1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf1b0c0dfa32795cf21098292a72ad6164e2937c8bdc1369fcd27da89ee9cba3b. 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/72723244-e559-4cac-9036-ced50569262b.json and https://artists.proofprofile.net/proofs/artist/72723244-e559-4cac-9036-ced50569262b.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 → block OTSBitcoinBlock must exist at that height 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 0xf68704bfdbe7d9c6d686c2831c8f2cedf47b873112df91d08b34241d4a5ef5f9. 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/ESA011303915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274ca4b18af5d6920ae979c19ea8783151529c9388f9784623b545087ee8c2a0. 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/ESA011590187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e30f2566e48f13a727190d07a48c7d653200ea00fe0df8ecc7e8b4ccf7d3b0. 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/QZ6K42001195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e018b5c39e1ba9441e447963c3a85979d04598dd9ab22dc5af8b6ce15176790. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ6K42001197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a21904aea402b3afeb20d753269ce69f645d8659c2e1a47fcd03a470642ccd. 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/QZ6K42001199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5331d7b7ae3e619b0bdeb29f3b4a7b7f0cc4473483b3a1f9444cba7557e2f3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ6K42001200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a0443f1a1bbc9195f4578bdc1a4983f1afc709ef765ffbff841f97935bf88a. 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/QZ6K42001202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13eee596204d824850d491c776cca2703832ca11f066539d4d05126a57fd725. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:46:45Z), 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/QZ6K42001207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b44580fa4f06c610060f5aba3a5973c2aaafa1cb0507542a635c447a4bfe05. 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/QZ6K42001208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1ee27b57116cc795e1ac545193313ad38caee792ff74cadd28446253994c1d. 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/ESA011567580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320cdcd0b9b80411c769a156406bae232aefa4e94fe7fe2fb9b4caa050c1eefb. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:44:40Z), 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/ESA011567581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8096bfb8bbe6e3c84003ddcdc968d37a4713dc1c7da793aa2f41d95ce00c32f. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/ESA011567583.
From the Lighthouse (A Distant Observer, Pt. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb703d9d1af69282cf382e28e552411b6e3d2a0e1933f749eb10403ebc8ead001. 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/ESA011567584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f7fa485af8c1baab2f80b0c73fde003efdc47fb6cf1d3c42140461bab22eef. 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/ESA092320945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bc164f5ca840820dc93e4ac25572098d0a566dbe71ad3c751601c82227bd93. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ESA092320947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5da16b07e8a9f0b5cdb0d67cbb35aa30ad1eb02f816eb918a5d8e744fc9f729. 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/ESA092320948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fe304a997c3c51dde87b9b58313ba146f386ed5efd07bb8fedc48f12af1f43. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ESA092320949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bffed7c8fb3a458292450e6c5f7d7b839564bd4288398e7bdbe4a0817a27ad. 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/ESA092320950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7888644907865395b18a437c4ca4fbc7fcc85e362233f7a32b178457d472489. 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/ESA092320955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309480e41a2159f44f67f6d2bd39baeaf56558066f0b102890964ebb4a292533. 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/NL8RL2443312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b578ffa67af2afaddeb8d2f3d396b943a53b8f317c741ec48d82ec978d5a431. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/NL8RL2443314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bfece7af8d7672ffc630ec8be4d99a61ad6c1e8302aaf772bdcdf4c719e8e3. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/NL8RL2443315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca5f2d9f352964ba58a99cee5900c98563bd4e9505e9dd2fd0cecab4b6b843c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/NL8RL2443316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5342f0d62cd66df5348707800b3dffb3557a688c68fe489ba47432baa4ea2be0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:15:28Z), 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/NL8RL2443317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecee9730a2b07a09bef0a4d4f4ad1ca58620460b42d72c8249a7fb93e831fa4f. 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/NL8RL2443318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e32869db4d9a78ad963ded4fd40cd9fb5998ad8ece8ad0df95721dd00cdceb8. 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/NL8RL2443319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660476e358297475f7d0f12189f238a234021a4c59e4a2a6f2f7a60b72c1a69f. 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/NL8RL2443320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070fafe3f46a762501600ac6617ed6e4b96be34d933546da51cf98d0b017cf90. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:26Z), 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/NL8RL2443321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba83aaef8836795d06293a4b31105bb9a7687a03218e437542fd54b4be0e1392. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:04:43Z), 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/NL8RL2443322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7368f5a6f794aaed0e8d6844dadcd5268683e99ed002561a82b9086b67f368. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NL8RL2443323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04bc62e9fe893801aa716253cda62c77dc22c195860d93f8ad9cfc08edace56. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/NL8RL2443324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97de60c64df8f3bf4df8e9ce64e46db962c18c5031b71926a8fc7556dc14b14f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/NL8RL2443325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735a4b82b22f2974c3c8e378e62c3fbf498d99fb10a8e0370f99d553d8640142. 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/NL8RL2443326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93767c60422e0b24adeb3d1277d66587b009ddd53e316992523c5689e92dad0f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:52Z), 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/NL8RL2443327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ba1a8f1be25cc0097067ccfcf65056f4305b7612a17ef626721b867705282. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/NL8RL2443328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578314aa1aececed0d3857c36db2d455d9833d0a3c3c8f60b56fb4c2b298af47. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/NL8RL2443329.