Chiara Margarita Cozzolani (27 November 1602 – ca. 1676–1678), was a Baroque music composer, singer and Benedictine nun.Carter, Tim. "Cozzolani, Chiara Margarita." The Oxford Companion to Music. Ed. A
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 0xb10bbe07631a740e6e598ce1d15cb04266c0aef314617377c1878233dabdffc0. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81a32f45-861d-4be0-81b6-124f311e70c1.json and https://artists.proofprofile.net/proofs/artist/81a32f45-861d-4be0-81b6-124f311e70c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Monteverdi & Gabrieli & Cozzolani: Vesperae in nativitate domine
Angels & Shepherds: A 17th Century Christmas
Musae Sioniae, Theil 6: No. 53. Es ist ein Ros entsprungen
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 0xb0e28d47fb581a7572f63275993896fd5cecf2365db68931ae8ddeec2a2ca20f. 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/NLA460711633.
Christmas Oratorio, BWV 248, Pt. 6, Cantata for the Feast of Epiphany: No. 59. Chorale, "Ich steh an deiner Krippen hier"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9080b837f68064c3db0fe4cfa48b4eeb9f2cbaac06b9508f11aee6b68a01ec66. 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/NLA460711647.
Rosa Mistica - Musiche delle monache lombarde del Seicento
Sacri concerti de motetti: O superbi mundi machina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4efacde8f7e575176106fa6e789ee4dad0714ee22096f3ff30c27dc529c013. 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/ITD551012301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fa74a4f66b5a9dffe3ce0fcc9c6a27ee5016b8b86d1831a3c356874d6cd222. 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/ITD551012302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4711d69026615fb66f8bd21bc6cce21e165c21c58940d9e159c80e8a619ea123. 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/ITD551012313.
Soror mea, sponsa mea: Il Cantico dei Cantici nei conventi italiani tra Cinquecento e Seicento
Earthly Angels: Music from 17th Century Nun Convents
Scintillate amicae stellae - Il Natale nei conventi italiani tra Cinquencento e Seicento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ff84713f21989c52543fcfeb00462d9086a9d8c8ba3d536f7d48d74ab20f8c. 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/FR9W11904022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebfdfa9c66d135466cd15c1732568a3bd68fd96ef873a4098e1a9a3b0d2fd80. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/FR9W11904021.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1771d78b8c55c6b0fd077eebe2ed31fe1c5b1e9685c8fb8518a14762700d8f4b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR9W11904023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120e7670eee30584a724483ffc8754d1d967813d8db251856218f7bbcb9d0c05. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/FR9W11904025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8ad52a87ce50061a7a799d923a4f1712af68fff8e00a654c6890e7ee2b1bb4. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/FR9W11904026.
Cozzolani: Complete Works, Vol. 2 (Concerti Sacri)
Cozzolani: Complete Works, Vol. 1 - Salmi a Otto Voci Concertati (1650)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3e6f422e1137fb0c865768f07b2d439ed6dbca88e82f2d0f07da34272b9f86. 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/USG3R1010173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558280544d78cf50ae08784ddc53f4f92c278e077a862207e48ffd1153cdf8d2. 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/USG3R1010179.
Maria Xaveria Perucona & Chiara Margarita Cozzolani: Psalmen und Motetten aus italienischen Konventen (Gaude, Plaude!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacd927baf6d95ffd8c9ce39f312c5d634a5cfbaf5562b99f2ac8ca0a935b1ea. 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/USG3R0610135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fa9a2762240e9bc65488da9c5e16d958d7f9cbe1b191a5c8c1ae9f241adfd7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USG3R0610122.
Chiara Margarita Cozzolani: Marienvesper
Marienvesper - Versiculus et Responsorium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77591618a19b2843e3ffd468a280a3ce2c7d361cf6438ce4defeab6526091ec. 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/DEC290246101.
Marienvesper - Psalmus 109. Dixit Dominus à 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdb98a28c1478e495a42487d2275f7dca9ec4cdd3d222a38c4cb06898894bf3. 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/DEC290246103.
Marienvesper - Magnificat. Magnificat anima mea Dominum à 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82f2b26d9aa29235cf2236b28e99ea1e49732ccee00cf7d944333245ccf9554. 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/DEC290246124.
Marienvesper - Concerto. O Maria, tu dulcis à 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3789f6c139c1602bfb8c15d2f4431715a1c9467865db17b21b94a93ae100a4a9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEC290246107.
Marienvesper - Psalmus 121. Laetatus sum à 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81d7d141a4fe3120f9fa32aab756b019c82bb1630d2367cedd3c75c87768c2f. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/DEC290246109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2314561fd4b1118420d238c450607e2468bc50495f0a63cd7c1432abe7b53675. 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/QMDA61880153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbb1a52e493ac38fb69c20aacb91a70c7901a60bb991d4287fe6069b892aefd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMDA61880164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958fa8dc92067d43e51c3cfeb945246c1c254b3805b26cbdbaf208cb48626a8c. 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/QMDA61880165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f7f8aae106c20c4801002cdb76cc00ccd698485c6416b2e03f38a1ff1512c6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMDA61880166.
2013 Florida Music Educators Association (FMEA): All-State Men's Chorus & All-State Women's Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd504034ba492f8b93112b7ead699c217fe815d868982cb0f9c878167aed2391. 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/USHM92418860.