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 0xdfa87b1c066d2e4cb63fba6ac420fe0102203c7a5579d890265deef3a8a9086b. 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/83bf7be9-19a7-4b1c-9075-95b4dd69b620.json and https://artists.proofprofile.net/proofs/artist/83bf7be9-19a7-4b1c-9075-95b4dd69b620.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 0x4f325dc5b9b746bca23f510056d95aeb858025ba51b5a97fa869d26b851f7070. 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/QZS7J2358625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1494d22d2670e6ebcf1ee355e8852eef27a18fa528cd434ed1010af36b440d7b. 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/QZK6K2288052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7873f059bcda265ee5f9acf937dfa57478f658ef048fe0eeee4b569b112b20b2. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZSYP2386088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d256c96bb147aea3e65505878f3dcbeb615353766f9aad0d27008272b469f6. 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/QZK6F2483457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ce500b9a0ccc332f43100120a6b1d5c84e90909a0dd9ce8b59b160b5464869. 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/QZQAY2384962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cea2d38dfa7b60b45194cb23b45e99ff9a46298b58beaa37b918db964157b1e. 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/QZTB92257112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e253fa8abbf9ae68bbc2b6095af4c434b12f8601018bea9110c324c741765f. 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/QZNWV2337973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8f1f33f9f6f1309852b5c6b1d711b9d6469f32797937bbfd7cfd1be8c9279a. 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/QZNWQ2450720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87877efa827679022a9dadbecd0d29ad738e0406db8455d2f7fba6798a68bc26. 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/QZS7J2367574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f325dc5b9b746bca23f510056d95aeb858025ba51b5a97fa869d26b851f7070. 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/QZS7J2358625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7873f059bcda265ee5f9acf937dfa57478f658ef048fe0eeee4b569b112b20b2. 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/QZSYP2386088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebec7dc117c950ddc56e02e7a5044bd74fb9700e10eab072416ca5156c6b406. 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/QZS7J2319757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b48e98a158151915cbf51ea35c909a1663bbb169432d586220f60454447fca. 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/QZFZ71997032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52349b11f4c1612823a382b67b7dfec306e32567915b501e40b61b4995041dd6. 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/QZNWR2497512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59fbe2eb869ddb286c12ef5a6e77ae28fa3a67a326a63d2cb1e9c45712e44ea. 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/QZFZ22413762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9aa99eb427883b650bc88ea41fed57572477c712c08444525d1c6ab37f2974. 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/QZWFK2377360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56e7341e6813334b2e003e0878c6f406a277e353a5b92a46be8e23f7e8f5725. 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/QZS7J2321474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bed414b6f840f3e0aedcc6961bd6eaeb244dc0b1059228845643d07b919bf19. 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/QZDA52318598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71487b5838fe1df02e2a518f8cd2b08fdbc0c2a227c624edfd4741e45273a77. 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/SE6XX2217026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4a83fa86ac7795f47ce0162cc68cd7ecfd871157163960a042ac41fbc0a6f9. 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/QZHN42224781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777d8b413f3e11752ed4f2bfb473062440c03ae8f5cf0d2bdadf96543513fdbe. 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/QZDA82263086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d96e50d88f96aa8fa61f62daf3d125c0ef9b74be30008e77f83922ebd614b5e. 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/QZFYX2206449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70a02caa4eb35019b787601bee3d030f5a0a9ddc4a77a17e81358d72e7d7ca9. 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/QZK6L2113863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a51aae1efcb0e0300d65a35d9420e3c2af34a708ea477d2c0cb37eb522afd90. 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/QZPLR2084345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de7336d51efd0b000473955fc66481bea54db241f5a7b8e62d8fb8ddd673fc7. 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/QZNWV2073938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36680b1abd9cf58676d8e48fe581b0ea099eb77be308d631c7fd58461d9e61e2. 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/QZHN32009569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764436a16fff074b3112b9f445fbbd8fbfcb3b1597e32e54540c12a0ac05e1ed. 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/QZHN32009571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefefe7a2bb95c39666ed9830f7d4fabf41949948c9dec13401b2b0107643fd39. 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/USDY42007667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefefe7a2bb95c39666ed9830f7d4fabf41949948c9dec13401b2b0107643fd39. 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/USDY42007667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adf85696d31efe2ca9dd087820ec4c1afd777cfccbeea7b7745c1a0becd3757. 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/QZHN81931171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e2427981b9b4d185df4547ffd2bf463cda1147f28fb5c7664162cffecccf02. 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/QZQAY2401934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e2ad589ad247e84d77545260660df2f93029c5154d01c8973c7b697e286007. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZQAY2443730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7575a0bda4e64e4c154f834c178d84903ecdcc669447f318f19c57201eb2a010. 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/AUMEV2432211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef90c053596d4285940ff3aa49791a2af80527ff47a8acbbf455fe85366f9e4. 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/QZNWS2004562.