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 0x044f4834e69968d977e8fcb5c8e84ab0d752cb3f29e94acd01255260bcf9ab86. 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/4048bf7d-a3c6-4d08-bef7-58f03115a76b.json and https://artists.proofprofile.net/proofs/artist/4048bf7d-a3c6-4d08-bef7-58f03115a76b.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 0x0f11f4ec67df5660a42441b5069d15550fcc574b502d9b9cf5b1b19f7dc116ed. 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/USSM12005981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b058ba8d7fcf8cff565de6760d36f183158229fb0a0e7c3b4fcc8148798b99. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12006336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fc00e061884af740f6b8131b48660c01f2e1c2ea62fa689150574abcd9e71d. 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/USSM12005682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc6e69a3c520750e324b0ef4f8098256a76019d5b855dcda55ec720714de75e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12004789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed787ec68c1a13ea296537290def1c9e8321a5a7488c054a282101cb74fc52a0. 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/USSM12007182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964b99a804ef10ab0994305c06bcfa5df7ab6daf0482dce4713a1a847161b72e. 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/USSM12004791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a97117859e094666c49e3c96afb7dcdad6fa7f13a82ac28e60383680aece16c. 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/USSM12006095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bdf5dda104faf5316de55146bdb8c475b0c740ec0f738d41dfc38f57a6423e. 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/USSM12006097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7452bbc01db9ed1f27683bbcaa7ea224bedb6686efe7c2bf471b329923c2d0ed. 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/USSM12004481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858638dd47a5639420291e995f99c6e7c687977e839210fe3b88a823b5de60b7. 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/USSM12001915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d64285f2998826d7ffe28db57f7f74ac54e1e5eb336c2e86fa2ca8515dd5aa. 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/USSM11905801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22ff529e16311b84021fb24adabb6c1117334432fadb5ec621b1631ceb103cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11905802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed62891a3eaefb06c18cd83177b217ce3fd193c36b7383a5b72baf0c05ce3dec. 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/USSM11905803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91d849b0853a6ba5e7a36e933b09e579cd3c2080c206788f6810a8f00ffb1c4. 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/USSM11907981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7626ba83a36c7172bbf3c4749c30ad0e6012e8155d7101f5f079903428c7f898. 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/USSM11905806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf7a817719f3a264fe1679d6353a97ff22bc61d82d519fe4478ef318c376d2a. 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/USSM11905807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752ff835970455b08e2f7e194ebf1bd12e2198ff8f8ccf5d6fcc8513f83acb68. 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/USSM11905808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f3b1e44d7b0d685529ef894b5389a71898f987d952964438611e2b8acf3737. 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/USSM11905810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0df3b6460cfaf41d8a30b6c6eaa7b2ee36ac5967e4a674adf6a810d51691733. 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/USSM11905811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ee60dee75789b338c8e60e9da2371f34bc9b2a41bb117144b9d9756d48e254. 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/USSM11905812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc716edb7b711faa72e4e9c4e0e65e633088cdfd859f0c262150b7705dc73eaad. 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/USSM11905804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e1f060a353db4d94dd4d63284eab08ea9fb57ce873b15f1d1cc420563945ec. 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/USSM11907982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6506277b2295dab9f13fa53926caf3ed44e5ab30350882138682d46ba455ac. 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/USSM11907983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d56016794387c79c27a54463324ec8d9d32635f3f649fa5f4bd80638254f2e4. 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/QZS7J2251900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0bc6852b1881e5219e18bdea6658755e0b005417be4e3004c866255c1c2caf. 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/USA2P2156106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964b99a804ef10ab0994305c06bcfa5df7ab6daf0482dce4713a1a847161b72e. 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/USSM12004791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858638dd47a5639420291e995f99c6e7c687977e839210fe3b88a823b5de60b7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12001915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25319ab0aff29d839eab757f65e61aa2f50101e903e65d81fc8a7ee2f0133b85. 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/USSM12000892.