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 0x5907c546d1f8c20d859ba0fa82e26665b0c27ebb65c1f3e83f527d88b4d11049. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff9d5f48-ee63-40d3-9cc6-dad800339893.json and https://artists.proofprofile.net/proofs/artist/ff9d5f48-ee63-40d3-9cc6-dad800339893.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 0x0196c72bc89f503e9f25ec6839f1ceba6b95eb185397464a6e216e30b429c009. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UK6821902752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645cca9d5ebf623b8c1c11e20ac96360c9b78bf61393988120a1cfb4bcf02b33. 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/UK6821902753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64adf82f7d6f3d3ac90741f856f90fa1699dff02cce0fbcf1b1baf17fcd6acf8. 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/UK6822404406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a730c1dbaf54991b9a898b2554fcb9b6e9a0f26b6a58b1e3d9c5f073e52207. 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/UK6822326811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc513ad75730b6df39e23d3732684870a8b1fd9a6ba3035e553fc5ecb3988d75a. 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/UK6822404412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4379f943318bfeac7076aa5116e33f7526f124053ac31eafa98e35a61769bdca. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UK6822404413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1091d92b8d3617591d7752418eafacc093953b8055d0ed87cc28b7144418f0. 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/UK6822404415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab80457d12afb6bc6a38282102eb28ec8ca98272eda83e9eb4c7d16af935471. 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/UK6822404416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d7a8145d59176b612078f4a63f036a923ad8c2fe9baa749d86bf2e75054f10. 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/UK6822404407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166932699b645564bd3f608da2052c34e2060010d431f22eb6a40b114687b435. 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/UK6821902740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbc3cc1795d44c96805d019d0e1e85521b0f82be3bf9f53bf2dcf8b2e2e6462. 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/UK6821902745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa369a36bcca8b074b449db458b1d941f34ceb85155d7740385725cda466ac99f. 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/UK6821902746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42564f2899e52decc4a8a955c32d96714b9c1f293d41e843ffc9e8ce763f4496. 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/UK6821902727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf481ecad78644a61d3784d8e71ff3195e4b53c8bf4983b35de9a2f4d8915d880. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UK6821902724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410a1621be8494a3c9958079238490889a677ce5264a3147ce1c2a8dc9180541. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UK6821902725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc758e0d262be3e294266b58c7329c707656832a2a22ff3b3d1b7136e5418053. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UK6821902729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bae049b93c8dc8088a1db6309615e6cee1fb3dd0d5fae2c8525e04df32cb26. 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/UK6821902730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5922584da9deb864bcc758a875d635e0398959409e8b3281d46272172bdda43. 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/UK6821902726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3d7526237fb09abcdece628a683cf89b720bd0c1a48adc74e8abba0c316c51. 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/LTE111900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cb6b752a2ceaf8fcdbf70ce3054903cd0caa9cd588bf04ae62209ec971e1b1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LTE111900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf542cc546679637e35e8f5207285529436422c5f57b1fd86e4be31ccd20b79c5. 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/LTE111900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9002069d52893f814d8b63b913ec1698d54704ea76d9f93934be1ca8b54aa2b7. 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/LTE111900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64adf82f7d6f3d3ac90741f856f90fa1699dff02cce0fbcf1b1baf17fcd6acf8. 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/UK6822404406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5922584da9deb864bcc758a875d635e0398959409e8b3281d46272172bdda43. 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/UK6821902726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6567faf5290f2c2925aaec220c9cf3e0abd425cfde65148dadc05567ade7d9a9. 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/UK6821902719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a51b354d50b63622365af74dd5471784c4d402f72dcc362c533bd17fa2466c. 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/LTD981900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32fce78d711569b6f1663a8d03988c82ea2e06b8efd878e2ed985d0df6fea39. 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/LTD981900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04737fd7eba69068dc1dbf5eb7d022f395ca7b33f8494f48c6790ab8b675597. 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/LTD981900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3fe6a33e808d39a83c34c3dc00c43a43e404fce107803829e7b6ce69af151f. 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/LTB081900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8657827b90114e11d8ed684a5aea1143ea70cc1d70c1781ccb362ecea3390f1f. 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/LTC342100007.