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 0xbeae4f1b0d82055c4f71714abc01c89c322e081bf823025b62ea4c5f98b437dc. 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/a39d56a9-df98-414e-bc2f-af410147f412.json and https://artists.proofprofile.net/proofs/artist/a39d56a9-df98-414e-bc2f-af410147f412.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 0x675bbb24976c4b2df0c541632199a78f6c379abfda820517545f7662e13ea6a7. 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/FR9W11918476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675bbb24976c4b2df0c541632199a78f6c379abfda820517545f7662e13ea6a7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR9W11918476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a0fd1894d3abe6382fd0672327bc2b40477d2c38dcbbc91c7bd09825a5f232. 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/FR9W11918470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675bbb24976c4b2df0c541632199a78f6c379abfda820517545f7662e13ea6a7. 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/FR9W11918476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa32afb17defbc4bb981fe199bc53fef84152217e3b60ed3577d0e8b3971c67. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:53:24Z), 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/QZFYW2049513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad8a9a5ca0912d929cb0d55a1812c419686fe989f1a9b0dd1f068b7528a27ec. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:44:58Z), 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/FR9W12118746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca8a800a82c03063281c9564151144f81795683a20f5588db27c0f3d9f689f8. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FR9W12119434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75907497225cff99e65049022937d06b2dfdfed3975b6c42a4bc06c8eaeda78. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:38:28Z), 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/FR9W12115530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c561895027457e8b2071e74d9f15bc0872f35ea7c0ff5bec6fb1aa6fb438755. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:01:15Z), 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/FR9W12302331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966396f3575ccad2bb9bb1ba1c7aa6f607a8a667e3a90127ac04f977feeefd9c. 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/FR9IX2100860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b5bfd45d1ebb71a3ea61d208a42a235cc5b0e07105a9046280590737498dbe. 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/TCAIJ2435163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb583d8e7ed34e7d9e22fc30a7d74c5daf15f5dc55b2ec9e7721fac3b21c94f88. 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/QZHN32299485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed63a5d7e8947dca21e6d36bb438c4bfc0771e0431617a3b08530ad6a083835. 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/GBKQU2496516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6660a252af490ffc3a2c5a6a27345ede4046738a69e890399717df7d571d1d40. 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/FR9W12127318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88aa2c73335f95c5532153fd26c2a21a4864d55832ecb8f0fc722a422a31423. 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/FR9W11830999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4deab6484188326ddaaaac458381ded95fc937ab4c3b0941f6ca80e9d1c085. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZHNB2238438.