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 0xc444c32e20b81330246edd0021d3aa9898ec4c94ea9e1c2bf727c07c112b0d5b. 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/331d1429-c544-4a45-98b1-1b120835a299.json and https://artists.proofprofile.net/proofs/artist/331d1429-c544-4a45-98b1-1b120835a299.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 0x02fff534eeab996967a61587dcd3e076eff8bd10dbff25d182c1f85d4e060f93. 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/TCJPW2345540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fff534eeab996967a61587dcd3e076eff8bd10dbff25d182c1f85d4e060f93. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCJPW2345540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f652faa1913623b1a8af84083ea7817a3a9bc9d3feebec2aeba76a806762426. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCJPW2345544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe83b384ff7c99f2a1ec909a4a09efc8a353b9c967e965458f9443462b93cf6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCJPU2370670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe83b384ff7c99f2a1ec909a4a09efc8a353b9c967e965458f9443462b93cf6. 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/TCJPU2370670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e354262bff5617d6cfb314ace2a01e16e9a548ed804f05c07f003d28e49a5b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:43Z), 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/TCJPV2352262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0c3759593bf68611e8981fe4fef0c0ed70fd8d42145bed1e4b8f82b2ccfa7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPW2329654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d5a4209d980ded4aa3e20ac5654ac269e0cd10543eabbae41e9f8f99bd80f0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:04Z), 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/TCJPW2370683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1a0d19a42f2c3456689f5a781e4c070ada1005d3e665533578ef6a3c350e17. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPW2398118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1de3e09c2ad40e83c13f24f95f546033219790f77ae78f7db94fd3c880af167. 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/TCJPX2314603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22ffcafe3013a172f78fb9493d55dcffd2dbb8a98fae64f7fb663726e73474c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCJPY2314617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cba186d1bbcc98c185731929b76245a51279ace2b25c77c85553dae159f81f3. 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/TCJPY2314628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00a6605f986da3e6474f6706979701b3e96e00d1522e73ada0f12eebab8d3f5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCJPY2314633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb78bd7508ffe41545a75a7ddf6baa125add810476e6083d752f4138e4dd079. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPY2314636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cba186d1bbcc98c185731929b76245a51279ace2b25c77c85553dae159f81f3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPY2314628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9312039924005a071c54e12cdc2b8233ed7d6f50df357b2726e611990511ed. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCJPY2314629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00a6605f986da3e6474f6706979701b3e96e00d1522e73ada0f12eebab8d3f5. 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/TCJPY2314633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb78bd7508ffe41545a75a7ddf6baa125add810476e6083d752f4138e4dd079. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPY2314636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e2cb43c85adbd2f016b17c4e79d7b02af1796a1e3fb4245e901e889f94e976. 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/TCJPA2444418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e2cb43c85adbd2f016b17c4e79d7b02af1796a1e3fb4245e901e889f94e976. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPA2444418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d15de02e3158ce467997213c81bae952f72e89c53155045e1dab6a61c17b5f9. 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/TCJPB2424359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92164413b8d6285248197f695f0ae318cfbfbb0c0663464cc90361cb40eb3ef8. 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/TCJPB2441553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a9b9459dbce777095ddbbe6c1801f9e717a121038ff30a3356c71781075c6c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:43:33Z), 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/TCJPB2441557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92164413b8d6285248197f695f0ae318cfbfbb0c0663464cc90361cb40eb3ef8. 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/TCJPB2441553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4890341c8048df6294afcb92f747250e2503680c2e7a7a58ce0adac73ae85be0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPB2441562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f5ec699325735957fe1b8ca468c1ce210438ec252f3b71d3150b18a4cbea1f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPZ922501280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01eb136f8699afef9bfd683d871353ce22032c4e0d250c96c50eb6345e079a7c. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:27:43Z), 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/TCJPY2493758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb12eb4c1fd25cc4c0d2d7836190a41b9893e6ebc6771976bb1d6fd032a73c6. 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/JPZ922501281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdcde0b89b98ff01700e7c8beb2eb71de9f765217abf907f4886b0596f7c9ca. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/TCJPY2494138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226156ac347db2cf069855e5c0f57fe44c92ec75c6c5e78ea416ff979cadd483. 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/JPZ922501283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb12eb4c1fd25cc4c0d2d7836190a41b9893e6ebc6771976bb1d6fd032a73c6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPZ922501281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee2be68828781daed64a696e389cff032d5ccfa723dd572287b2c5ab07c8079. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:47:41Z), 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/JPZ922501282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce700015e3e72fb455575724af93604c077adae694aea02389c0c2d35d6d8a47. 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/TCJPX2311209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27abe637b05ba697989f1a8bfddfbd23ab9dd41a723ab6ad04ea2183c6bd3ffb. 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/JPM591001671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb72b1ddb4cc2e7a7a68f76437ccb2248c55bfde3854fda0edcf9f2f1e8a517b. 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/TCJPW2350276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe43dfa08c50fb2ad2637592cb92cb121f368281dbae8e474aa75431924f13f. 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/TCJPA2485743.