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 0x60911b412dba404c6b1fcce7b17cd6a55c146c35411964a6f5919d80fbdc1487. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d57cc96-6365-4048-b7e8-388a4acdb3b8.json and https://artists.proofprofile.net/proofs/artist/6d57cc96-6365-4048-b7e8-388a4acdb3b8.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 0xc6169e77ee34a4825bb005126cde0bf72968bc0ccc5a7c0dbefa70eb59546386. 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/QMDA72439422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b20f8d85938d5e184e23465eef88125f902add7f009c4b4e18461768eaa2b0f. 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/QMDA72439423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a1d9c66b450d42ca55d9bb3f91743cf9f3950e1e6b8eb3fa084e59662a2349. 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/QMDA72439424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4d6305a48cb11131d5074d24314cf5b4e5fb6d875bdd595cdb9a6b760bd011. 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/QMDA72439620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0056d8c76cebb36f868daafebaa17ddafd5de3c657c1ff81f46b8ee9003017ff. 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/QMDA72439426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca105d2ebfb7c0d9ea6cbd54a99be6ce9cbba9f3a09a501052d7d0115a6ecf6. 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/QMDA72439427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb9676ee82160a63c8d2138d7b62740139463cebeb4cf3d7da7536c42cb52ee. 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/QMDA72439428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779281d0860ff9e1af542b276d934b2adbcf7f330a0de529e0bc83451505d65e. 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/QMDA72445752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85514dc73ec66acca5c277a082c55e02044007d236997d77565365903231147f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QMDA72439430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacad0ede5a1e3e588bbc25508ac35eeadc308bb8d0b678402cc8a2702d69a5f3. 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/QMDA72439431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a4963b838e2ab5ae9d5f2289e01af656c5e214d8cf4c312e3b48fff7cdfbc9. 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/SE5BU2358371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883a2317c6208282df8041926fa3d3868ca4f120ca50a1fb332af01879cacf24. 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/SE6I32287518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a00519f428e7f1684e92c897f700c4105da7d6fe95fc0920a6122b675939331. 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/SE5BU2358372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934ee10fd9b9577a72152deb7b7db28b123a960b8548cabee7c2a9407feaecc1. 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/SE5BU2358375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92663b672239341d3e84d9934c8c781107179bb29188b40f59fb72981bc9ceee. 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/SE6QE2012086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe519649ae9c894c5c85576726610d4ed0d15b48d8a48f50dd50e599db78ff41f. 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/SE6HN2455285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883a2317c6208282df8041926fa3d3868ca4f120ca50a1fb332af01879cacf24. 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/SE6I32287518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3b4a1ed42990e99dd94a49faa1160b729881b2aa6bab072cc5d4f1664d4b66. 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/SE6SA2164180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d72b5ceafb5be9afe874fa37cfe09dedcdfbca1fbf7bc92f63dbc5fe03e3900. 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/SE5752004736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9da206c1d7fa6a49eb7bdfe6eb305039c17ad84c75c8ebcdc978e867e1c868. 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/ES84D2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa11c4378f12a2e4b2a92ec0c2a1dd36d13a1054038fe06af720476d378fbd26. 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/ES84D2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3c0b188834d294902b88d4f30baa754c2386925c04bb3f320802107f79e2f3. 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/ES84D2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c33056874ee73d8831ff4ce54c2c6ac75c229dc0f802790c66a35ba95be7640. 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/ES84D2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6212ad23342d7dc5c94c8c32eda317b4cbfea607b1e1234a4b72c44f3bb9d6a. 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/ES84D2300031.