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 0x924be8ae9f7028d73707de83f6fe4f9ec7d7d61fa6176c3d7d70f8658e400c10. 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/1703a7b4-d73d-4075-b43e-f30523878d9a.json and https://artists.proofprofile.net/proofs/artist/1703a7b4-d73d-4075-b43e-f30523878d9a.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 0x69abcd6e715f53f7a7cea8ea10e07aa1fed1ad66f171689f19481a9ee29da571. 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/SE6QE2419287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731d4e11798238e4cab00afff953134fbe976239fbdd2125f4d008dcf3470ec7. 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/SE6I32316124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66a3f41b8ab1f0b1649fda9f942769984bce2e5d854f43a47a08f8096584370. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5752475758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79c30aba18baa36d2cae95fddda153cf472e1e1af37f3b1285a90d9a460279d. 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/SE6HN2422261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49800a11b1a6cb71d1863ce2b8cc290e03dad1152d744cbc9923d3265531f367. 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/QZHN92475065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427a9c005e627f7751d62d7cfa4dfa7b90b97bf4463b9bd4983c80482b56aa06. 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/QZTAZ2495222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe313ae9e6ed85f991fe07483da271eb840f51c2cef63c9d69cc0152c9c9fe5a3. 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/SE6I32416522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff4b3982d63338df8710341f6f1f857a0744d800f479d92b3b8bd9f1ac91893. 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/SE5752417566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc2b0b123fba4263b1b80140983c74fa1d62a5b76d891a47f19c185b2255330. 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/QZES82403242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa427ab4f495ee06c20b733da3231c9a07f6a97dd590276f41777f62d07dc3074. 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/QZES52441222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29238cc890431c04c47c0d406c19c7dca554b0f28ac2ad90ac94bcfa5d8bde20. 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/SE6XW2305361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88da901e80f64386bf1a9c3adf76e373ec046212793df2b22091dee5acd9c260. 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/QZDA72393221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376eec0c8e982fb01756c6c3fa13e67702c622f0bfa1bfcf43390b485699f12d. 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/QZDA82345250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9192b058300bcb18737df735abef82d015b0fb7187ca26f5cfb8a5e2e3c3a26f. 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/SE6SA2453090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f14b477a2226479c6c9a732b162aa7869ab6da660fc4fa29b609a3159c65bb. 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/SE6SA2453091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cad1595199a66eeb62d30b52a3c4c80fdac858dfe0c03d6c8a98b9e84668889. 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/SE6SA2453092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69abcd6e715f53f7a7cea8ea10e07aa1fed1ad66f171689f19481a9ee29da571. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6QE2419287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa36f7e7484c84d8604de5cbd94e1dfe39d52e2e605d4d86042e6cc5bca93fda. 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/SE6SA2453093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b7a665daedb00846527af6c42ae85cf00a06d25070614114de064df57327dd. 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/SE6QE2468464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f9e8c818934df9f6ce39520f916131c0f5c3ccd4399163ccf3c436be9a2a1a. 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/SE6SA2453095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fb77350cac819bd06f9cde25d0e72772ad204bc17ed3ef4861fa786683e776. 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/SE6SA2428092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b02e2b584678f241e97c536b9ae8bdbe4c9abf57865a616c06c63e6c6636a6. 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/SE6SA2453346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55173060b8cca7d9e849f0047a5c670896cf9df10d85f966bd665fb1ecb1ab1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6XY2527146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02100ca4efcbfed689576966b2f70d85132aa98b2755f9d8769e1ee807080fd0. 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/QZES72597450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc350f7acbe0679ae08849b12bf244d0bf10bf856cb7a528ad22eb8b8f4dda134. 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/SE5BU2561471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652ee265663cd21d5ded3ad5a17e7eb40749d08405c2ec0bc5d1f228f5a283ef. 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/QZES52571094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94e81a3b639c64312731e80001ca617413e8276de3446950be3e75fd2e828ed. 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/QT3EZ2437672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510954f6743277dc6f1f16f2c1f907782aec4780641860ab28b0c2e20f9c991f. 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/SE5BU2534387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaff239c3bfeff7ba02f6f524b3b13d8473896620f99c5bf473eb55ca30aa579. 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/SE5BU2526113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaff239c3bfeff7ba02f6f524b3b13d8473896620f99c5bf473eb55ca30aa579. 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/SE5BU2526113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fb77350cac819bd06f9cde25d0e72772ad204bc17ed3ef4861fa786683e776. 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/SE6SA2428092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1843558fbddb261dae840c3e7110b9fc53c6f426faaa0c332bee08c04bb9b2f. 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/SE6QE2482389.