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 0xdb4a2a0497a23ef1abf2b6946d1c50a9cd7ad967b9bdc405510395dbc221f9e8. 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/ec001622-60e4-4a49-9417-57a66be285e4.json and https://artists.proofprofile.net/proofs/artist/ec001622-60e4-4a49-9417-57a66be285e4.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 0x40ec5c8f56bcb50ed03a144af730df94fd09a23036adb8ba13ecdec05036e865. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZHNA2265474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d69c971b18b21dad1a03a744c726e5189b10f43f672388417924ce0bc0d4803. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6Q2225642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abe0e508a692faa3656f41fb6692789d258248ae49f9f481d1c620842eea2ed. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:20:47Z), 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/QZK6Q2225648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18168223e7844e53381d60850bd6a7252b7c15c778650e0fc640f456fcd327f8. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNWX2298304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccb1a06587749c125448e364840474c5f45c7e8771a6b7c8229a63a419c220b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWX2298306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21758eb193c1c3173a82815a864b339c7d936a87cef5f999afbc60baaa682923. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZNWX2298311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ff5c84d87d93248f80a009f7027e44d97bb7d35c53e9d6f21298d3fc3bc107. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/QZNWX2298315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe791065e141fc8510f9f516f7ed29e8c345b124d1f598726eec0f87577467e0d. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZPLS2273201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea819bdf60621fa3445605c1246495ece8e229ff0d802edd603cf52cd72d063. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTAU2254708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9899f2eaeb3e1d4926599d5f131caecfae06b5686bada4e06c79deef3bbab039. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB82249481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c01047e01397dd8a9136674d667a98969317c6993e70c8c45b8a68a5965d7f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:55:19Z), 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/QZTB82249482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122dfa0bcef18e672c660520223af28325b5727b1edb376d0d2c1f4b02b274fc. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZFZ72389082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23486fa7ce32c2a6cbb3cc4ce163d4abe4700fc55708165cda1b5aa14cfae99f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA52311746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518aa2907fcba69f3b662ce2818a76d1533c4f052a3963255e51f9c1ba8b06e3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN72378374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812a73f21b65f9df806872a827fcfd44b6261eb8df2bd7dbd56ca2af3a088800. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:03Z), 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/QZES92302952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd267d3d92a9010b142b732c8764669f5105ed900bd00768da471b2c201d088f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6M2341620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf5a64be02af2dc3fea6d3e7411749abfbf2e9ea8e3fdfdd401bcdc872850be. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWX2320576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1f26ecbd4a24d37c1c470fe1cd560afc1f3b93f259c9b5eaa0c8c3f9140218. 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/QZNWX2320578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4820a9d1c2cbab1f469f8d8af21075579abf924dfcfd50867864a7a2e36656. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWX2320581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407176219be2228a9ccccc61a2f57f0c11b9c2d5b740ebe1b3cdf9867f19fe88. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZNWX2320583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c7722652ff09c80db88a9c9cb2f9fc14535c216ae8e7471acc1cb5be797701. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:33:39Z), 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/QZWFJ2311099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb23a101a7a02be6657b91c2228c1e9dea7c01cca7041d30f8a1df29c9dc53f2. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZWFJ2311103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6f80e3649836abce07f7c5665b2dd1958e9b7c741023349b96fc5b4323c8b9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZWFQ2337869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f49e1695f4fdd77cbb83c252965a560d9ebc2b1e03f0b0153accd474a286a0e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFQ2337870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9a4f2f712257d13366731807b68bdbfab58a3c4472bdd4243ee72a511a1b7f. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZK6P2442921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666224d682310299ece390f0006a34e01d1a4508c84d578cb0f35e823faa0e38. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTB62459957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5b94d0e1fbd8bd5a163ae60342764f1cb633b87284737e9bd691d78f8d48be. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTB62459958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2756df2c7f1f72d6d6d88e81835eb5fb30345a6451fdca1483a7e78a67dd07e8. 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/QZTB62459959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24649c774a0f942dc022a0ae12a6ddb83dedbadec97fdb843fd9e4ea086fdd3. 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/QZTB62459961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0e2fc0503e7c0dec7d892a9e8d7d4721183981a4d4017972f4de2644651747. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:32:05Z), 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/QZTB62459963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43869eb1c8c5b2d10f9163a8acd7e7e9b39a0de20c7aebe10fc7d29b1b63b3f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTB62459965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18ff63b9f84d45bf8c61e8cdca56fada1bcde7ed20274f0b7e095efb12c5ad. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ792476344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6847d30a019d141125d252f1ec4e079fa07906125e355fa9f65f80012a6939da. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ7U2476807.