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 0x951609409c16f69998c9bcf6dbadb66871fb415e6f212fedad311157fed3e55e. 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/b29fa791-f2c9-4d03-89a9-4a704f5e57db.json and https://artists.proofprofile.net/proofs/artist/b29fa791-f2c9-4d03-89a9-4a704f5e57db.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 0xc8bee528ddb316cdf29a850b8324fff7e957efa8f9a53593ff3bef358615f434. 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/QZHNA2003918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa0453ef7e5b900e40193268747bc23d6e837bf24b18a5656ffc6ede2869850. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNA2003919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf033ff157f25e52cbdd7198d5a288515c3355247e0d93242a385094bf9b55c2c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNA2003920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedbc872b7567f74b881d3ef254e9b14dcc117d99ff76981b30a27cd333881a0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:34Z), 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/QZHNA2003921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f8415acbdac78a39fc610fb716c15438783192c832e174b7cfcdb3f280c903. 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/QZHNA2003922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cce49928b9fed6c96306f1eb992136bdc3b09a1997457fe7e1892bdb324c5a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:49:04Z), 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/QZHNA2003923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff5c2123c4840ffcbdb52c6018f815acde15cbc1f0974a618b08d7b5c0cdc2d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNA2003924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48d880292ac4ca5fa1e2c5d32cea02e06acd4f7a785cf419b09b13d209fe13e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:23Z), 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/QZHNA2003925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c890449a4723e4d21435384b754d3c36478d0553e76d666768c9a6e95ce1669. 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/QZHNA2003926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55674ed9fcfced7cd2615bd4ae2f79627aabf3be13326b6fbeb66b4f9676e972. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:59Z), 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/QZK6Q2048746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a2b35c7f844a54429cfe59498c6c87e16bb75d8127b4acba0f256885c3851f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6Q2048747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d08d44c0ba8433027374ab55a3d9366eb14f0083343fc64c1480b41005dadb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:09:38Z), 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/QZK6Q2048748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f702f7366b5a18dba3ebe66f98065ff87b1f9cf246a87002149cf859d65da0. 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/QZK6Q2048749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ad09882bf018e7ab6990bc1ff9e579ff93cbc572a27f06a2fa0c4994477380. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6Q2048750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747f13cd87d3454d96807ed7f9ca9d1c75922e6e319f6bdd720a5fb432520ea9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:41Z), 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/QZMEN2101053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b57eace9dc80bd197a846aaa6cabaae986735879022be6d7488f9b085f8c322. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:05Z), 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/QZNWU2294150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d18a862cd3fc6f52372b09e9deb5842fa32489951ad2953f48c73ee501dd301. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWU2295680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd55a5aa1bcdd69c7ef49801e456438b533eda55df9819342f7875de1ceb139e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWU2295681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2af038a094b2a8bd49ff9f1705ff273cb6f54d625cbb2e56e271c65aafdb733. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWU2295682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f84c20556b44b5eedbdca4c27be1cbccfabb86fc64a0ca840e7bab5521f4674. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZNWV2283859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19cd11ce06e618171204a02eb1b675df70becd0ee61ff7c3a52ac83963666a0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWV2255518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dd8ab215070bbf0b0bf427b60b812ab2b9ad3d9b3a396a0b4d170c35a0c463. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:29Z), 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/QZNWV2257439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c0179ea33e62cb4223b82519feb91997afdd4e22b2dfe0ab4e6bc80483a72b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWV2255507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1c7df63ba476526307fdca60e5bc9e61aabdb65736228777faadd6184009a7. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZNWV2255508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974c2fcb020c44e139649a0fdccc14cbd283a9b83ed47b9b604138010627d270. 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/QZNWV2255509.