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 0xe762f6e7195cb3fe103709d338c73c5760557724f2442efc9338f05e05e041e3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19996bf7-512a-469e-863e-4f67ac588f51.json and https://artists.proofprofile.net/proofs/artist/19996bf7-512a-469e-863e-4f67ac588f51.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 0x531c98d76a50141ac44003526439c8d01e695f54cd77b46c25338cb97a1d2c96. 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/UKXN22188673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1414ef80798ab8338beb924339d56bee1bb0c13d1271ef54e9f494a7197470. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/UKXN22188676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1903bbc3a38c410654b9d2a662a19a1ec8abba59d3c7a72482e1d405cb9bb3. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/UKXN22188697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6033dc295bd4dece2194faaaa74a8ab7042ea35b2a2bd1b27727610a99e19450. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBLFP2125323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1737d8e78bf4db51d3f4cc4743c5ac7e84c0af29351fd6c553f3b2a3719d6798. 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/QZHZ52264113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc35516827cf41075bb26aeffdf9c0879706d2c1e2806014f04ae2708236d341. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBLFP2125345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9934034d27189c4c3817a3c392ff2631234a1e367ededda151093675dadf15fb. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GBLFP2125346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc455de6dda7e646ca033dea63c0b2448e8f1924127b2b959b0d1a7a64c104d. 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/GBLFP2126432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf0b3f6b1c45a522e7d4b815f73df9f972fe9958742b0b1b65a43047588591d. 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/GX53U2034129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b9b8f1f4fcc2dc9a668aa2dfe86c209a4b62b54c5e822b24e1ea36004c66ed. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:50:43Z), 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/GX53U2034130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152276fd9a29120b1d5906f41671fe604eff77c1528299913055168d42971b3e. 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/GX53U2034133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c596a2a6aa2b0207218b433b4febe1c197b6fe27cea2f08d8c3b51e5fe9ac8. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/GBLFP2125331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a69f1fb322d8cd028d5049275e0c6e3fd6ddb83d3a4fd54802572bfcd241f7. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:24:22Z), 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/GBLFP2125333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e709438777c4a9866385cfb7390fcd006ff1ef2aa9a5008e9d98761c499ca. 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/GBLFP2108214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f46c63e6986c5f7443e1eeedcc36eeb0eaacd8dc64af82c04c074c39c479ccc. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:18:57Z), 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/GBLFP2125350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161c2b540bd9d6e259e527aca79935a284e44330fd719b7859b4ae9f9989b46c. 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/GBLFP2126431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc620d4d9afb8725273ab1398a80e27e214a43755be3825c5f342b431fea847bc. 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/GBLFP2126435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5503280abcadf1fd43bcce4e6bced30d9ac05ec0c860b4839945ca158d3ff3. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GBLFP2126437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d64043ac1721e53fb174d791047c8ae43def61984c02aa05af39a8870e94565. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBLFP2125283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77e3af913ffddacbebc166b0f4706e96b5454c0af01bab8842c33cdd723e10a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLFP2125294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650205c59757990862b39b5164cc6acb6a08b6ac9392ba5ffc80739003fdb513. 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/GBLFP2125296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ee8e5fe08482d531c6adf5877c24183ee1f40447a603b1c26b81efa3d188a2. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBLFP2125303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb7167d754f3e956255fa2c5c09c3450ff24a0ce9ac889b363c475118d8e1e4. 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/GBLFP2125306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4aa51cb46b297f0e44873495138f922328ed32fd6707c90553b8d6e30766b1. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:45Z), 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/QZHZ52251244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3902a3d26933b4754099b834edfca61b755d88156f175a999e59a9ed624057. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:56Z), 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/QZHZ52251241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea64ea97ea81176f4d51a5d0591684b387ce3004ce4e784c40b1aa96a0bfe0e0. 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/QZHZ52251247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2280dbdca5c889663ffc372847d4c40e5226b7bb55f447226f055736bc7edc82. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZHZ52251248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69d3da1635880579393c9a777a10d35e9c0d915c1dc038e64b9151814701d23. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHZ52251249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2390bc8ede65283f41a2bf801cf2e9facff8216c0a31fddc1e299a296c4d7ef. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZHZ52251250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd4507a34a007f41f34d6f11f47c64cff5472171d248cb6646b614a52b024cf. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:12Z), 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/ARIXB2204570.