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 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 0x3ea41d8484d0ab99d1099ac0543494277c1fe0b03ffed6426b6cf5c8b2c716a5. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ab59713-4ba5-44ba-b881-42682fe166af.json and https://artists.proofprofile.net/proofs/artist/5ab59713-4ba5-44ba-b881-42682fe166af.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 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 0x19845617ed0edc0c0de6706a76dfe4e380336356aaeccba0f3d7a0d4bfcc7253. 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/DEN962336301.
Symphony No. 3 "Symphony of Sorrowful Songs": IIa. Lento e Largo – Tranquillissimo "Mamo, nie płacz, nie"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478438b8a1aefb4ed86fa69973a9e1bd3426860f038a15ff38a6334d1df3fa00. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/DEN962336302.
Symphony No. 3 "Symphony of Sorrowful Songs": IIb. Lento e Largo – Tranquillissimo "Mamo, Mamo, Mamo, Niebios Przeczysta Królowo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3e68c0dfe37a90e32497bf264316d30734124627cbd0640f77bf0fd4566a4c. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEN962336303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333b932c7ae33a3999541b555ecb44fa37f4e84252f41a1ebaa3fb6c0886414f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEN962336304.
Hänsel und Gretel: Abends will ich schlafen gehn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8345c54835f3376d8a19c9f5abe5395d513223db98c7aae50dada1c9cae5bdb9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEN962336305.
Breath Alone: Paula Modersohn-Becker (Version for 2 Sopranos and Chamber Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d61f4b9649ef493ad9e80fa9865c44df75c91d4a9685314b850f6848e4e4e0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEN962336306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b0f18122aaf38ede888381c9ed30fa1553070c91811d798ff581489d519637. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEN962336307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ef155c827f57220911dae79af723b22e230cb7f2da1df5ad97bf8bce425937. 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/DEN962336308.
Otello: Oh Dio! Qual mal strepito è questo!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce33b17bdcb7fc4ea0f1bb47f7dbe4a108b2fce37d95b82933e18cdd48d537e. 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/DEN962336309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83baf7b51a7e91ca6670ebdb442b371795448e35f501693a084583b09abbb4c. 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/DEN962336311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a23a471ae155d4f1447ea780b67273b2736ee26bd4ceae2a38e90052b532723. 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/DEN962336312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3eb31ab0da2922fbfbabf31fd132c46260b8f49209d799527a330f96f99deb. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEN962336313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221b05cd880e158cee1444faf27976055d5faa3978d3f62bfec512682d3745f5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEN962336314.
Le Cid: Plus de tourments et plus de peine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a434be68abc2728dfd9b4728bccf15845fe4fab8901892f2ec0d4ac6399d78. 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/DEN962336315.
Le Cid: Allez en paix, vous que l’on aime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eb4031c771c5e95bea43d95461b68946924488e8ad4e0335111d4e87eb887c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEN962336316.
Ave Maria sur la Méditation de Thaïs: Andante religioso "Ave Maria, gratia plena" (Arr. Spindler for Soprano, Choir and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e09da04cc715fc7376677a4642cf31444eae609c6db9078b08edff29c9b0d9. 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/DEN962336317.
Ave Maria sur la Méditation de Thaïs: A tempo "Ave Maria, gratia plena" (Arr. Spindler for Soprano, Choir, Violin Solo and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2e1cb76bb78f293e3b56a846bd2b96cc4d097ba203829df36313f9aa937228. 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/DEN962336318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b91370526bb7ddb0b89c7167f14561937ec23143f834c066766026ccdaec85f. 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/DEN962336319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d8b6e1e87e15edc1924b31c51536e5a0dad520c6ac003f2bea22f7bacaa0a2. 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/DEN962336321.
Lakmé / Flower Duet: Viens, Mallika, les lianes en fleurs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87659e81a609f99429757c63064d04feb85a5a9a903c3a3322b9de1bedcb651. 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/DEN962336322.
Lakmé / Flower Duet: Dôme épais le jasmin ... Sous le dôme épais
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f19040f378190e5354ab8aa653d1558bbcf0dcc9df5b83bc0562e53d76a01f9. 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/DEN962336323.
L'assedio di Corinto / Giusto ciel: L'ora fatal s’apressa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091313c7026a49ad55624cb362b25eec6ce2c8126fc8dc3fcc152d582ec65e18. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEN962336324.
