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 0x0c01f7b2207d9b3e91f3603cf8dc6a9e90a6eb639d4fed704db2e22078ea5257. 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/57c16ccc-c4a6-470c-904a-c6bf4fc9e85c.json and https://artists.proofprofile.net/proofs/artist/57c16ccc-c4a6-470c-904a-c6bf4fc9e85c.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 0x64ac9e2fd798a10102bc583f49e0ab79b0b4c77bd5e54f0bcf483d2a2c6bb0cd. 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/QM6P41902505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219489daf4943d63042d217f55300aeaaf6db650d448fbdfb738ddb8710adc96. 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/QM6P41902506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a09c8cf706161b8b80929fa013ac83e9701a9b333c316e39a62d450f2e69260. 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/GBHLW2103064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d73de306ffcaf0b40dd202f2d4ee05b9bc0d7766b90eae3b093d588e369410. 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/GBHLW2103065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e74ead6efe2e0c2981915d2ed4e3c4f3c8edaf2bef745b55dcc5fdeb75c4e7a. 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/GBHLW2103068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846fb62ae3e05d4efd25099c97b90000297219f2ae78daf06984dc62d44ef5f9. 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/GBHLW2100668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43740937a3be67f90cb7d6483554b756f21b2f34b9e0df35c452a8f5ff953ab. 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/GBHLW2100669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b29914f97a7e5d4a469526cc45b1341315f3824abfcafd8f7aec762591d6dd. 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/GBHLW2100670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcade6fd93cbecc2b037a1da48174c3d4d5b67adcc5166723335dea22145c6dc. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBHLW2100671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8aed9638a65e79e07da1f2a616f0adc750ce9e9480246cb9b4e204235b7e6d. 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/GBHLW2100672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea41069cd45c35927d860bd69baa41036c340b4334e3df3289e96723d11b4a5. 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/GBHLW2100587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d095cdbbabb1c00ed9ebdd5ad2c636e6b6396735c6501068de563b6fd38601c. 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/GBHLW2000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8684399ed9543b6afed8a5534754a8a8645c2b7eecb3117aa16a56e2244fe0. 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/GBHLW2000180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cf477cf8890435faf6e454f40ee3bc06000739e00806d4d8d2bf3745addf90. 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/GBHLW2000181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e16f64ce2361b5c73dcf7b4c539957eb73bafac6bb52c49a663e653724d2de. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBHLW2000183.
Searching For Bill (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fa96d7943fab21d92dcf60ce8aa2fad29d6c89c2e3f31eadc891259752ea2f. 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/USA4D0968041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff65f4e09b70951d23ea76206b9e984bcb873ecf88c8c48332889875240044b. 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/GBH5A1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9014f816009ce8248db56d429fc5986525589f8c7e4a2052dd603ef7905a7e. 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/GBH5A1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282190792ed98ee14f85a321d4addacb6515d8d892260077f1f349755601c39d. 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/GBH5A1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa437f217f4d0fb3900ab8f661a410f77487c365c3a53351c4e17168590720943. 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/GBH5A1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067da94288c44c2374da0bbecb3fc13fdbde26d20136da15749e127a855d8fb7. 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/GBH5A1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a87346e3a1c0531ed7857228700d6c66dc51fce479666d54b054e42f20ef04. 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/GBH5A1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb84a64635343a3c9e07536654368318955ea84ea57c68510a9bd0ab87b786b1. 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/GBH5A1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc56bd3c91cb4474fc5730adfbdd366e8612217f5d4d233008bd5ae324018bb9. 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/GBH5A1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a44ca75f6d5160c1e8ad8ef5b0cdb55a0e91f46ec64b051b9b0b533e3daf977. 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/GBH5A1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1a46124c81b93a2488c308ed544ba972ac2aac765e8a27d0d4a96d0bceae0f. 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/GBH5A1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9a0b206cf4d4ec50a39595836204662d898626be19078ce13bdfad35a4d388. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBH5A1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90784900ec770bc867b5065604aee30ecdd65dd53c484f5aa23c192c1187868. 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/GBHLW2301054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe0107b7cba87cd4b734f66ee91f347457c2ed7bebd73949b4db89998d94a95. 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/GBHLW2301055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea41069cd45c35927d860bd69baa41036c340b4334e3df3289e96723d11b4a5. 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/GBHLW2100587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534984db99d04a985b6ab62fbed0229c18f0ca84c53e04341035e174e65518db. 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/GBHLW2004443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fb783a41d23d3bcc1efe562e8071f257c1e899973dbe89eaf7d773077f318d. 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/GBHLW2004444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc05b19974fb179fe710ac046251d41025bc07274bc58d5992c0397b6f42432. 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/GBH5A1002652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901bee391c549568882111adda6c8f6bc7ab136006d11b863fb0d52a7c024b4b. 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/GBH5A1002654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046c970ea0aff55417537cb6f89f3dbb5993d3da1f6a3bee338314a6106179c4. 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/GBH5A1002655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68fb3deefa30b4e7639a70b739d9a0ec786d958f758520c19522b0f42e72c23. 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/GBH5A1002656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cd2958c8065180e6a62d50f730cc2c066415ceb8603255078b1b58b12cf8b6. 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/GBH5A1002657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e37968ea35fdb38911abb02ad5e81ab61df106425f0d2c892e36086ca3ff94c. 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/GBH5A1002659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f87770e83b65ef6109f76e88f0e96cc55de96061d568499c637a8fcdd6bd101. 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/GBH5A1002662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982949650b41990c943efca27ac8a18f34147e647631220f0600be168f962830. 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/QM6N21826555.