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 0xced44be937510a010fd2ef5f54c32bf9909a25189bf32f381b6981955b3c7cda. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15ee83cc-2730-4ecc-a832-292b230d343f.json and https://artists.proofprofile.net/proofs/artist/15ee83cc-2730-4ecc-a832-292b230d343f.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 0xb6d950a937b3b421d186b51cd33acab0226d6adc324fd5ff5569da22eaeabe90. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPE502100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531e17a0ddf4e73bc5c4756b29c18657e436b22dedc0ab3fbfa3d7954411be97. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPE502200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685af3ad233fdc3fbf49e1c2e75314f909460dd0bde08aaad8d0b24814ca0bd8. 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/JPP302000308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f131d685b74beb65fafa17549f9231663975d11dcbaf3323bfb2d6df50f27e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPP302000309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d478f025d7c3bc3327854bd0abc09996efcc49270117afd6373b70fa21c231d. 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/JPP301900423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874f7edafe24cce99010e21edcd5d4cb8f0b621560c5ccd5ef71b83f00781e62. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPP302000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928472332aab2d416e411f33107285737f70f252da5f2219038ee3722072f9cb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPP302000311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc1bc8b93dcdc2d586352ca5afdbe240feef2d6fb849f124d13e8ec16eb1359. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPP301900681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fd7c133d217729f353bde79b75aeae16e20685aad35944378f6c407cb810a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPP302000312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeece2de9b9e2b49507806ec52f8337b255bd92ac29b9e8dba54241281cb5e6cd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPP302000313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f011735f5ca11f625b80826a68fe6919f9517b718e9dd67054070d56f84e475. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPP301900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0390a92f4f1f1e78f81983e3943b43d0c21b9f086fb4dbe824ccdb9f15d3bef8. 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/JPP301900124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9648f26ba4e8230cdbda795f11335e75e826fe1a7a5fa87d90a4169f7cb451a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPP301700566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa461a67371c8a25b6c427b85e03fcb802f4b3ad4f152f71bdfe22dbbb0a8d2. 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/JPP301900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91e3abe614faf6b13e136eb6572a46afeb6fe9e381e99d68f3b488c82f2f810. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPP301800681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca932b1063d74a986f82e4ef8caee00c011ddfdfcbd9d19f7426b7c16962fbf6. 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/JPP301900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180d343c4c3f48eb4f3379182ecf8dbd46a21a5070ba4a40223c0cc0cdd31733. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPP301700568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc38d33de0b8081ac2457d977d8005394a205f102ab4db21a710fb244a04a1d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPP301700567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f90e7db6b047eec2d31df5740cd24239ce3c4efa66de4561a31b99191b4842. 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/JPE502300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0dd12bfabe1a950b9c5a051be22225afe20feb7e18d4557f58a4fb812f978b. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/JPE502300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c678880132c3be052547ddc49f678ab6f47ee32e5312e31310e31f5977dde6. 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/JPP302000469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2681a786a47d7b592671aa9ceec991aa8717dad26357c0e82b32d88c5d3ccb8c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPP302000362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685af3ad233fdc3fbf49e1c2e75314f909460dd0bde08aaad8d0b24814ca0bd8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPP302000308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc1bc8b93dcdc2d586352ca5afdbe240feef2d6fb849f124d13e8ec16eb1359. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPP301900681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d478f025d7c3bc3327854bd0abc09996efcc49270117afd6373b70fa21c231d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPP301900423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9bc3c07cb6145222e2929befff3e125939a8978b0e1cde37c5e3d641e69af5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS801838862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f7d770a6bba261e3721d8c03bb723dff3f53cf7ba5cd586f726d2e220c7bfa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPE502400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35027a2e4adc57933cbac0378210eb968d4eddaf0bab7c99d7c9e9bd55d7e8e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPE502400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f90e7db6b047eec2d31df5740cd24239ce3c4efa66de4561a31b99191b4842. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPE502300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444df4c8a1f2671e49b7757ee9970e16504444a7b0e4a855320d9ec7c49992a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPE502400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c3cf5a066531dedc269ee520fa39c4c43fde7b0f9f3dabce6935f9768cbb99. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPE502400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a44e98310390d17f717454ba13db0dda2826abf7ba2e1b4a8bb4f5b67052d58. 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/JPE502400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f7d770a6bba261e3721d8c03bb723dff3f53cf7ba5cd586f726d2e220c7bfa. 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/JPE502400052.