L'assedio di Corinto / Giusto ciel: Giusto ciel, in tal periglio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac22d575107a06dc55164283bdd977b9b51fad5dd6d4a4ec2180a891c21f1467. 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/DEN962336325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8488ef10833d59d127ccae8b4261da1451c9b2916b44ab3944494aaef9dd9fc4. 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/ES25I1100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9363c1f2d80c96cc7fd306c6a03951500f885cf332d3bdfce10439c76e44c5ce. 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/ES25I1100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968612a36015f64f1782af4bb695468caa19b2a6ae09d6d9c4b79550f8fe9752. 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/ES25I1100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350d39ca47243d57f085704b1f87f4dd88c79e2ca61de286e09fb5de49618051. 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/ES25I1100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6158709c87427075a04c96ee4309e553cd5f763e98cb57a73a54252a9b2f6ac2. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ES25I1100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18c16e6f9aa28fbd67f9c1919332a1058040cca9be66dcd8158d1c9b1614489. 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/ES25I1100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff506e7cbaccfcd888976bbe4c5f42621e61927c2d4fcd62476aa7662e2f892e. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ES25I1100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c46fb687ecd0ab66bd603a171b02dbd970ca08d2e33459bc19caecc4625dca5. 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/ES25I1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd512d4f5861542abe765e2029b7202940c0f8b739f2ef832fb16fca2d4aae29a. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ES25I1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47089f794ef799c6aaf1bdb62d21f062ff9e7a230f304296b54f5c60bc09cc9. 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/ES25I1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c16431eee9dc2841643cb13c1589553b7e078345f6246e0212b85acf50899c6. 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/ES31D2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3110e2a16643f5527fbb696afdae67630679625650156a9952a6c6ff2250b437. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/ES31D2300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3eba1fb7f876bfb14c0bc4a8781cf0bd162976416dafee32c983054874405e7. 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/ES31D2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86bc210f19228e728d5d9e99a4fba3434e33849f8600d7f9cfbfc72f8f1d66e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES20I1801203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1011d650e113b1db24f517f4d13bf2394920b776b12359889d86d156f850268f. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ES20I1801204.
8 Cellists of the Sinfonieorchester Basel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587db98a21d4c0c5c44ea6d38780a40c7805587f9b389193f566febe8dc2d9db. 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/DEE861701928.
Bachianas Brasileiras No. 5, W389: I. Aria (Cantilena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcb0aed3e3e35ba30db5796921a36cb24c8357ba5c918afce0b461fe36a15ca. 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/DEE861701929.
Four Seasons for Cello Octet: III. Winter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e5448d755023b0898b282e7f40a41ebf31f5d4c1f1ea8dc22344b6873b5808. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEE861701932.
Vocal Ice for Soprano Solo and Cello Octet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d7eea92be3478919ea002c92d60581bb81aa05b6d593e3df20f95e169055d2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEE861701933.
El Cant dels ocells (Popular Catalan Song for Soprano Solo and Cello Octet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f2dab1a7cfa77c45ec340efb799065b32d5acf3771495222249e53849f3098. 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/DEE861701934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be29a18426a191b6ab000fd98e2f80d456c1ebc64aa6ba7ffa98d08366b4429. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ES20I1801199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47ea02f50e848d0aac6cf06b52fc818e8ba4c51c4d6de2ef9fd6048308d8b1b. 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/ES20I1801200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64737022eaee6eb5e0c7fdf77e5440f9ab855bf9191e2cff71ed50577caf16a2. 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/ES20I1801201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271e775eeb242de116a2e82d384b6556c745a03314d0da73899cd7b689e6cca7. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES20I2101071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057f5b068cedb77f9628e78b5e9ae982f61f9b6426e1505b81c818b369d2040c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES31D1800082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46c9ab3430cfead7199241deddf057b40ab887c456592fe5347944635ee1133. 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/ES31D1800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34f321e2a4c0c9b1756cf86524e904121b1d6643fbfe4ac5815f8691b346dff. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/ES31D1800085.
Gate of Heaven - The Choir of St. James Cathedral
Nova Et Vetera (Antologia Organística de Compositors Antics Escolans de Montserrat)