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 0x54a22fcb81cca10207cd49d039bab80b6441dde7ed47776467ba6678f0330c0a. 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/084581c5-5698-44c6-8838-c742a2ec38db.json and https://artists.proofprofile.net/proofs/artist/084581c5-5698-44c6-8838-c742a2ec38db.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 0xc20816364185525a45cd127c6a7be3b299be2017768e0f36179f726d8c2ad344. 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/NL5XG2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7152c8572d72b21cfd9efb61a4caae3e0535346943d884d8dfcc68c8de65dc5. 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/USLZJ2231835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc03cad779406d9486b609933c2711c57f7bcc4ccf6f0ef2864b01ef7435de6f. 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/CA5KR2139415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0a29ac00ea9829b2ca6e543f8ee153a3a5f6a5ed0080d501bf7e902094f984. 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/QZTB72287333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9babe6f907575bbd58a5608bc4ccd5821450595777963a3437f2d9abbfb4ac7e. 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/QZS7J2424482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532e5d8bbe1b7bfc2c9fe23d14f79c246d2767f77f6b2f09c3bd55d8a1d79ad5. 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/QZTAX2396939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdf5700ffc369f28e7b553ddcd5fe7223b99689b9a18413426da40cd81ba1b5. 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/QZK6Q2237270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b76ab66f460626db12b3969c71aa3b5ece063c07b8601ca98b1e18689297e6. 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/QZTAU2137013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf25059a0eabb59daa28f36798d7ec725ee5aae42a76f12074be40c4b4e618a. 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/QZDA72048891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e286ea314756eb764d126d8663bdf0c78624bf8ae14205ac4d0e99917e49927. 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/TCADM1896481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398029bc704cb4ce975cd67031fd7a48319a04b970258be74612621d4894dfd1. 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/TCABD1276720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d7b1c071eeed0e15885f9d009593149db0a2bbee06e4e69f0202057fb8fe77. 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/QZTB62365613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3343ad56bfd1da24a4a258cd3b4f01f46abb965663e87e58da6691ce882a5b. 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/QZTB62365614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3307a120c3421eb37802f25ad62f468055d982e565d27a6413daacca71d1aa. 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/QZTB62365615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d6f55354234a7d1133ded9d366f698c2482f28a92df0304526237a03bdacaa. 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/QZTB62365616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb45c5c93bb7c57d3e77f6bd88258f232bc3832d89ea4c26a01fd0dc0f92a2. 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/QZTB62365618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c687197eb80d34d26d05249a94927bc2abca77ab0874fd153080a549a7212. 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/QZTB62365620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdf5700ffc369f28e7b553ddcd5fe7223b99689b9a18413426da40cd81ba1b5. 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/QZK6Q2237270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bef3761c13c7f4761b5909e16a1d555a9f71f76c8b1155006b9682fc1530c4. 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/QZTB62365622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90efd4ee8051184e00d0bfc83cf6b0bcf8acd79bfe51bdbd664dacb561a93f30. 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/QZK6N2218541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b76ab66f460626db12b3969c71aa3b5ece063c07b8601ca98b1e18689297e6. 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/QZTAU2137013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525ce7875014aa7184fc9dc1ac1d8b78702a16996ba9415f59cc93d5bdecea80. 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/QZMEQ2598911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea408f4e686f9bd4e5530a5b3e2f00edffb2f23171d5eecfc7acb66d0241116. 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/QZZ7M2484733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8fce467c482f2515606e91b8eb91144d4949d5d01c4e3087cb87d6dc7f8a7b. 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/QZS7J2441276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bef3761c13c7f4761b5909e16a1d555a9f71f76c8b1155006b9682fc1530c4. 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/QZTB62365622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a714072c0884fbde39f572e84401bd1a0799acaca863a50281da60adf8b1fe. 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/QZZ772446711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c687197eb80d34d26d05249a94927bc2abca77ab0874fd153080a549a7212. 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/QZTB62365620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d7b1c071eeed0e15885f9d009593149db0a2bbee06e4e69f0202057fb8fe77. 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/QZTB62365613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3343ad56bfd1da24a4a258cd3b4f01f46abb965663e87e58da6691ce882a5b. 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/QZTB62365614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f4fa5b60170dbc9e4e128bfccc59082cde4c9f1d976dac0abb4ef0a5905b8e. 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/QZZ782491802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d6f55354234a7d1133ded9d366f698c2482f28a92df0304526237a03bdacaa. 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/QZTB62365616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb45c5c93bb7c57d3e77f6bd88258f232bc3832d89ea4c26a01fd0dc0f92a2. 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/QZTB62365618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc299fbd3c05431f7df597a1dd77054077d436e936068c6e648ec6a4831f9171. 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/QZTB62365617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dcb5ef1af810f8689dae5fd05e0bcd9b2ee37e8a22df05041fb1a1b581dd9e. 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/QZFYY2334128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3307a120c3421eb37802f25ad62f468055d982e565d27a6413daacca71d1aa. 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/QZTB62365615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b97f8a4a34f50492552ab6c82f9a460ed21e44fa40fcd58a455b6790b7cf5a3. 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/QZDA42359398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10113c3fd0a478545ec591ea31b7da1d556d3715e0d7578ff66364f95ece6407. 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/QZFYY2334138.