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 0x2cbce4b4f64f7874a826eb65cbf2b05697741312c270b991f5378242baa092ca. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ac79c7a-50f2-4793-b950-2d9dd9528d97.json and https://artists.proofprofile.net/proofs/artist/4ac79c7a-50f2-4793-b950-2d9dd9528d97.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 0x9b9a067d5ffbc858d3d4dd769db198a79d327a1d7b98866df4ff634b7796eeeb. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCACY1713135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ed3dd0d28b406eacab6b71f511580150d64a4ba11c40c8866a7eee712d3fd2. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:19:23Z), 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/TCADA1797260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e8508b72bb11e5954a9201c403c6853f420fbd56bf01084913cb827ef04fa5. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/TCADL1870113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6ab047d24d4b00b94b6859bfd951789fcb5a653f447ec8407d3399da119bd3. 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/FR96X1993516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe93d79f656df9293d83b62b986b9fede75a79a312feb347c124c3a77fb6655d. 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/FRX281924239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414774b5af9722285acccc741aa7383cf94f148421dd53e14d32baf5282094e3. 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/FR10S2021494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7f3e6e6a9c7507feb65de09eb2c6ced42943874b1463d6ae64e004c7a80b19. 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/FRX281956181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8883c73aa95d1e8ccda37bab4461bbeb4759957336f808ed131fcf22b9b3baf8. 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/FR10S2021495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad8d59ac9303b1d2ce29e3aa742ad6aec6bb7f20a8a952323f8784422515ed3. 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/FR10S2021496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7648872d1091210c939658c247117efd6422f7c4b729e6ee1e2f158d7652c60a. 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/FR10S2021498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d12477efdb13efe292e342def33230212c2f2bb7a960c6b21b1a50b451b23d. 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/FR10S2021499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6ab047d24d4b00b94b6859bfd951789fcb5a653f447ec8407d3399da119bd3. 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/FR96X1993516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e746b0afb0e083d4905a903ecc10dc12849f9f184945a16513837e47cc26ba. 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/FR10S2021501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97eee1bc87b50f0da222dff92843585dc4ecd342b4ee3ec569007abb3b0b321. 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/FR10S2021502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d8bac82afa9a84fffb54272829f207f919a9f69f22fc2a837afa0dca3ec52e. 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/FR10S2021503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640220e2a744c02a5f8e01dea36afac160536c1fae87a57aaa3af2951edd5af7. 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/FR10S2021504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a097efe328c66b0fa01ae5d236acad16ddc8080425f74ca1eb86baca0982d76. 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/FR10S2021505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046f3c31253e714ccfc8c771fc4e01f58bda40c351fd73abc3d4a8245ce8e3dd. 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/FR10S2021506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1dc79e3d7897c1f1fa67343b0d0d73db605605bed87c0c529ea4688a263d89. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:35:59Z), 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/FR96X2215202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71003432921f738cef305c6335c706ae9bb7ff82bf3fabf646bd0be1aef46c92. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DGA0H2315034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd030ef0dcd65990f386b2ffb2086cb1942f5873069bf8ad7b8580c9a1789a7e1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA0P2442943.