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 0xae1f017f485a75d0704055351c50e9cddec777be889c628b2804f1b51d760067. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a416c02-56e1-4d0e-bc5c-64276482dcfb.json and https://artists.proofprofile.net/proofs/artist/7a416c02-56e1-4d0e-bc5c-64276482dcfb.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 0x0bf56c7d802396ead866dc02a03d27c78ef93ed6a7f66875b76a21a3fccf5c19. 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/ES5592200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027b8810d878c04221209af37dbebdddb78d3864cf6aa7177508a40e0bd040af. 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/ES5592200351.
Diatonic Bilbon (ft. Michael McGoldrick "Capercaillie")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612e0b11380ae3a8f00b9bc4f407abd345c971a45a584cedc22407af74079a15. 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/ES5592300175.
Ederregia Zelako (ft. Iñigo Etxezarreta "ETS")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa692eeb95908d8006a14bc53f034a65d39e539f2d6f81be0f1852784222a4967. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES5592300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd3da99416bf10d5d4982ea16be311b7058b42d6c4524c842771a55da438da8. 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/ES5592300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bb7e0e8c4a128aebe50f52c13c96c825dca466db46037203cb20e57b9efde0. 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/ES5592300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4474f8f30f1305d87a915e3dab941fb5fd9355ae8802e9e578c7695fde8cc0. 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/ES5592300166.
Bustuntzuri (ft. Bixente Martinez "Oskorri")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7d26a6ed9af566c22465ad14f2aa14ae53dcafc3bea31ab5af52aecb4591a4. 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/ES5592300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2530044cd20df7aeac0863cc694ec43e753789dea7d08d4825c6f8a0642e4f7. 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/ES5592300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ddc9cee37946c85fbe2b1e1e518c1feba47732375f4f0820ee18993a2586fe. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ES5592300169.
Emaiogu Bostekoa (ft. Pirritx eta Porrotx)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8db1c18e688705c046b5eb638bad512dd0025266531b1a4fa979ec5ab33699. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES5592300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a682fc2082138e8eec1afb3368732b91a470c33fcd892e75e75167a8e85b6a6. 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/ES5592300174.
Akerrak Adarrak Okerrak (ft. Gontzal Mendibil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2919366d1f8a1f9e57d02bcb74407b495a8c0d98b64640773c556a542cfb9fa. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ES5592300171.
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
Vivo Sin Vivir en Mi (Poemas Musicados de San Juan de la Cruz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18b507969e60212428ad5fefb768fe6c4d1af47a333103221be0283cd253fe4. 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/ESAAI0274159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74341c2400c2cc7fc8dfe124349042ed3579256daeb5ad9f70f7b8ac74656141. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ESAAI0274146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6f3b15f8ad07df3623dee6cfc2deadae3aecbf16012e41614a4b8dcf02c453. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ESAAI0273551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cb1015dafdf0b895e368ddbeb5331f86502e60bca192006072921d669c116c. 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/ESAAI0273555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f53f997a1da152e3f77120eb59ac7b50e6775d682ceb137add618524c0bc824. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ESAAI0273559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c090f7b8d951696e8ccc3e7eea83cad7a969f11dec126c4725348069f9bedf. 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/ESAAI0273561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef9ca94864ef6052ee1bf2f5aced82f5071ae8967ec9bcbbcd1f4a8bbba7b1c. 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/ESAAI0273563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fcf20f83176821f5d378d92ea60298ccd26668c5b37ebe127d891488c7079c. 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/ESAAI0273565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342816850ba217240ea0b964aae0dd9183f22d9decabd783548b4dd9b260ea7a. 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/ESAAI0273568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0cdf9b0d8ca19090af118dcbde4422437e1fe401f6b76fd1e4b6719b2508da. 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/ESAAI0273556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747695668accff69e2d2e85985851254cb5d3b7144bf77dc06d654795bc53721. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ESAAI0273557.
Gontzal Mendibil & José Luis Canal: Memorian
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc9b8989149f978e1896db6a0bbf38ebdec3a1c29d1d2f9b5c394d02ca42dd5. 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/ESAAI0271565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce98194270504b892be57adf3c30e2c5f53da7e4e0a82561882537770de48e02. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/ESAAI0271564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efed48574b54825dfb204e7ce7ca3fbe6eeca1fda6901d82c4960f22c7b3568. 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/ESAAI0271573.
Neure Txiki Polita (Gorbeialdeko Kantuak Oroituz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4b08557b269e08d4c065c658cce7ef6de4a3c8183b3a3c4fb64e666939da22. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5591800257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fb9a256ea8fcd0b69721c9d98e5db47ed694010e2cf9cd6839dd319cd11ff4. 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/ESAAI0271544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c26653dce52335ab5e8393eb213059ea8318f9acad18926516a75d9f33d52f8. 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/ESAAI0271545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5902a87afe15fe3390e5145bf08e3db4d15937522c7a12c72d4ec9036cf4a0. 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/ESAAI0271560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f373a7d835f9d3d901e3679bae7923ef9a09e8cac9203f5b372b31d4bdc245. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ESAAI0271528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907dbf6c4b483d11a130215bb9610f6682c83d5349e5d6b708fd29e1aec4ab9f. 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/ESAAI0271549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8ecd28605b9a2ec0018681aa993d3b3e394f0e832e123b33f0e4029c7dc0db. 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/ESAAI0271554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27edb06e562b287c6341ca2663e17384dab6563ad179484b1e84e87e0cc1099. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ESAAI0271559.
Arrupe. Ikuskizun Musikalia/Musical (Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c44312a140bd372b81695bee0cae2088c869c42c1285832da31c9271f47872. 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/ESAAI0273772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96a9267943c30107c69631cd3772c469721daa0a855fc8688e1a9f1d65ffde3. 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/ESAAI0273775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2989902a36d3cc1176b5381cde57c2e294b31a22ecc3deaff5cb4a77de52a5. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ESAAI0273768.
Arrupe. Ikuskizun Musikalia/Musical (Vol. 2)
1972-1985 KATEBEGIAK Prog-Rock, Psych-Folk, Jazz-Rock Music from the Basque Country.
Hitza Geratzen Zait- Me Queda La Palabra