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 0x6de128e0e0584a5c52263ae6abd82e26f01a1bf3f872663e7c323b7461dced0e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7860fb54-d626-44b4-a802-9cb729d5a5e6.json and https://artists.proofprofile.net/proofs/artist/7860fb54-d626-44b4-a802-9cb729d5a5e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blanchard & Colin de Blamont: Guerre des Te Deum
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 0x951b24307dfa51e371bc644cf3efbbbc84769b5b952388ea9de77e062b648934. 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/FR9W11827275.
Te Deum Laudamus, FCB.001: Te Deum Laudamus, FCB.001: IV. Sanctus Dominus Deus Sabaoth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1098b7788b94e4ced449b5565f8506c2e9d8539abff46b3d6a05a618b639fc6d. 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/FR9W11827290.
Madin: Te Deum pour les victoires de Louis XV (Live Recording at La Chapelle Royale du Château de Versailles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9d2a637bd58bbf62382d412ca69865f84fa93b58e1e05483066015db878582. 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/FR7JM1887010.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6376d5a652a0650024254df165ded53681cc27a7c790dd963c8f37817063f3e5. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR7JM1887030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f5ed2b6f9c0d36906c92dd2de7b334002f6416b3a045f015c0f9a51061e133. 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/FR7JM1887080.
Harmonia d'affetti devoti, libro primo, Op. 3: Dialogo delle due Marie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8220b7bf14c8313fed100c9882c0ac2c1e425078f8fd098b0f6f3900e5aa60. 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/FR7JM1887090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415e603d20693b0b03843b531e4a723e0f6d0cb8d2741a2e944ceeaaa6d4d048. 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/FR7JM1887100.
Cantate domino, SV 292 (arr. for instruments)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac824d11609c07c604ae669bbd35777b7f3c395727a1dad56bebd1135de672e. 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/FR7JM1887110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515b25179b76eb3c6d02b1314243b0eb7e1035bb1b25394f9404eda875d75d0d. 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/FR7JM1887120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30198ee3432a5055f2545b4a4383de6848079e32321cfc4bd7ace43c7e06d59e. 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/FR7JM1887130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1351cfaf8830ba543b42dcc4226afb09b7351d18700afd2b8c222204d8ed437. 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/FR7JM1887150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208a70af458de967e340fe93a70f40d921d9b768447b34329612f8061f2f0a90. 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/FR7JM1887160.
Selva morale e spirituale, SV 252 - 288: È questa vita un lampo, SV 254
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8a780f31bfcb0296f191d930374a40b0e8deb3c9e03c006f6b776c094c7865. 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/FR7JM1887190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d264c708637e9d11f1062d311d03d61adc66256daddca7122990ce172369f5d. 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/FR7JM1887200.
Kyrie in G Minor, RV 587: II. Christe eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa545d9826cda0a0d0b7ff6b434f339954b6c687420e0abe10080b3e18b97965c. 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/FRZDG1401150.
Sinfonia al Santo Sepolcro in B Minor, RV 168: Adagio molto - Allegro ma poco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc424ed29d7134996e5df43acf5a818409f8083eece7c0b53848869d8198ecf. 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/FRZDG1401163.
Porpora: Vespro per la Festività dell'Assunta (Live Recording)