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 0xb410dfbda7ffff1ba2b15ef8dfacb274cf7fa8e15a2fd1669b0c67925d1f72d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5398246-638a-4bec-af4d-ba56d1bda5df.json and https://artists.proofprofile.net/proofs/artist/a5398246-638a-4bec-af4d-ba56d1bda5df.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 0xfd94e1657ddb0fd231b798f00c5527b417c56cd7f3586b3dca68893dcf10d7e5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDQH1802805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a09f64560b7c5506fa944fffd21d685bdfda7e3af67891b8f89a4991ae7b90. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZDQH1802806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115320c244acc1429b2a01ffca34b0224650fcda10caa0be8bc975cc5cc15879. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDQH1802807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391a4ebd0ef7f02df3d62aa0ba6dc5900ca8a8167e8c34ea5188ec14c460ff4d. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZDQH1802809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9090c54037511ecc1325eb1eac86a0ee4ca86f7eca256a2cee57e147c8bcf7f7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZDQH1802811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb986cc087d9d374b299cf3d4475fa5d660f13e29717f2763f2cecea7bc2c89. 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/QZDQH1802813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072c2457e2a954b0b2497fd6011ed30a67a7752f6c8ef11d512ccbee7867735a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDQH1802824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde13f92b6830f1e10f4e6d5b0c4ca55d538f7a2be467216df1844592a73400f5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDQH1802825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d0422c3955a4bd7b95358688aa3d57611165fc746fb177aeb72d4be9847da1. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZDQH1802834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd757913d641e02b3fd3e47e8ced36d3804dc751a846c11cbd84f9adbfd0d97d8. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:36:31Z), 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/QZDQH1802839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40be3ba22f4927fbe427734b5a6abcb38d6fb12bfee5a1824b2bab6162de5099. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:17:34Z), 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/QZHZ31985127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2222aee29143737550b9cec7cd455679210b79926c91e0cf7e7abde41e9fcdd. 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/QZHZ31985128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb032855fc90b4d2efba4b2c0d0d891cbeaddaeaf7ab047813cc153c3c78a595. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHZ31985131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671020d865004cee3bcedf2270532cb1b7ddafc842dcfcd7b5360f40d0a4a109. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHZ31985153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7942bbf81753130ce3b4c3f123ad5e225533d6ab4a398b1e36997bde327300. 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/QZHZ31985158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cf484d3343388b6268ec2b2f42b8e65a39491c00c167ac1012e140a5547254. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZHZ31985065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50704ffc2fc369c0e3c0c7381e5307a6d92a8bb1c27a432c6be5491de93c6eb8. 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/QZHZ31985084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddfadac5563cdc0ed08f478dbbcf5e6234a4b844f4716c624eccd4324ce3b6d. 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/QZHZ31985087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1de2e473d1bd67ecbf53dc86d164216d8d344f1f2bbaa92796c987c8bd2631c. 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/QZHZ31985088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc348c94a09a2550961da198cd02795dc347d8117a530a5dd36c3d74a7da8ec17. 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/QZHZ31985090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555ca3d7850b3e29daf3565da4d81f02f384a37b1d35bdf11a89074aecfd3433. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHZ31985097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b0d888b636d2316fcea16ffcb3d08d6c6a0cb42ce5e3b89fa8dc95b525cf2d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:39:59Z), 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/QZHZ31985104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf75477aca7d0e5cf30505a75c4e40de3f78fbe3a9c0c5afe6cad513c4d56fc4. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZHZ31985115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348dae4946766de115a56184191504abfd22e458f1ba2b525e2fdaf80b40104a. 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/QZHZ31985118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2048108bb58d616c2681b864f8e0c3506ce1f328a354c09bfa97d3b4523ec2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHZ31985123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46b8357425a58e675a99bb712a23e329897805456778b28097f6526b609ed4c. 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/QZHZ42036538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ace78483bacdb80925b7096745894fae1ff9f5fca2feb388dfbcb65d131a238. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZMZ92053153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa362b6ca6b69736bd5685cf4c36efcc20ef85caad933d1e3f8db7f916b316d82. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMZ92053187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f275f0844160556fd05045424e452e451d6d802c629f4b82634cb6920894c2. 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/QZNJV2031853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c99e3b8ea17008fdde103b0ea0895dd776f968c98eb039b21a464a5c05e8ce3. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/TCAFN2170574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8685c90995df15ce6f4f1d71242af4065703f25e69d487950cd4ed64ce87c1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAFN2170592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab528f5d74d4c57b47b1a85e4a0511e78da5ce6d9d7d601d66e173ac46a99e13. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/TCAFN2170601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2995902fdf9e042fb7a2569147526ba7e3899c523aa35ba5ab729a6d05d53b9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:31:43Z), 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/TCAFN2170627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3514f1703ba91c96af79c4340ce090c23da7728aa97a2f4878ddfb39746bdd. 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/TCAFN2170631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71c8b51a278846e8a40078880b99b633476745384d7d8003f410b57c35e8410. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAFN2170634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a455e8d6a03c0b6243caabcece7d86fd86a9b62a046cad6a6a61468c3ff92c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAFO2164179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3a695d560be41ffe958442e65fc457ad25cc4509813170200120050b646c16. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:21Z), 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/TCAFO2164191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12c930a1fb06d34a4f93106bbf51f7d0edb50fa298509071dcdbebad36cb91a. 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/TCAFO2164743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d71547584bbabd8873429d54d9c3beb637e8ac5c4005a78322e6fc5e362eb51. 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/TCAFO2165566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73021d25dd59d7968dc873978990bc078922e82ec2f413660f50f5791285667e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAFO2165591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac258bd141df2249a836df3c079588a766f67415d1a63b06e30b86fbf139707. 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/QZTV32399899.