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 0x6a8060da5011aa87e03d7d4a3c154875b39296a64dd3c2a286351b97da0effa7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/193dd7ac-2e42-4cb0-afa3-cce1c99cb254.json and https://artists.proofprofile.net/proofs/artist/193dd7ac-2e42-4cb0-afa3-cce1c99cb254.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 0xb1cb99cabfdcf9bea23a683834b2d96a18dccdb1a48e522f89b59736cd154e6b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZAUM72102130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa151673e09d7aaee4a43b99086983239056bbfbdf0b66814446137daa6b13e1e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ZAUM72102132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0c70c3744d291fd3311af3c2c4cf4480cf8b025cc87e7174af872d999773f2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZAUM72102135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196e1e9f32e985ca6b8df4472e7b4850ad9b0686b28094f9cdb7c55f870ee660. 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/ZAUM72102136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323e04fb7a51cc10d39f4ad9d7c4deeb78630ae9abbadf3fdd5692d5da3d40c6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ZAUM72201543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b009d8ae8512616558a233ec982acea7ade2b18b3ca6172ad0e55bfcd772a2f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZAUM72202468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5eacfbfbcb616455a56e01548e4899f5cfa7ab9be9f96857f827ea2d02b552e. 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/ZAUM72300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4597871b935b13739240e6cefafa1a0cccbd72207307f40f1a4569a6713d5437. 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/ZAUM72300703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbce344e008da96c029b36fad503468f1caac06e347c76261bfd8da44a4c402b. 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/ZAUM72300843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4597871b935b13739240e6cefafa1a0cccbd72207307f40f1a4569a6713d5437. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAUM72300703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039c252de63919e9ddc65861ee3dde6c2c8b6a44b8972425a49fd33914e8ebd4. 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/ZAUM72300833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacba3b2602135e7dcb471861cab3d0d41d8ce504c4cdff98152920888bb1e48. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZAUM72300836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34df604a9c45457cd002fb188ccb9000e3c36ec6c8a923562b738043ecc83041. 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/ZAUM72300840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb755aeb14f55f190efb9639120e4679415c43425ac035ad99be8ccd571eef21e. 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/ZAUM72300518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826c31f6a785bc5e21ddfa8d6b10def3de66de4c3d2860e0a34bdac7b3258462. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZAUM72300841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe463f82b8141e62677c53004ac6fe40d8037cdadf3a4853fb6c39ab115c19e29. 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/ZAUM72300842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af73fd7d6d87907f101f506f08b5b4692638fedb67d125024901236d3190207. 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/ZAUM72300844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b1a03467c8fd2a371713e1e792275adce123df0a86b66f19611b7f2e5ef046. 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/ZAUM72300845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbce344e008da96c029b36fad503468f1caac06e347c76261bfd8da44a4c402b. 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/ZAUM72300843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc7dee59f61b21f9d66609852b9928944fc5ef7616b01099370ce94d685a8f3. 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/ZAUM72300846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ae2684a27132b20349fe9c340f3ba4161c7b8288bba78ad37066ffb45300ed. 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/ZAUM72300847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8421991edcbd15f5f1a0b911ce6da091ba32e5f4c87ee588f92ccbc5830ca4c. 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/ZAUM72300848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaeefd6890f5958ad1ea23ed04a73cd468896ef4a3c0d3f33a7305d26316c18. 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/ZAUM72300849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1762cde6c7f33e3a184555aa480bca24ccf6921f0f933eb2e25ad2d6825b1e. 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/ZAUM72400444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98707acf0727f0cd9dca7f4ca8a340abd08195c7d81f52eb68360d059cc7fea4. 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/ZAUM72400445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8419f21d7b1c15662b7f83269cac943673a972cd8b72217c8739b9a76d5b333. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAUM72400446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b60c76e2444c39dae354707e475c569310dd9cbd95f73f2111607e07a846cf1. 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/ZAUM72400448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709a3f0f66b1951978c544831495821e8c08a8332bbf2f4b17b4158611a3bfa5. 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/ZAUM72400447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe569de4bbc87e0bd99e2907955d1112a442301ed186f8e589e12322ae503dc16. 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/ZAUM72400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04725843a8bcd98d9e92d2e966dec4d3cc93c053294e3dc2d980005bba8bca9. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ZAUM72400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe445bb025190cc6e472a580acfe4da96d06d0b4fb7ebf5f20577b075ce1c5dc7. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/ZAUM72400642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e11f021f6d34b9d9afa9a86b519d1673c4f6dbf227e37bc54a4f16412be2093. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ZAUM72400644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b583c8f3d62f92757eb15110687a11306a8ea6d7fdd336ab2858ecac89027a5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZAUM72400645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107ebb75355fa3ccbfdab81315d33cba9b9a6839a9260239ef79f96d2cfb1aa7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ZAUM72502257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4597871b935b13739240e6cefafa1a0cccbd72207307f40f1a4569a6713d5437. 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/ZAUM72300703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f89c19e9785ce0731149a63fc64129455a476c2da6ffee2c88297b42b99b819. 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/ZAUM72201524.