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 0xc1336a6c6475ca166a36c0cb63621647080c811115da12247aa5ae871212dd13. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e36362eb-0a66-4e24-a727-968d9e2699e1.json and https://artists.proofprofile.net/proofs/artist/e36362eb-0a66-4e24-a727-968d9e2699e1.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 0x2f794dc826f00f506e73ed592bf89249ad5de250fd93c4d6c8051dc4d1d5991e. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/JPI101602541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc29722cc7ae501efd15704f0ce5572917c8fba10358c7fd60f1c2f67428be94. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:40Z), 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/JPI101602542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9910761fa45fe7d573b1ac8b979941b561e1952f5770b8cb9ec17d350ca806f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/JPI101602544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71754a858c82fdadcc710eb258ca48c383f787079c85c302bc0bce90d55e559f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:01:07Z), 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/JPI101602545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769ad02ffaa5f2b9757de8e159c86aac86f5e76682dd907aafb00c89067e2b25. 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/JPI101602546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59b913be4b2e18b57bdfe0c7d3ce3561546a157750f7a8738b12f55d33e1482. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPI101703173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2639133bcfa3610c5c6f5a50bffa7a892a5c0ade425fa88c9649ee11f3b11177. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:21:01Z), 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/JPI101703174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184b92476467f8cf1f431d2eca5ed205802bb6c7bb7d8e875aa3f715f5e95560. 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/JPI101800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a074d482da575b1b8b4358635b9d89a4beaee181eee305032b72a80aed87c78. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPI102000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0804baa13bddb80dced1e7ad4a3560d46e4fb056bb9e82d28a713300c0adb4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:20Z), 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/JPI102000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a89f69725716200b1dba55db09b36a2ee34a03604c1a8a9340ba97dd31d12a2. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/JPI102000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdda0dcbf5d650de3f60b521a2b13cfb6a82777c3b2ab7ce9fbeb3d17495fddb. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/JPI102000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540a8b5e39f8fc04f78fe14a820f91d7ac5b130024754a9f81056d04d4b4ee72. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/JPI102000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcde5a079738f155d6cbfea23edb61ce90086a93cdf360459821336baeb096c. 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/JPI102000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf06660b0710d37ce942fa6c52b613da9a9243f0fb5a15d913bba23737eaed52. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:30:00Z), 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/JPI102001350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e244185b780111e66b97238b0196b3ce47d6424baf8eae8c8f5a324062cda4c. 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/JPI102101596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22644f1caf0c06ce8c7a78d359b9e8e1e05df55920d8e23480f01d04242e225. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/JPI102101600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2baf9cec14a41437d8857107923aabc04f993150051c5c1067bc7bd3a2f662. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:38:26Z), 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/JPI102101602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e9b32d89bfecd2300b8f00ccc9129b392c5ca2c3e9fce19940b4723f8be5ed. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPI102101603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cef953a1d3ec0749efb0d28e9cbd145eb6a1ab1bd57cbe42b23d04f86046d1c. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/JPI102201790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeac51fd5a243f853054bdffc4b39a00c78975907596516e01bada9448ceffd8. 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/JPI102201785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56d540776269b8b3489b31ff54ef6f025161d473ce1da14b2694915a470ef64. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPI102201786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfbf32482085485b1fa904d4a6c990ef12fa431bb5ba44656eff34a6c4df073. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPI102201787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8cf5c024881772bbd43268581746db97c9c430432afa1bb8a533405e970dd3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPI102201788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469e38a574de3cc7f0358d16361bc18f0c0629c8c63c8ef2e1c38d46bf63ce7b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPI102201789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cef953a1d3ec0749efb0d28e9cbd145eb6a1ab1bd57cbe42b23d04f86046d1c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPI102201790.