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 0x0740419b2a613fabf1f80a6fcf27c32176bb381bfd26a06edac6889cfbf578ab. 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/c20a6388-bea8-40f2-91f3-cacd26c5fc01.json and https://artists.proofprofile.net/proofs/artist/c20a6388-bea8-40f2-91f3-cacd26c5fc01.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 0x92f492c50bf8d85655fdc05e07456f4006d7710f349dae279cbeb5a580e8542f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:41:23Z), 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/QZTB62254410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1b35214c6bbb5e50f5adc82c3e77dbce9477fe6f672b3e243ba074ecb5465a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB62270381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43f94abb857f51e058fb30bec7d2a96fa768f8b8762d628a6d7e9afab1a0ce3. 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/QZTB62270383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacf182214a0558d035ed88af66d99ee5740dcf9afed85d875ea6a74898b9bab. 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/QZTB62270384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9880994c250ce543acd9c048e9571c3467172a876bf1b80a5cf07f622e065924. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:29Z), 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/QZTB62270385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b2e1084b9273a62b10b0b33c30c3a18562d9e989f45e1ae48eac99ecbe6a0e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZTB52295539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937db0a515cde1281bfaf10802d8b6ab80d0cf85f84f43ae42151b887c730aa7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZTB52295541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708f443c6bbb6b1090110fe6710c7e712e058ec20894bf48c06867ffddfd1d53. 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/USQFK1200990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbedd23a858da91266c8f348cbe41a0d52244aef4a9acd4079dba5d62856a5f. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:32:01Z), 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/USQFK1200994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4740a8c88cda7d59034c0337d48eeb3577a0181faf1625acd4f534009ad5ec1b. 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/USQFK1201281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433149d3c935b7f53b1e23cd60c019a700d58b8d081afa84d778ceff8f43fc10. 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/USQFK1201286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487b64bd3ef6eacfee3706b7a78c6a95ce87ead4efc40ab0d24e801ab88f8275. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMHUY1557791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186cadc0de1bd6df788dd4fdc1edf67fbabf11478c381fc7064902683397ca95. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMHUY1557796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8262df74a69b09ea3304c8c29707ab77917952c10317d7e32253100da72670aa. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:54:28Z), 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/QMHUY1557798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b2f7adeea53a227390593f14ac4d85e3182d567a6f631b618244ff967138c1. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:35:11Z), 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/QZTB42267948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d59ec62302a6931451fd52721613645cc9302dad6ced2ad3d2f6d4ea82aa99c. 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/QZK6H2302674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ca989e72e422b4eedcfbc0e2788a2d3dcd0012fb30132d8a1b96ce38c8e82f. 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/QZK6H2302680.