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 0x22ecb8da3403bd95cfcf0f587bf17e2f8de6e22562124a9318b8084e5b35c946. 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/b1323931-6aec-4c2a-a3e8-950a2675193c.json and https://artists.proofprofile.net/proofs/artist/b1323931-6aec-4c2a-a3e8-950a2675193c.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 0xdec4c950519e08b65d965ea73bdf121a11bc21b54d068b2a759dacc7480db389. 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/PLX492300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec18f1759f805f76deb2603e8e8c06c8396ffef67796f8351e0efe875ab7af. 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/PLC062231129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb160cf125a06d66f65eec3ad8968b5e4503a4fc9b9f780488169a64265b61e00. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC062229721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a92e78d7931a6d4b9481b4447981047b5702db98dafb3816d6b0371f252695. 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/PLC062227875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7282b656e9f259ceb7b50fce084ecb9c51aa104a399cfbab1a9c5bf86e225d79. 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/PLC062231131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf063d4aa7a1572024fcb651315c62d9c81f7fb9f766d6d7065784ac1408a96cb. 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/PLC062231133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5844423e8414d1ac244ba002d691d85ffd2f3ee1ed9feeed550d7ce20f32e7f8. 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/PLC062231134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9ff36efd10b247ac9b141611d7cff5083c321d1ada103eaf0c019cf6c2a03b. 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/PLC062231138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3107fb5ca0482efff6e832f159491a331c05de38cd6a7353ca37cd5884edf7. 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/PLC062231139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e929bf64df5c9781429edf48f395c2f359d872e2a4510bdfde1fe0425844fff. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/PLC062230825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44239555c38c2bf2ffd0d04cd6f804982aecd18c44f3f8cbfac854475566ade0. 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/PLX492000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c25e237e657e0cc7fd6e9782f8de7041bddf7d4ccc8f801b6a745b13a3467d. 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/PLX492200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8758915c1b873dcc63b1dab4414e066f019341c1c2899e776b40eb329021fbe8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLX492200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5160984b59bffcee6fe4575e25a57f9f7a36b072ecae92f3db64fe77f73208a2. 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/PLX492200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a9166e30980d8307feb6546bd532a6e190952b481fcfbe537e9fa49ac6681b. 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/PLX492200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9012684acf1da16c3c505cadaf5ae5694f7f336e091b5a018ccfa95e5beeb130. 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/PLX492200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f57582155ccaeb495c3824440e5b0cdf8d04adc97b175cf3dc6c615b018503. 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/PLX491720244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594f179738caa6f447ce4d9c40c4df09b0d3d2cc6ca4d397363acb60498a7261. 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/PLC071410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2b8ab709c178bd2395fe5de0cfe447ea845ea1aaa343ccc0054080e49f3f63. 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/PLC071410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdac20692ee5195581c39fdbe283f2f2c8388ec50fdf56d21aa0d16c2c1d7a9f. 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/PL5H42500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023ecf296f75ade04cc0b009dbe27ed491a23224dba02bc4aa880d3fef24aea9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PLX492500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0007045c3e3a1931c6568687a7fdb1656d73dd4ca19e627bb9f767221583c15. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLA552401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adaabc82a0fa229ddcacb6cac38d4c2fd42f65393f4a143bd1cca58538f7cbc. 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/PLC062416293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7edac55c3f19437a6c4c9c215de51e4ad477ec22c39d6642be1e529cfdcda41. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PLX492400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef32bb3d5e188bd68ec89b7890c9a5fd89edce3958fe1b24efd0a5dfd0087cda. 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/PLI862300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aadb4a401449156a6631f00944a5f76b884d2f44467424d007416f204fa1998. 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/PLX492300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c25e237e657e0cc7fd6e9782f8de7041bddf7d4ccc8f801b6a745b13a3467d. 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/PLX492200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec18f1759f805f76deb2603e8e8c06c8396ffef67796f8351e0efe875ab7af. 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/PLC062231129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e929bf64df5c9781429edf48f395c2f359d872e2a4510bdfde1fe0425844fff. 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/PLC062230825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb160cf125a06d66f65eec3ad8968b5e4503a4fc9b9f780488169a64265b61e00. 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/PLC062229721.