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 0xb6ad806803e8420d5216345d97d0c39b10c7aeccb2516c3c06d9882786ef33c9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7184d51-b16b-4654-9426-846a0a0c7ce6.json and https://artists.proofprofile.net/proofs/artist/b7184d51-b16b-4654-9426-846a0a0c7ce6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x71d183286f50e213a196f3fb3c66bb35737684cead0c7fbfefbdbe643184e77a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/KRRAR2020179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b8e697db503998c515b2323a2b39e297b20799cb80566b24c47841f18bfc9c. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/KRRAR2020180.
Battements Tendus 1 (La Bayadere by L. Minkus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3b5c679fd6b85bc6e6bce807cedccdb26ab3e13cb331dfe5221d6188d49571. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/KRRAR2020181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a927880ac47f21aff0e15d61499117adc49f56aed925c4c8de0aee1aaa257d0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:34:07Z), 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/KRRAR2020182.
Battements Tendus Jetes 1 (Etude Op.25 No.9 by F. Chopin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96212e322b9619156eb308506331c699dd596e08932ff1b6fc55cfce34e9f77f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KRRAR2020183.
Battements Tendus Jetes 2 (Radetzky March by J. StraussⅠ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81efba98b3a82c5f51381af8fd967587b62c36ba07777d36262d585ce569e979. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/KRRAR2020184.
Ronds de Jambe a Terre (Ma rendi pur contento by V. Bellini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb610684cddb0086401b744f6f26a327ec7f2e611b5c0d66788cb19f7f9e19047. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRRAR2020185.
Battements Fondus (El Choclo by A. Villoldo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b204dd9977945c07fbe9b59c06182d1098f62e8c839218f63b4306286cf3a94. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/KRRAR2020186.
Battements Frappes (Etude Op.10 No.5 by F. Chopin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00e861c13d5b102583f7c2ae249fb365dcac4bff4b79fdc1f832cea8760b0ee. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/KRRAR2020187.
Petit Battements (Coppelia by L. Delibes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f44a413f3ee38eb4d63059c021f65577c442c305a91e2c454edeb5a04a0691f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRRAR2020188.
Ronds de Jambe en L’air (Mattinata by R. Leoncavallo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d2aad8df27dd2cc6d93a951189259efb14b9f912ad6d84d3573eb113ac5759. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRRAR2020189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93d15e0ee4cac065b6924aa9e7adfda85164911c378d676ad1e65fb34a4b75d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRRAR2020190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffaad9468003efe89f8d0a2a28f7bbc7a4352f79f0c10146b461898058f7d6f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:05:17Z), 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/KRRAR2020191.
Adagio 1 (Romance Op.75 No.1 by A. Dvorak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800e29dad0209bf8d2af43344726f444d614133f55d2f2cc2f0f5153bede90ea. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:49Z), 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/KRRAR2020193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3581028166de74067fc5aa17ef120db17e38c2c2d336b7a5452c3b06b85a7d0c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/KRRAR2020194.
Battements Tendus Jetes (La Cumparsita by G. M. Rodríguez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa4171fcfa0efd66ba04284989d65485dbac976ebb181d6ac706d51bca3ad7d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/KRRAR2020195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8e77b4b8acdf6c9efed0e0ca6bdb5b05eaaf3f779dd0b25f9cdb191a215ed2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/KRRAR2020196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c0b485bcf05a398090d6ca99b6c516309ced3a429de033a5eec808e5f26bb2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRRAR2020199.
Petit Allegro 1 (Brejeiro by E. Nazareth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569c855f8dee75b4b97ab1d9c4159bf06158a937c89b91c422f3e358c6267d53. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRRAR2020202.
Warming-up [4/4, 64counts] (vol.2 barre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dafa7817d086e10c5a355e84bf555980ea6ed9623c1f3f70b81839f519f418. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRRAR2121720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f796a59ad0ef595a4ce155ef3edb5817fb407e408ef2452988282667f1e9b4. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/KRRAR2121721.
Battements Tendus 1 [4/4, 64counts] (vol.2 barre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26881d2037574d34df4ba879d934bef395063c586dcd62607e391aa3c1f55582. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/KRRAR2121722.
Battements Tendus 2 [2/4, 64counts] (vol.2 barre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fc05af597e2139ebc0ca5e4460e57fc6e39ae077e430c0a9264c9cda380166. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/KRRAR2121723.
Battements Tendus Jetés 1 [2/4, 64counts] (vol.2 barre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489c64b88054c6524a1c7d5cb0003238109022878d07f484096e9d31b2d0c45d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRRAR2121724.
Battements Tendus Jetés 2 [2/4, 64counts] (vol.2 barre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82848e1d82173f907504b35132c77326e6abc798757b608bcf41e103fcb2959e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:53:44Z), 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/KRRAR2121725.
Ronds de Jambe à Térre – Port de Bras [3/4, 64counts] (vol.2 barre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15999b94159e7913c5b99666544a4c731d866cf7ea7e89fd36c9c701de51a941. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRRAR2121726.
Battements Fondus [2/4, 32counts] (vol.2 barre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558849cd2d2a0bad3bb718fe1a16d68051002961b57e0833c4d4de4d437db00d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRRAR2121727.
Battements Frappés - Petit Battements [2/4, 48counts] (vol.2 barre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9cdd37794f8b8b3ecc08227ee10f3189c367af416913cf34271a09b6482a44. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/KRRAR2121728.
Grand Battements [4/4, 32counts] (vol.2 barre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79580a07df1fbdf30c7b10f0038a176e9c4d74c073df2ad95a064a2f63833e5e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KRRAR2121731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9efa78c07bf110b592be9deb9df2e203359acbe0502556b5c1500a7362d4b52. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:48:44Z), 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/KRRAR2121733.
Battements Tendus Jetés [2/4, 64counts] (vol.2 center)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376cc60cf2e47b14fcf4126555dece0e57fbe3ac44ed6ed83b61a8771377ceca. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/KRRAR2121735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253398717cd85a67cb66c286eb3660a10ea96699b4bd41b7f804abc03b898062. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/KRRAR2121738.