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 0x730a4594928f9dbaa5fb8047ffc3f566ec796ad18d896a0c7a36e024badedf4e. 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/c81d6165-8e53-4741-9169-ae98cd16b012.json and https://artists.proofprofile.net/proofs/artist/c81d6165-8e53-4741-9169-ae98cd16b012.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 0x2e20602378ba49d37f31298d6d235b23b91a757126dbcb98fd9c3fd2f4559e31. 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/ATH921300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a60a651f9e2b2e2fb0de9ffb3fb8ccc3c5c21bacced9e4f2d6203eca90dbbca. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ATH921300404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0de20ed2a40b67eb1b61c3ec7eae86b494ebbed558d9c911c4cba7849de106. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:31:21Z), 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/ATH921300407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb805e507d6459242ca9b660a2dd9779837722079bd2a2733a29b71fb3dea4278. 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/ATH921300417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa79dc1ce944f88706c6cc21fd3e3a4f09f3475597601995ac90e63df1b7e7e5. 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/ATH921401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497235a55f3749c062a42f2a43c5f5b1c460b221f926e480132306b44d42947e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ATH921401104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22adc3ae1f6022746d6f8f417db9e0b563d561cda00422f112a0c81a91ad1048. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ATH921401106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461820677b06bca1394ccd87ca0f01d4ac6aa36f0aa8cf457ae966054f4716ee. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:02:27Z), 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/ATH921401108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f15ba8b9adcd8bb73c5e446a6f4b20d48357561b80059a90a48900527590910. 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/ATH921401111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcab050a81cd4d434d6acb3eac8165155f9ceaad7453cdf381696a5891ce47bc. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ATH921600504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f5d5da56c9061d535aeba4dafaf6120e1415d5c92570addcaa09200a39dbce. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ATH921600505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf155f070b9c7bee58d3abb7667a616d6d8ca30f670d71b6e118557bc1417ddf4. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:30Z), 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/ATH921600506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3d2d2e98c10d52814a536634e4d7096131b0bc529b61547cdd6ef9d43f0cb1. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ATH921600513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bf961d5d25b970793aadfcd1a3006c8928bb2bec5118283a453afed1506d07. 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/ATH921600515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382de1ecf407efaf1eaaf510b9f17774472be3b04a3b8a3bf33e17e7ac664e9f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATH921800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9723c71f8dc213131582eda9d87745b97e0e17e2cd084ea1bf7a23481645ab49. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:12:28Z), 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/ATH921800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06647f06556be94d2d0b152a1745e3b66d4d6615f25753332f283c5dab88ca88. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ATH921800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f5468d984287b1797c020ebb6deacbf60373f9083958329060ebbeaec8238a. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:06Z), 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/ATH921800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4ddfe458dff2a400bfeb3102bac432eee235c3058b81d29a1618ec4be78aad. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:09:21Z), 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/ATH921800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38efea63c967eb1148469fecc69db7484055a49396a2509977148a5ad474b387. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:05:56Z), 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/ATH922000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a055f6f169a5689319622d990193a2395bd01a8a40d79779f3f6694c03c0d9. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:00:39Z), 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/ATH922000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee63385cdee53837678881919f55a2ab949f7eaecef2a1c452241b6cb942d925. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATH922000909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6664c6a4790b88e586b61f3ffe1cd7ca55c95183ff33ea8aa18af26732ebba. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:34:41Z), 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/ATH922200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fd2922a21fe4a128cb804568c399197e17bedff3ebfd3a54503ecd0e09552e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ATH922200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f1b6eb907510f955b6aa22db838b3f2eb9784cc845aa81a5055dd225aa20a9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ATH922200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa1759db94c3c2e6fcc03b9bd115f3d93edfe3cf69c12ba1de4e315e00ae7fd. 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/ATH922200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec0b2e26b488ec4379114cf6cc1cb25c83c1f97daca55f8bd481dcd1ff34dec. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:05:06Z), 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/ATH922200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feded88a714531a86e13580263c1c72be12b91c74be1f263f9a59f948a0831d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATH922200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe626b31454e4f40f658de96b94074854f1a8409e1bdb107388d9ca847f406f13. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ATH922200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea478e955698b1dd40c8018a8b97da1b16f01a26e738540b232a83a5b1f944fa. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:17Z), 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/ATH922200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9732627ccf977d928cafc63d1f4022b95ca265be80912916c784a5e378dd4669. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ATH922200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9606f40b95696c98b477e0f9398f7d65eb48df0cc85a5eccee06f3200f8bcb5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATH922200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f115c5a4880f45e5ca95efb0549a7058d3d09bf10d723a34a4b710bc6053d4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ATEW52402311.