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 0x36136663ba751144a17a0df66f0c28293363924966bf606059ce4386209296d3. 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/d2d89bd8-8e4c-4a7e-9882-927c662a4ebe.json and https://artists.proofprofile.net/proofs/artist/d2d89bd8-8e4c-4a7e-9882-927c662a4ebe.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 0xa7c10032fca69fdef6bbb625036b18f7f137c967ccae686d4397c56bcc7080b1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SE66N2385283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e03595a056214c9ff604a0d4f3486afa0a48d17e009db68b3b990b9a715770. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:56:17Z), 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/SE62M2325774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2e01cc6aacabfd2bd6242a1ffbfb1e29b67cf14b8b43bc8dc761f5256d4d04. 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/SE6A92370375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd420060b8b77c6ff9f5995cbe5a0b567de84457cf57bb139cc9aa49790eecbc0. 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/SE6HN2460667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cdc12452caa87c84b40cf547bf8b24c0e876917cebef6b41c6fbac2d142245. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/SE6I32479255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66bd7da34e59d932079cb5950898ee4f3b2024e3aa64b1570aae9faa7ca75da. 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/SE6QE2308031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5163639ebd0e31e6c9cc7a39828e2ca10f6bb6938f1e13ac4242599558cd0c. 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/SE6I32492605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0ee4e0b3a131285366e3091478b058fe86be602fcb6e038ae41585586d4680. 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/SE62M2370306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ce375871101a66662d273c856b4007350d21859900ce648eff1a1406054c75. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SE6TI2376068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ff8ee2e3d9e30ee605b1aa0038325d4e98859e9abb824133fd27a5669fe4c8. 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/SE6SA2317925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e80056991df26ba23653801a0d0c9f4a0e74f74469af611efc4c482c385512. 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/SE6HN2425612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e03f812665fd12edb5f45f174f7af12007776d35e0f09da04d79cea7b371f0. 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/SE6I32447789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac653749bdd1d59cb29b2d8f69422fa8e47691acb85bf0106e6ab4069cd4d68f. 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/SE6I32447791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91917e59be11a5e49214ecf847f4a880da49463daa757bcb4a5177868e52fa10. 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/DEQ022111631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e80056991df26ba23653801a0d0c9f4a0e74f74469af611efc4c482c385512. 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/SE6HN2425612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb46613341e086c448cb8c36ca23c34c2c82ea5712cbfafb4aa8d49eb1bb5956. 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/QZFYW1905485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d78552902fa1969ff4ef49b332bc25e8de1ed61fabc69311a8366de9e62a79. 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/QZFYW1905489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e545dd923b8313e320a837f8483f8765aa749092eeb7c227b20e37ebf3d8ec8. 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/QZFYW1905490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8af1e6b836ad1b546048c76c6baf28b2b50b718f612d654a4111ca2cc02258. 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/QZFYW1905492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba93d8db6faae22dc2bbe7365cc42885337db84e784dc520e6d3766515e3cd4. 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/QZFYW1905493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ba1be9ce81286d2d0c6e422da9b24f70ead6560b1dc0642951494d94d1ced6. 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/QZFYW1905494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80dbfeecc5d3b016242e817e95db9a17cd82bc72a491274a8544f561edf33a5. 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/QZFYW1905496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445169360e319b29d84ca262e6d8fe527507d98ccc53dc7b1039562916f55ac9. 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/QZFYW1905498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883ff470ed1497622916a65838c419ffa9eefa2bb6231aa719d3f0cd32b960b4. 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/QZFYW1905499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d3327300035792fbcd346fd39c1732bec1294ed08785ebdd3d3de769a42070. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZFYW1905501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8255adefe54510190d30f2960cf1fceb9a14b50d12234397d40806cd945ec1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZFYW1905502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a026a1637fee8fac08a714de9b3b40226d9749c947ff499f0ea1c82ba3358d. 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/QZFYW1905505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f61a9375a6d2f7c70b8b5c407ad8004ac8332264e298382cf9b4ddfd67f41e. 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/QZFYW1905506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4390f73a47cf7e864480486e7a8ff8e245c48aacf3d618974f8489fee62021. 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/QZDA72205261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c56a6d63cc9ecdc3a9247627673f62ff71a9111111b75f48cf5e25589ca356. 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/QZMEP2295602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94add43940848adbb9e6268f502f26d0dcbdeeac54196e953e585e996545d6fb. 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/QZMEP2296727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3edd144cf2bce4fe94883227de7145c610de59d7b1c8ee7b84f30fe003d2fae. 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/SE66N2245222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a867ba5367dbe5c7edf3f92c265a27df029b75466bfaa9aa7b90429bffbac29. 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/QZMEP2296726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf99c73328c1efbdb8b6e694032e84935fa3584eb4a8abe4da0676742e9b9599. 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/SE66N2245225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c8c9d8624d323be17cb1f6d2b396b6d7f2a736c8bb7478da61efe53f2151c6. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/QZTAS2231248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f032955da84c59203e27f51e7d333efdecfc15feffe7d5f3dd7a8d4d55d16c2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE66N2245226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00df97646d9a9d9a9b535e26bac62af9a66de110b28b014ed2d768600c4d4baf. 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/SE6QE2490763.