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 0x458b3228bbbb53edcf4003c8f690aaa37a0bf133b4b313d9dc4a2e0e49fd98fd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06a8c7ed-6be2-47eb-8dc7-65e8b830c005.json and https://artists.proofprofile.net/proofs/artist/06a8c7ed-6be2-47eb-8dc7-65e8b830c005.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 0x09c0a1bd52210095fb386fc43b5717784b32dd33a0a7dd536750eaec090c7ac3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZXLZ2518513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c424e5fd7b1c12bc40b3f08f6c6a7fdc5bf1ae8e65ebdaf0db414b20556d7e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6N21810411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd063facf34662b53ce440586d3fc186bf149ed65bcff1a810625cd4b6ff39df. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM6P41813210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efa683ce0687e04eea26dc02f4506617f82e858bebea50eaca8584041434dc7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:03:34Z), 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/QM6P41813213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b907b8d4f74dae66b41a63701c2e9976c993b736b74816d305e3707c1f2afd6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6P41813214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380916648a6dda9a28d2865e349909ce9979e14e50f20815e5b0a210972bea1f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6P41813215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00ba4296a9becda2dc44cdb1ff27879d970d5a117d5d3321620a20943c63640. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM6P41813217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab3e2754256238b49f34a5448d48b075ef3e14dcf930ece378933f11e1feaba. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:06:19Z), 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/QM6P41813222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fc5af1e67778e8d814a9337ab04bd2e0b64ddb628ede962cfc4c172c8aea37. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QM6P41813236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b024b3143a6ef4ddaa3412b791ff2bc80ac564c0db09686414a563401cc464. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM6P41813237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97ca4da1f49223a1904ba70c45f12c917d55e8e4695cfeecb14c04a29d9c87d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6N21810400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcbe69179bbeb1ba6c0316a1183feed9afcf2afe0f40186d0bca0d1d76da807. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QM6P41813241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9ad7a8754ae2a8c238188e77bee97984e51c0b5f4f4446c515104b274527eb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM4TX1909272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070a5df7703bc825d58cf1208489878bce22c6d9598364f5589a3d4fba3ee8d5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM4TX1909273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a40b9d8684e2f38b822f26a9f9c2ae54a3a6424704c920509bb33a42f0e7f59. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TX1909278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9062c7881fe8f33ceede10ffd52f6c3b677cef8b5f3c2106765f4426a605f2. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QM4TX1909280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7eb81be5cb92b262c5d5751577f4bad197d224b7dcfba73991251a908986813. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6MZ1917882.
Grabaciones Originales: Original Recordings 1950-1954
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee9680eae62b0c8ee62c254db01bb78d13d18223f4d1f34818a179542168e5d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QM6N21822275.
La Gran Colección del 60 Aniversario CBS - Los Donneños
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde25a391db8fb972ec5e30b20e731faebc284f4cc25ff36e641a964e6901f4f2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MXF145800006.
Campeones Nacionales de la Música Norteña
Mix Grandes Exitos Norteños De Colección
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd3074267eeb5743a88e81c94ab3edce444db3bd16cffffe1561c5044c9c9e4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZS1Z1623208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01943447dda04c1ad40fac5d15bcc174b293604890b288c0561af54013baba33. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZS1Z1644977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e927aeb66373631fd4155bc24ea63416f8832e7078fffc2377a27698c3faa3. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZS1Z1644983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9f223ea3a8158ef2f28ea0c09d1397639c5b1215be207bec8ccdaadd7ca813. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLZJ1789784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8fd4f84fd1bf42743c480b3df2ee3b7ae2198c32a9cbb2673f4e7b2e3dd374. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USLZJ1789788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb98f5719ed60fc29fc6b33fd2f6df5ac0d7182f4832ba70b612cdd2670681f0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USLZJ1789793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56f76b7262bc48d3a1220af74444378c5e11ea7884c3af209f1e963b740eb19. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/USLZJ1789795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f10bfab9a4c417bc0780cf041d03238b33310f4a8c7dbc56ba2e529c9a984c0. 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/QZ5FN1702753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470ee5992843c11133c0b722381032650def0d42a8afce68341715a11c30158c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZ5FN1702755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14edc828547ebbd9b14f0e3057c11fd07007a6d4dce8c7cc7687d2dbd5828f3a. 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/QZ5FN1702757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55103d42a72d08fc9acbdad1a8f7943340802a239743b0511329e339678bd7b6. 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/QZ5FN1702759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86f211765db9e9c3ee5dba46df9a273947194263a2f7ac9c1fb373f5116926e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ5FN1702760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0b0d939c7762f3d11510d087fff742827358e4709d064e6735c095bc1c2925. 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/US3DF1113949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e14c25214be2e3fd4a8a59bfd3f56e9d6ebfea49123ca68f434d656ce6f3ec1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US3DF1113952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd473ea6041f916df04b940f66cf2ba333b624764ac70378834c349a598f2c6b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF1113954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074e864b7d26edeb79ebddff1cea8626a1bcb2adec53b28aabb233dc483c21e0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF1113955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af7f0ae39abc2f997f2d0b84acfc1e655c7c421efe0f58594e1897ba6da5ce8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3DF1113956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd672115a30fce16a490520e6b4e4fabfaf46051a0ec67a731542d7b752a39650. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3DF1113957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db37a3a6aaee7ca4be6cb5762d4deabf04c140af884d5802d2c98565242f686. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZDQH2201096.
Tesoros de Colección - Los Mejores Duetos Rancheros de la Historia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d594bdcf894276c377638e9c60249d6ec87a199e3e88cc49b915668d2074f81. 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/MXF146400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9303351e5c892fb0f89b756fa71aab4219bb63ccc6ea2827395a117f3f39cd43. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/MXF146500106.
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