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 0xb1f7220574cbe1f967fef03a406998eb389728190d62bfb26c35f9524c62898c. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/587c6811-55c6-41a2-8574-b2b88a6345d8.json and https://artists.proofprofile.net/proofs/artist/587c6811-55c6-41a2-8574-b2b88a6345d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Juris Karlsons: Dances of Life and Death
Ēriks Ešenvalds: St. Luke Passion & Other Sacred Works
St. Luke Passion: I. Crucify Him, They All Cried
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 0xb402b5b46af66ec36f4e7e4c26b5b64373d9fe63cac1c1822212310eec196338. 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/FINDE1600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8003e4c0533f92816b81d01e827484e28ddb8586da9981b328c0a4177672dfef. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LVL151502097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa16a4017136e416b9559c7a3b8987f894c380a905835a07caacbfda5fed068. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/LVL151502092.
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 0x5888cd0d435fc610936741dc10704c83d7796bd79c8674b4f2174e3481a75898. 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/LVL152106165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb85031242e95b4359166264720aca49ecba992c21bafe1230f74011c9fcde2a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LVL152106191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e716f29b720c77e73e4c52b59c4ca6ed1e41117d612f7ad5a7bb5238430aa8. 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/LVL152106190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295d882067ec8ba7df460214672a7a790e72312f47f58435124894ae2c441afd. 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/LVL152106196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fdc544ecb75ace6bc359b839888cfd52f9c431474130f0c77fc2d9203e074c. 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/LVL151602110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e99d2043b788b7017d6fa9b7e049b7d14370b538ce58794cf3258feb95059f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/LVL151602119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab930d87abc957f44a5f3ab7064b1343f23313304f5af67d1a54d0f19ee33b8c. 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/LVL151602125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2ed61d73ad53d848f0fc3a6db9cb31d0579cf6e4c2a40fa6e3de1f4ff70f80. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/LVL151602100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78eeb71744a376616dd416ced3170f9ff64e2a0921ddf08a151e2e873cbf2b13. 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/LVL151602111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f93d9d465776e25ca99252009906b23e620a72c4939d538bb6e370a48d7ae63. 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/LVL151602102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800d80f308821946e1881cfc6428beeda43dd707b59420c7c62740d7d8e1d4e3. 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/LVL151602097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ba29889454f45666b5da4772fa7986d82102c526532d4a41a3b6c11423388a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVL151602123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e26330d2317438e22680ecece41bf7626e8a0a8594dd04bb0bb933bf8eb5ea. 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/LVL151602116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f376716e0e97fd700a7b52756f9b1e8b50fcb4c5eff0762d92ea918abd48b0. 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/LVL151602099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497668fa226bbc5e16f95cd38fc67bbe3a1148099f4960c7b45879030170a548. 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/LVL151602104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c92162a3dc7de5aed94f771280f22b449ba321987a7d53ef4e2443e8be3b7f. 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/LVL151602098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb5958aa4ae053395085c736da1bd804651491f19609215813685cb22adcdef. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/LVL151602112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23de553f609e7a336cd447bad3aa2f020eacff53fc23d65b676595d179a607bf. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:24:51Z), 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/LVL151602107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d628557db9279d506b56b50482eb9024b1dd14ad40217d7053ba9d7ca808a9. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/LVL151602120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41a32b2cb7da2d840c60dbcf92abae9b90342c6ac47911d5631ddd97d2b3c93. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/LVL151602117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0caa7aeef88b8c5aa7bf3c2ac194c0ab4355a14f6425049d0919fac68d6f94b. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/LVL151602109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c349ffea22fdda6894b8cdce9c909b2fb1eda97ad073e36e4839ebf35204677. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/LVL151602113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7917dea8e9a2bfc9238873606c9cf16eefa117fa1b621d900f87267df77b51c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/LVL151602103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3824601ed3d754023020591634716496885217fd764ba50b9d6638c0a434a1e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVL151902270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c786a63086f8382d587e92d6103bc313cd8973da58087a618d9ab263148c2b. 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/LVL151902272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a344f478b3acef844c5cf59d368e5439474d3760da9423e3da06f7f4427ef3c. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/LVL151902271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d5e79d754223a3059503a604d6445eb9175cb8f0522233d50d6afe5986ddb8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/LVL151902274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f12a473bf2aadd95da7adfd0e3874a0fcc94a7fe9fc83e98c98bfb01204238. 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/LVL151501215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65f1093660369daaf0b8498439e3b5705c6b6666acc46677a35e26457115fec. 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/LVL151501221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5494638e2a110d7f3955982953574a31b458e39ce3bb6081f68812673752dc. 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/LVL152501262.