c933dec4b7409c70a03b11099b59409cc1a55a7. 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/FR7JM1662070.
Le Concert royal de la Nuit, Troisième Veille, Hercule amoureux: "Dormi, dormi, o Sonno, dormi" (Aure, Ruscelli)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f12d287145b337d1e7955a052c50de91b5ba71e6437cdf2f1c7a0e25a567267. 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/FRZ141505120.
La Favolla d'Apollo: 18. Piangete, Ninfe "La Dafne"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785ddfa6231f59712dec1a01f353488626a5e16aa3e5ade97249250695939dd4. 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/FR7JM1662180.
Psyche, Act II Scene 2: Break, break distracted heart (Four Despairing Lovers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944afe19243feec7818966c3272e9abe645c9a2cdbc13ca5776c2ab437256ef7. 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/FR7JM2140210.
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.
La Favolla d'Apollo: 13. Ohimè che vegg’io a 5 "La Dafne"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcc27a69822c17348d2bcb34d994ba1e249ff2a0290fdd468ea151f92ad9c25. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/FR7JM1662130.
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
La Favolla d'Apollo: 12. O qual risplende a 6 "La Pellegrina"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6856c50c6ffb15a6971ffdb6afb53ac890b54e7a9ff3239828cf3198895407d6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR7JM1662120.
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.
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.
Psyche, Act III Scene 1: Song at the Treat of Cupid & Psyche "All joy to fair Psyche"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8542a3284de5dad5ce588c49a86d7f6f30b4d559070bb63384c3103bde943b66. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FR7JM2141040.
Cæcilia, virgo et martyr octo vocibus, H. 397, Prima pars: Acceptis autem ab Angelo flosculis (Historicus, Cæcilia, Valerianus, Tiburtius)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4b0207d61b848aad5d045a3c74b7f553cb827358545cb38ed42919ea44c9ba. 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/FR7JM1673030.