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 0xf5f05c2c5c9c03a31f7ebe0eedff53064a5d659c175498ccef005d00f91222d5. 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/fb9cd766-71bb-417d-9a6d-a3450208b57d.json and https://artists.proofprofile.net/proofs/artist/fb9cd766-71bb-417d-9a6d-a3450208b57d.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 0x10324da8a1a61f988913607256492a553caad3607711cf3d4ccdc8ebdde2cb55. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/MXF367925228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd176436013f4c590332e79a3d6130ce56e167b50bd4bc8a98e35e5e956db097b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/MXF367925227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe970be42266e6d41415f2417d99d508bac1b5b2e8e262aaefede7d637e29d628. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/MXF367925225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb775268a20c80b14919b0f2839ae52f3923bcccf2a545ea5652d20c81e99d2. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/MXF367925224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b89ed2a38718537de8369b7e07bad4a2e03d81c8aedfd88ae65169068b5ed9. 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/MXF367925233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffb343608a904293d9d2000cb913b579c4a4c06d8765308896b7861bfda21c0. 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/US3DF1111371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd4f46c6d8f56686ea0eb788f9523c3684c04c604ab14789efa1f9c0219d4a3. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/MXF367016055.
Colección De Oro, Vol. 2: El Dólar De Mi Suegra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c507699080dc077d883178188368536bc5de9b638d4a9c4957b355e391898f. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/MXF367421090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2b0475dc47f8a548921c21fe589cce825475a45a547441d2485fa4f7b0a507. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/MXF367623514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eca0fa20b77931091fa9091e177584aa390b92e41841ca01fd3c4c9633440c. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/MXF368126167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777c6aa16a647feba6ff4ef6f2bd61f0199f041dfb3db4724b1a2095ac2ff133. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/MXF368930316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cd6142007a9fa4ef72cdb2eca93fe00bc66093c2ad26c123a11eba3e2bf49d. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/MXF368126166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8671cd409123c5a597f97310c4ca5a17c972b9be4714217025e850609c336650. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/MXF368930315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0776505738d105efbc181a4a4a6df0e9383e40381c7319e58fd5bb73b13ceb. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/MXF367218081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da179abbf17eb0018f5c63c96495820c19b78219f2eacff8089d0c906976cd7. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/MXF367319695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b757034b493f14f21fdd68be0b69052d7bc721496a2a4619a00a0a740305257. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/MXF367623028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bb1cbe6a9ac41f1a880d5ab79cbc315e8d569819b36d5ed1b3c2d1f8c9ced5. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/MXF368025928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc4ea2ba594e0c6df349ff44b683c3462110bf9ec7d5b7373bfd7e069aaec66. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/MXF367623387.
Colección de Oro Vol. 2 el Dolar de Mi Suegra
Colección De Oro, Vol. 3: De Mano Sudada
Gallo Jugado (with Banda El Recodo de Don Cruz Lizárraga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866b46522cb5a4e97e4a115ccdea015a29ab5e0fa1a3a3b1325fc1131b4ba930. 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/MXF018300443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91032377732594875522eea6026efd301bdd9f7cb4250ac522a8326b130023c1. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/MXF018300446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519b216b33c1cd77d82ee206f47b40f0acac81514a5df50e53553d9bf71df41d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/MXF018300447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471118196826bd6a7c7c600c77db843ac8bb59fafa02b092b2c6358acf0ef80. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/MXF018500950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34823a95c821d1272849b956e58922de142b8b1e8cc33a9c8f07e567fd5b748e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/MXF018500359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc07ed6775925a59e1c15e87dbedd2f3455d9d46b16ac0c143d9acd2764d00d2. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/MXF018500361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c086bad404174ada0c405a7d090a34d3bf4e4cbb7168fd7396c1564ede94baf. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/MXF018500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe692619c859b0969792bc20a7069db7818059203a466a34ac2776d7525444d27. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/MXF018601252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f98cb53c25e7d4b0e32d53824e7c2fa0d6340b47b6042fc9ae9f9138e1cf40f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MXF018601253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7531f40f2a3c2b1299080741f3a2bf5534a41f784aedfa492cff5915d995e19. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/MXF018601257.
El Compositor de los Pobres "Me Caso, No Me Caso"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1d245b53b7087603e8a995689f89a8c38049fb7cf183e739edf00c3ab1c396. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/MXF018600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b37a34b673598ce69da091e7827a314247c990281bcbd3c9f7fa27ceb5d6467. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/MXF367724114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe035ad2fb335b79c052ef6ce3692004ca5e4ecc024f9eba30fc28c89eff2f320. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/USC4R2333669.