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 0x83a4104a2bd490c37846fba96346b930dbc3e37c7e724ef0c661c2bf4f5c7565. 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/8c565c57-8b31-4d91-8e58-3a0e42d11265.json and https://artists.proofprofile.net/proofs/artist/8c565c57-8b31-4d91-8e58-3a0e42d11265.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 0x8be3d4f4438852e05cb1501d053bc094e87729b966f976751302386654046f50. 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/JPR502301295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593167720c1f9a15134cce9eff9cafa08c3dcb6995b9806a0d0d50b72a2a10e5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPR502413275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4199a69516a114c5f6233159b1abb4b236fae44795660745d6232d8882a937af. 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/JPR502413278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392fe1bdeb0b46966ab651b3a2751a01865c67ed9154ce3a447606573d8c448a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPR502401392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356054d1e7605d51ca04577cc81ec685d8f8b4cb7667bea9f14818a462d98357. 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/JPR502401396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615e611bad3643ef989a10a7f484d5d79a16906c5e2ac6efc98a2c002ca31a62. 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/JPR502401400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4418303267e4d36b138ad93a314b565b08b04933b631738228f1d7b4572e65a1. 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/JPR502401404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d3665fa924fda47774fc4cd63d3ca5552514c18b1c19c13e275072b9e1465. 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/JPVI01904764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e556b4caa0a1929f0e1461375540ae0d3ae8769fc6a43a306475b892448549. 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/JPVI02100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeba61599870463da3cc088b757a7ad66f476a16637965f00c49b4bc375b128. 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/JPVI01903281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6475dc7f52756de1df66c430cd84662d5cd0f94a7502b53df7c24b67878fbfba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPVI01902873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fb482985292ef4ffde697da7929019b5780119dfc7b991b6ce01ddb41ca155. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPVI01903282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4098640fae253e2e923eb59498afe05b16ff14536e199cab2f07024f45bb4380. 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/JPVI01903283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787dab7f7bf6786f5aa86df06e3f4e0cba0fb3564b67cf232d0060eade7b190e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPVI01901766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac14ffdf8999c64476683220c523694d08bfef6d40b40b6129339d64623b822. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPVI01903284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5485f110001775bdf9a302bbe08c788149e77a62a4cfb81ab17be15d417ec4fa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPVI01903286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d51d2268ca889db8d109b376579e4a0f1f96dafbcee6a0e759c0f6b6aa55be0. 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/JPVI01903287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0231b09e47ddb0213fc69b3e7734d1c8f6c8824071ee78bdd34cb0578da04b19. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPC841801601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bd74c9914ce6d40d7e55af258a3f792d4d81cde1ad1103538de882a873ba1f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPC841800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7438c1901b7883d5965f3c3b60649787fdc98ee72ea23e598c4bb0e64eb8daa0. 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/JPC841801603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd202029f8771e22f4f8b704b07ffce0a96f8979a12e631ff40130c85b9d953. 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/JPC841801604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0d879344daab7e6d9656eab07aa5f8eb9fe53814b648dcf82477d9d593942d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPC841801102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe102ddf028eacb37b754128bf1da5251bc3956f70cc43f215e854c1b7b014e61. 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/JPC841801101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a12634d86f8a21a753980001bf5c1e66b135e9fa1a415b2874e021d1cb2081. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPC841801605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885404f521131c3e7234533b4aa8f695d49e047a9dbf52eaa11ecb2c4a4fda91. 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/JPR502403944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb792e92244e5deb91023e788ae88130e314536a25de818e30805fbc9798b402a. 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/JPR502300328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7dafc1e1471f830b93bd3ed5ed37321346d1984ceba0268bd2b7b226a90129. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPR502300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61aeddbb72819f7e01a6b6252990e0b5c937850da98ded2c077e993aa2292f45. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/JPVI02200375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a96066f78ca4d8faa6767461d9a890cbdb2cc233182ce0fb0887f866f95e7b4. 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/JPVI02102381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e556b4caa0a1929f0e1461375540ae0d3ae8769fc6a43a306475b892448549. 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/JPVI02100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf4e59c74315af49c40f579628f1ebb83db5d87e0c14c663d2bd365c3e33ce2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPVI02001982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe16a9ed89985e0d7463e234445fd548f267d1d21725b8e13232f3522821aec9. 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/JPVI02002206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fda07e44584345ffe9b3f87cd01897e7e36fc85a03792fe9c025cdf35c341c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPVI02000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d3665fa924fda47774fc4cd63d3ca5552514c18b1c19c13e275072b9e1465. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPVI01904764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6475dc7f52756de1df66c430cd84662d5cd0f94a7502b53df7c24b67878fbfba. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPVI01902873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787dab7f7bf6786f5aa86df06e3f4e0cba0fb3564b67cf232d0060eade7b190e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPVI01901766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe102ddf028eacb37b754128bf1da5251bc3956f70cc43f215e854c1b7b014e61. 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/JPC841801101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0d879344daab7e6d9656eab07aa5f8eb9fe53814b648dcf82477d9d593942d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPC841801102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934199dcab668d5fdbe09763bf3dbb7b6d7aa6b960c6f9b998cd438807d144e8. 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/JPC841801201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bd74c9914ce6d40d7e55af258a3f792d4d81cde1ad1103538de882a873ba1f. 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/JPC841800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3503ab3f7f1f75a92fde143bee919e78e6e96c5c332ed6a9257d2308e35f8395. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPC841800702.