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 0x70bbf98723bea5a98eaa1f40e5466c2d9cd42106c1f182ede4efcdcc9e71542a. 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/04d8203e-0563-4e59-acc9-290a36e71936.json and https://artists.proofprofile.net/proofs/artist/04d8203e-0563-4e59-acc9-290a36e71936.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 0xa01813ee6a2e35e41c8bbca8f2a6bb525ec822cadac42c53ce6a2d3062347325. 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/INA982100457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfefe26177290a9ec432532367701a76b14d096cc9f8fb90de2118215834225e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/INA982100458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953995283d910779d1807610d76b3f02352c8eda53e49575d77e80e0fc983dab. 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/INA982100459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf95283c258bdf05199f05ef891571b995a76466abca094caf9198942048902. 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/INA982100460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cac388786e491396fb3c5803875c9896f9c3c3fb53160334b8eae8949928d7d. 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/INA982100461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb6139cf61401248a34764fc412729426fa523757244adf7ad4fcd8d135f4de. 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/INA982100462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fba3626755f737f09da4ed514cda0693e1ec5f47c0d3954fffa3cc410a074e. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/INA982100463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122a5bc612a4a4658a520f2fd0d9bff9189f2fd120614473684f0b363349715a. 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/INA982100464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102b8eb336f2743fe08eebba271d187df95d575854974627674c490a4ed0ee21. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/INA982100465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6527d3e4a43adf178f2641a3c8f34f5edbdcc2c816e9f786fe97054e3247d6c. 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/INA982100466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44032ee579dfd781420375817bf5fcf4387ffa2ebae9bf26fc4477cbfac49165. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/INA982100467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e30e147ebb98c059ceb15fa8a47f55fafe56235afeaf79919d0e979d6629aa. 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/INA982100468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d5c251377302214b097c5600e5807b2139b52be83867ec087f3ce3adbac0c5. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/INA982100469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7312d699f59126039e8c0a491e13a55ec318cbde0ab1cc6a52fe62fa4b133a75. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/INA982100470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb589ee391ea3c42af2480e5413b0a71d7fbc951cd64c2291945d13f9109f9888. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/INA982100472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe1d58a33342661939149b1e0731623d20f22b1818dc3ff2164b620044f7358. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/INA982100473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9bef92d477f4df7e065b4a01e634939058201ffe0d49eaea0f011261d8bfb5. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/INA982100475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb71aa84f86c549e32dfc64786b9979faa62c74a2708d30061b0164daa8c4b5. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/INA982100476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96a432af55fc975275c1ab6c11152e7d40f2a9a624e82269803724f03b7f7da. 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/INA982100477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9b68da58e93a28b075e9bbacb95fcb1d63dcac14a0f4f1cdf35172b28f9497. 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/ING212415213.
Malik (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e85e5e7a82de52c012255476abc9cf87b8a478f3ca8b0375e9bbc1810a1795. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INA982100310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9be16bc666168296d1fd2ea9135bd2c2939e9c2cfcac3b0c9e1563f4cc829d9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INA982100332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13950375ddf3692b0ccc899ab0da5ed7badefe9394e8d922210c1a41ea9401a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INA982100333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf15a370e2ca621863b1c97309ac191ee616ae845341fbc7f1e17d4225006596. 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/INA982100334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7668b9bed81af8932e5c05d556c974f369db3a3ebcd68c31b465e880fc4c0f68. 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/INA982100335.