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 0x2e2f76c7281eacf454403c4607b8065457ad21b46b3afe02dc921adb2b6225b4. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55f1213c-3e4e-4aab-b91a-6bff390c0713.json and https://artists.proofprofile.net/proofs/artist/55f1213c-3e4e-4aab-b91a-6bff390c0713.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Castita al Cimento: "Numi offesi di furor"
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 0x0a57f356dc59de48958a0002828fd7f8c2097379fcc614d3e0d000976b2bb4c2. 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/FROV61781701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b113bf5db5c11e2ca5427ba01cea59bbc1fe1ed2ccac5c62de5979c7fa0d44. 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/FROV61781705.
Maddalena à piedi di Cristo: "Per il mar del pianto mio"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7462289751d57e332c53ccdbf14dc4e3e1bb46eb0b81fb92e3fee183a3c90f2. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/FROV61781702.
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 0xfb514036313591e965788af9fd6236cf03257e22450062043b74dbb219636c1b. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FROV61781704.
Il Trionfo della Divina Giustizia: "Vanne o Sol d'eterna luce"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64dba7401e5c3e92e7e0961087b558d6d800e3c46f123290a41ffc1cdb4b368. 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/FROV61781706.
San Casimiro rè di Polonia: "Miei spirti guerrieri"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22707c28a17c389e8c71da4316b95e2ee76c7f2d1c94dcd431547943b18d9f1b. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/FROV61781707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b64125213584501960af7aca3513d8bb86eddc4717483d3fb09feea3fe4bd8. 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/FROV61781712.
Santa Francesca Romana: "Miro che fiumicello"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8fc4adda7a7eba2a370d37d2a50471b857fcb536a79833d3c29991d6e189d2. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/FROV61781713.
Il Martirio di San Giovanni: "Vanne nel vicin tempio"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1745d5df78fe55a4880d8c97b47aa97e0109f1cc04e5215bf5a88133f60f69d4. 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/FROV61781714.
Il Martirio di San Giovanni: "Fremer da lunge io sento"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523f9b5b089db2b37e464e80bf882c4932c742a27c49cc8bb7b4bbc67c5786cb. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FROV61781715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03766a28bbdff11f8f0402a1e05a90f2d242023cd693e1283bb5c1e01d6f4b2d. 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/FROV61781716.
Messe in B Minor, BWV 232: No. 4, Gloria in excelsis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370b04185e8d04d5e62888dd6ff8a28ce2940e2c6404ecc07fbd6dd95a4259be. 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/FRZ130837040.
Messe in B Minor, BWV 232: No; 2, Christe eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf080acd054a0abdda96a7fa3674d89b09e3b54435788b18f66e4ce9ff81810a. 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/FRZ130837020.
Messe in B Minor, BWV 232: No. 3, Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52680345ba9e9174cdf6c6dda219f5b19015d9991c25144777455e666e42a68b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ130837030.
Messe in B Minor, BWV 232: No. 7, Gratias agimus tibi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f107894e223519d9166464e64fee17cf3b23e5ff4415ebe5ec594ad80bf0a8b. 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/FRZ130837070.
Messe in B Minor, BWV 232: No. 9, Qui tollis peccata mundi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49d12194f5d6c9be3daa7a7c1c74ad26515ae1ad1c9e03704f4d47345954b58. 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/FRZ130837090.
Messe in B Minor, BWV 232: No. 17, Crucifixus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5213637fa6e7fedde73257c5757acb33059a88b67a804198845d5beab35aa2. 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/FRZ130837170.
Orlando Furioso, RV 728, Act I, Scene 6: Recitativo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432aabdfdbe6fa424a5d898315697fdc9ea89cf6dc18af752889adf58c3b6bca. 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/FRX290400370.
Orlando Furioso, RV 728, Act I, Scene 8: Recitativo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e336560750f73a816f0082e6bfac8d2fb5ceb3abb7634c243887fb71d4d2b6. 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/FRX290400390.
Messe in B Minor, BWV 232: No. 20, Confiteor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c470088580203836c9b14b33e2238da152d34f128d217d599d96a47616919db. 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/FRZ130837200.
Messe in B Minor, BWV 232: No. 1, Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe775f83375c182ee741e31d6f8302ae3f87a88875b0ae3998d9c7e8b89b080. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ130837010.
Messe in B Minor, BWV 232: No. 5, Et in terra pax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb1429dcf2dd9669f49feb565cc1db303eeeae453a18c3f7fdaf1662012a5d7. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FRZ130837050.
Messe in B Minor, BWV 232: No. 12, Cum Sancto Spiritu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f4d7fa92da1e0d6a3aa7546b9a8f19882195e3b6f7a9a71c9b128bccb7512b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FRZ130837120.
Orlando Furioso, RV 728, Act I, Scene 9: Rompo i ceppi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f07c931433e83c1c121d1fe4b72d5ad57681c8b1b7c1755d5876a82450fe65. 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/FRX290400440.
Messe in B Minor, BWV 232: No. 13, Credo in unum Deum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4360caff824a9dc322eb7bcdbb83e3e974b2d8cbe376b7a295afacc867d91a34. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRZ130837130.
Messe in B Minor, BWV 232: No. 16, Et incarnatus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3138690ca8b0f0d05d8d831eaf3661db6381b25eb4294f60bb9c14d514fdd032. 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/FRZ130837160.
Messe in B Minor, BWV 232: No. 18, Et resurrexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c527c0c1258522dd3b530b363feb0fb27a31a4d3ba63acb1dfa9a944f16263. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRZ130837180.
Orlando Furioso, RV 728, Act I, Scene 7: Recitativo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8f33c9be53b0badfcab797d873293d5342172aedbebcb47b09670fdd1a716c. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FRX290400380.
Orlando Furioso, RV 728, Act I, Scene 9: Recitativo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae28629db26be3e38640ca551e4dac26c37be83af8970869d1e3ff34685cd9c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FRX290400430.
Orlando Furioso, RV 728, Act II, Scene 5: Qual candido fiore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d39d3f83eb30583b3a8011d3c29549bc8e779ccb03902886f7663bfff0eb7c. 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/FRX290400610.
Messe in B Minor, BWV 232: No. 14, Patrem omnipotentem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d61c306c27c188a0eeccc8f20ddfbdd08a2d3fcc55972a0acd762dbc0f6ce3f. 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/FRZ130837140.