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 0xc7eb57e5849683e914e9b818271aaf6ec9516a021495829020c375283b4fb431. 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/3dd1c734-d05d-4135-a04c-0aab7d4560f7.json and https://artists.proofprofile.net/proofs/artist/3dd1c734-d05d-4135-a04c-0aab7d4560f7.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 0x8da2a7da2bfe6c6f0cd40aede83dd09ef364428009a79943fb3239ac29751d2e. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DEZN82439046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9babf49d7026ab6953482afc6c3382e689938ff63d3c8fbb27540430755008fb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEZN82439075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3942db9faad68a12bcfeada33eccb0f01ee56e079d0dabe57968f206cd4a00b. 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/DEZN82439039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4eef66a7f361125d76cae71799c91c9da3f5bd9474da888b974bb12d1dc84a1. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEZN82439115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a7138beec2844b6ca699fb38b7c797165471936d206f1c15a7999c688f5192. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82439049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d760e712b68617b98b70ed860357387944dea2e7a85bf592b750855af6842db. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:48Z), 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/DEZN82439037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c278e048c1a3bf4c11be433b32b241a90b809cadd8a5ec8d062f83f2b032ced. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEZN82439080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608ad6297a6004ebc4caad500778b86401860acea9648c26b2203253c8a8aad3. 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/DEZN82439081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ac7398cb0400c407cab2a086796a048b964e9060e04b557b611ab29c143c66. 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/DEZN82439106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224483c6d3011ba2b6e1579878b0247931f6befa36c872b1cf7157a9dcc409be. 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/DEZN82439107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5647a5b056f22506c94a9ff55992713b0b7bc14b740adf195378123eec8462. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEZN82439042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7b048c90e75ae626838879154ee677c6cd18e7975a2c7dd55573bea3687110. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEZN82439083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b83c88d4fc1513b57a834d68ee121ee727f4fcfd9db109816568109325e73cc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:50Z), 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/DEZN82439123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23778d629ef97b58edbc82c2b56d47c4f0ee16ff2b942f5d0f73bbdf1f5c1d5e. 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/DEZN82439118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05331ef5d56c194924434cf22ce0dfd027a9fee1785585afc13d8d61e8101fb. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:06Z), 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/DEZN82439119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d914ce5c1c7543d4757240e7d40fc7b72954684083eaeb19dda0039b4869e1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82439040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdabeb1da4dfb172bb500c5286ba12006a710cd94ea96af63dced783f89225d4. 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/DEZN82439043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36faef17f69ce819e3f9aa3bc6d5327822a719c3487ea6929cfa75bd05ebc08e. 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/DEZN82439126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb543b58620626d59d9ceda41e47c88c1151be7a2dec55b37afdea663921483a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:31Z), 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/DEZN82439077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19380d7dfce3f10e469a23d8db110f72362dcc6751a9ad18d17eb3137d22157. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/DEZN82439109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8848ef5369476e242c32c8fa6efd45b5dacd8985ec3d93f1a46fb7ecfa99158f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZN82439111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b574ddc08635e9f46a53cbef60ffb7e0a51ceb2d01df61ff67be85f0fad769f. 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/DEZN82439108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217db10db79e83ef92a6ffc4282a1ee097ec819ef19a8535d92a8a7e1f852f63. 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/DEZN82439112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dd0315058d537e5d68e4aff9745452aca341a09a2ce8a5decb9e036836a1c3. 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/DEZN82439041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a1a68c41627706c792bebcfbddc6e37290f7a65b80cacfae1c30edf3da85b2. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/DEZN82439047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbff57fa366e9e5eefcd58bc9cc991b97c3384590c18902cdd6af0faa3dbb100. 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/DEZN82439120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947c59ed0c385ff524a814beab539d480e9f81bf8cdfa335946bbd9389feb93a. 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/DEZN82439113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a56cee150475b01e527fa621260404339ba25947b05fc45ed9e82f9de064ef. 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/DEZN82439050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc97ee0ea150391850bb35f62a12b8d4fcd381e38055267d9da99d72346b7f1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEZN82439048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1cbdc537dc6c62a5d92df62c5b0449b9ed49d3f095c72868d7e9dc424795ab. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:20:00Z), 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/DEZN82439122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ffa7059170c3d0a9a82abf0b31ea8bb6ca8e09afe6bf1315c4bfeea5f6b2de. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZN82439114.