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 0x90e8d1bfcfe33ed957438c335e7cee2332e344757a0e539daad0a79234687783. 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/16edd76c-e67c-40c9-8b92-36209684a0d9.json and https://artists.proofprofile.net/proofs/artist/16edd76c-e67c-40c9-8b92-36209684a0d9.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 0x13e79450b16bcad8b7bd03b56ef29f34e7663cc9031f200d7c1b6fc0517912b7. 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/QZTAT2255706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0664d65fd6ea7a3cfdbcf127e6e34b1f5e10f6a148799dfabf51539b058b8408. 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/QZTAT2255708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea9bf193824c10cac625130239f6bf10ce94bd7c93c5db49372134f76c3357e. 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/QZTAT2255710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c10fcef21048b3382c003d759fef8b90fe43ad57e51424ccc23ece49fb044a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:07:20Z), 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/QZTAT2255712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ed0339a6597e6dd17b05e25bd822e0ae1a9e3ee7c7c9ee650819a3eaf31856. 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/QZHNB2458753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a387024a27c031932975d946bbbbe382f5b791e77add02992239cf1cc3431f9. 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/QZHNB2458755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f27ef3c0d92456e681bba00c62ef86e74eb98f2d47f9875dc594722ff3a31f1. 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/QZHNB2458756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1aa13894106f44c80ff106888478bb5eb4ecf3f44cad8e90006ef46c3022a4. 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/QZHNB2458758.
Simulacros de Liberación (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138269e5e828bb76ba22299c0ffa2d1a6897527c86691768edfd9bbcd100780a. 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/QZHNA2142237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a73a380ae783ed4b725b6842c093ac10c94cd9b05031340890f8f562db50d8. 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/QZHNA2142238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81ff75490a2f7d6efebea330d0b0dccb7b2fa9aedb12e473e53cd6ac611d4d2. 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/QZHNA2142239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56a9d2abd6f7be95842b0bfd99c0a7b11db94479d4f9ed70e2ec2cd20071ceb. 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/QZHNA2142240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fc2b9ce26d56c5d8c9d038486af4675d4fdf45ab2582dbf71ef9cd858e9b03. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:18Z), 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/QZHNA2142243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52bf5a1c9c50f064f7b0fc71843a5132fc9b1b37bad0298fb6fc3099c20837a. 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/QZHNA2142244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1af309365f5d9f61dfccb1c46647a48e1715cefea3d7ca0ceb0567b39f39ae0. 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/USL4R2240369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2c5f33123ccb3a155bcf40709f7f904deb664712979ff0f8509cbcf50e52ca. 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/QZWDW2428742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e76c68d7fd8b33dbfb15f789a325c58244dbe386a691b9a6cf87f8c4c5be42a. 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/QZWDW2428743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d54b79507690dc25a94624a3c9dc2e62e575b8c752ee69022b20679718189f. 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/QZWDW2428745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47823f3aab8d568a93813eadfcbbe3cd3a502cd85bb057a08d54158990d3a44f. 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/QZWDW2428746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bb5f603c6afab38c6cbe1d83c526866c77edbde14f09320b1e44735692d7c7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWDW2428747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38606d7505a8255b7bbf33e911f044b6bf15fcd1aaff94576a626d9587ccf2f4. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZTAZ2374669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b580138696a5b755900b8274d733b6e927dab554d867f7d71c29c14004fb15. 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/TCAGB2255907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fafe57539ad2aff02203e299d428f1da0f97838e14155e4f613c9f7b62df7f8. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZHN62178229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451deff728d7a79e339b063866f67ee4744aa1388bcd3be7bae46d372bf5d7c2. 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/QZHN62178230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd124cce60f576903db9b5e202386c06c4a0ced99283ed400bdce4d0a0c16961. 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/TCAJH2506969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55387d54cae507b3b8320d65b3fce855ba2dcc65931515a7c98c8d6b0cad4c9. 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/TCAJH2507717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff383e96e133bcbc0995e1d901ee9392c4b7e3368a2b65f831fd8cfec50a8f85. 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/TCAJN2591710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e90fdaa20262780d123cd3965fd87a583dc79dc3a7bab77d2a431f0cc0d92f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:56:13Z), 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/QZHN42020411.