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 0xcc62fefef5bcc3011891c7a1cd5d1a233b6aaf037b05bab19a40ad5caf8c6f85. 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/cf5a1842-c270-4a77-aa00-4bef59660610.json and https://artists.proofprofile.net/proofs/artist/cf5a1842-c270-4a77-aa00-4bef59660610.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 0xeb48b1b42a322df35cbfadd4be4d426478b59ec992a4d19800536a901eaaddf8. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/HKG732133170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84ceea8c4d6bdf9e94c1eee956f7877f6b2c14b259a8fc5f843cb24e11913a6. 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/HKG732157144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae6dc75695b2c310da601e9c1443d00c5ebd58afc42d695e63f252402bb7819. 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/HKG732149089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5010e2222e5a94769033fa8137c1cdf5aa10609e3b7735191cabd571f614aeaf. 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/HKG731721891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4bef7a331b193e1f7ef597da117c347d71ee38fc5e256040f33dca6aeffb06. 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/HKG731721889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7783b57f2d20758adccba5f372fb836908cdabee552afa5cc87be50d4899ba6. 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/HKG731766684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c22ce0c9c769c0c2375c256c0faa88cffc2e9ba7ed0231cd694638fa538b3a6. 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/HKG732229502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da929a1fa79d6592cd5f98e65b842a442bf48e382d62ae4153c008b7acee083. 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/HKG732244398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e086d8a4244599328954aba32d560c0056316e53ff197a64ce6091435c8b8ac. 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/HKG732244396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3210db2c2cc7bb4cd6a40b8cd7d9cbf9afff5a923989189e1f628d460132632d. 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/HKG732252441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e71b687cf6b34e60c274ba513923551c789f3359267ef90e86a484b36d7cfd. 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/HKG732252439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a312246dd1becd0839745a472e8a6cff300f26027222e908666dd4191e46a2. 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/HKG732149090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b54722dd95bc6d6f4ee9a98a88ba6ac44dec71b0601356111ed2360660203d8. 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/HKG731721892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0309f5a44233b225dc21d1e01a881a10a7447ef6561cc27f57daa6345c0dd8. 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/HKG732223629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a6579cf778581a37bf5bf25dbe8556e745593b0f6d5aff7c9aa74a2783d309. 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/HKG732229503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4126f984b5bd8f78cd8450fe67b123b900e18b1ac06db9923b61f2aea6c06446. 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/HKG732244399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733860a717f8d2234566bb774621c6e589e434606ef88dc40ce13d271f9f4412. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/HKG732223628.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26189d77391f2408284b2a2be142c67921cc50d56b6aaac1d212f8bdd1beff88. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/HKG731721890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00b5d1e934bdfa9a054b01b50292e3f47e2ab7df8c768efb3f24da4d2d3404b. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/HKG731766685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac517d777c9368dc5b00b9e615f5445bafafddab0d23de7b26f086b3d05ed3b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/HKG732244397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3362855eff43b0da076e284bbd57318ee1885b156bd6f79429d01c0587bc9e03. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HKG732252442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc026455e76ffe5f151d279065699bcc952552d59ed267a08e8d4e4e738b252e1. 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/HKG732299548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c425c47c5dd0e248c2c9e70422f561ec979190e30cec33bb7249747cc97213. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/HKG732382935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa46510e78e69231a8d1521faa06e74a5b7aff9e806b687b9a4a6e8c68e43f2. 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/HKG731670550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ebee6518148e3d592ceb14fa980009eec5a92e8bfe9e521d2449763c915862. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/HKG732368286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f645efc8bb96c753d5089dd8eda4b51b6294234af328527187394efe5cc8cae. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/HKG732358875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68de915f0ff0a9efa2215f9bba49d81861f2e6efde6179f6f481a12e6fbbaf6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HKG731645294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1d8ec1a85083e9ef20477489dba25184a66a34e05da18ff76cadb9be307af5. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:31:29Z), 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/HKG732355919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617df1fd182adab5f2f8d6cc147475ea6cdcb9812361f372d9b99dd868112d56. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/HKD012344354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd850a3d745c8e8987bd6a8b2794b346a637ec4fe349e393ce51a5d600985917e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:22:40Z), 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/HKD012344351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2cba8e65de4cc6573ce2a6e95cddb50f0235c3a1b8e307fe7f0724bbdca12b. 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/HKD012355844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5cfbd717d5f8f2c7cc735759dc66a499819e369c77e3ed9b684a89d9f91f73. 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/QNSM12401599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59c8720c0b88e27bbb97c6ca1664f67260baa96f46ade3424ee235c5c703f43. 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/SE6XX2582618.
世中逢尔 (《天官赐福》动画第一季官方授权音乐专辑)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125344f24315cf12f2fc54c11e1972e6023aa1eb2df191303b764be1f00be1b2. 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/HKG731766662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf6a68b695095af2cd391b24a9cd0a54bdde2a683bc6022f3d050b7bd475dd9. 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/HKG731766663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2fe09aca82429131e4a6b943bdd1242b7d6f4bb55a96a6bba7c9c227e09385. 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/HKG732290562.
风花雪月颂 (和平精英《风花雪月》主题曲时装专辑)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3c4651cdb5f30c1d780ff88c4396a4e56ca04e553ce5510461bd93dd51d767. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/HKG732290552.