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 0x65ac9649bfc6494398a83957a292d2cfc5813d6b9875a8212b832fd614e4ae34. 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/18b66e3a-6700-4e66-af9a-8cc5c275f600.json and https://artists.proofprofile.net/proofs/artist/18b66e3a-6700-4e66-af9a-8cc5c275f600.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 0xb04eca8d7cde706a2bbb7c1da8bc557988a25818121f3c4074012b1603046853. 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/FR9W11218454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511ff4f10b07076ddd4cf8f3f208663d4d7673ac49ce3281382d528c4307982b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W11218457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ee6d8dcd6e48c9aa21f73ded6ae89324de95e177c83c431047bcbd656ffb96. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W11218463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24af46de9db048e6dcc0e4778e7b228968b10029e6f59c55f9a8a9878f79ce62. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:23:54Z), 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/FR9W11218459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc403750d778057154ab697141323bb4bfbc0c4919785b3557ea5b32506b4ab0f. 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/FR9W11502522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc440d5782a363666c337f1c884d00ccb12ff89caafbc621dd954f29031257980. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR9W11718172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f78742e52ec52f01787b8409eda03a6db3826ea053491c0b4ab740c62b3e0b. 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/FR9W11718174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42435f9276e4d40f4ac705b636d39f5e728ac0e99ef76503a780e41a410046a8. 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/FR9W11718184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8547b6abfc167180940e3e6caeecb8bbf30733da2a9ad0b1f893742a25b5f26c. 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/DGA0H2304345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e47790e4f4ebe5cb22e6199be52a05c7b16695c857695361e476c6ebd7d2652. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DGA0H2304346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1a89d07040af3a225e47ba6a0d8f2145db37dc3c79a48b08532b7b96d0c764. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DGA0H2304347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195ca605a28c87b0f43b99a54c2139e715ebed046bff74973115355111b7b01b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA0H2304348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6544738be130ee66fb01e56945f44f59d738b77a114a595a2fdeda2a2b231e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DGA0H2304349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a666d0a6a08d17f74e8240f93d84cb2e082e97bdfd50b4720c8e6fc6c1031d. 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/DGA0H2304350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5c7a3fdfc6dd2572924f00bc75eb7c7f30f20f9230017b49b8c9ae26ad8240. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DGA0H2304351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9304aa055379957f656930a1145b18772a6c585f7a8218eb157bd1c18a42b3c2. 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/DGA062512347.