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 0x5c4126cb12c7b630d6aa70c24166bba2adbeec9fc5b2fd6b08e0b3767954194e. 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/609f95b7-a745-4de5-b775-5d55031d764e.json and https://artists.proofprofile.net/proofs/artist/609f95b7-a745-4de5-b775-5d55031d764e.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 0x806baf05c70457745b67101c61792b46b81df999c56bb96bcd0bf9eb4e7b3bdf. 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/BRVR10600345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424b9f01c31dc0f4ef884670f3666418e6887e1fa32a716c9af6ff1554e16a80. 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/BRVR10600346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eb699317cc7cc5a7122b4596f15c9d508bd136e387676bee1f6cabfc93bc1b. 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/BRVR10600347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4b0f894e422391a03e556208d9568b30566cab5690fa1d35f094a2ffeeaeea. 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/BRVR10600348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e85149e2c20f4e21e6e21ef61204cf837ad8fe41ba32253a852d65d14446c70. 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/BRVR10600349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c9a9211cb9f7f98c4e1682d29743ad1d0ed753ef892c8e2009b457f3ee23c3. 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/BRVR10600350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b042e978e495164206c37d5895a316825af69fdb47ef028a27fbca8c3b5041. 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/BRVR10600351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4b189db16672bf813d9c4f3f7a33d11f591e7b033f924ff7a6b95269700f0f. 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/BRVR10600353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363546ce9c0efbaff1baa3a7ee061c97d0dbd1744aa69a8f4ce9025f1b9d29de. 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/BRVR10600354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d3423af6d278f047e5ac3e83c758d883945ebdaabb67cf5a1b4000e8f02f0b. 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/BRVR10600356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1519324b5edd14bdef5cdf4ae173c942063085359e50d7a6a401ac9d1d45ab6c. 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/BRVR10600357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aef81ad9be1c3a268450e7f7640f6e9e06c24592084486392c72e3d8293d54d. 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/BRVR10600358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806baf05c70457745b67101c61792b46b81df999c56bb96bcd0bf9eb4e7b3bdf. 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/BRVR10600345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424b9f01c31dc0f4ef884670f3666418e6887e1fa32a716c9af6ff1554e16a80. 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/BRVR10600346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eb699317cc7cc5a7122b4596f15c9d508bd136e387676bee1f6cabfc93bc1b. 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/BRVR10600347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4b0f894e422391a03e556208d9568b30566cab5690fa1d35f094a2ffeeaeea. 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/BRVR10600348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e85149e2c20f4e21e6e21ef61204cf837ad8fe41ba32253a852d65d14446c70. 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/BRVR10600349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c9a9211cb9f7f98c4e1682d29743ad1d0ed753ef892c8e2009b457f3ee23c3. 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/BRVR10600350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b042e978e495164206c37d5895a316825af69fdb47ef028a27fbca8c3b5041. 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/BRVR10600351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4b189db16672bf813d9c4f3f7a33d11f591e7b033f924ff7a6b95269700f0f. 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/BRVR10600353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363546ce9c0efbaff1baa3a7ee061c97d0dbd1744aa69a8f4ce9025f1b9d29de. 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/BRVR10600354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d3423af6d278f047e5ac3e83c758d883945ebdaabb67cf5a1b4000e8f02f0b. 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/BRVR10600356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1519324b5edd14bdef5cdf4ae173c942063085359e50d7a6a401ac9d1d45ab6c. 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/BRVR10600357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aef81ad9be1c3a268450e7f7640f6e9e06c24592084486392c72e3d8293d54d. 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/BRVR10600358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eb699317cc7cc5a7122b4596f15c9d508bd136e387676bee1f6cabfc93bc1b. 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/BRVR10600347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b206266fe06027416fed980e23c87f94d985a303551d4aa36d6112205bc4c7. 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/BRVR10700643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd642057573fa9ae78f7965b7496698becbfb6cb067609e7d9fcb18eabc330a8c. 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/BRVR10800422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57feb36bdbf18c9277471b1fb89f9ee1ec6234e085c1b26e4b6d3b0f556ce93b. 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/BRVR10800713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff2be3cf7d4499bccb8af68e4bb1afd8de9fe1fba63e32344f09e805a0ec8d0. 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/BRVR10600891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaca97cc38ef529061f636537146dabd4d3119fe466bc3bcf3ef5b6a6067f9b8. 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/BRVR10600747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eae2bce634f7a912945d20f604d084fcaffbb2004ef0facb2634dae92ef518a. 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/BRVR10700339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a24153c2fa364f2a287c4f21e80c9a30e37afbd2c825395fdbff1b50a4768b0. 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/BRVR10700770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d3721256983d1f594752dfb3ab6043ad8c36fd5db22d0efbea4cd406814142. 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/BRVR10900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41750b55fbeb42f80be9dac33828570c4088dd3dcb42b0b6c635c4ee34911bf. 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/BRVR10900461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd7b1917fce9b268857a13ea2d460d937cd78cec63e0318114317b9ecbeca30. 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/BRVR10900678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c564758751d6fb609bb9b732d47f3a0baf9634374dbaeda16db0420369e8f6. 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/BRVR10600662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51990e52c21920d7bba0ab5dd9dbb26b63bfab12cc3ca0f02597bc2d32bf82a6. 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/BRVR10800548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95514d626e83490f9f65d6299ca39953862d86ee1073870d087fcb567f7aaa56. 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/BRVR10700551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51990e52c21920d7bba0ab5dd9dbb26b63bfab12cc3ca0f02597bc2d32bf82a6. 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/BRVR10800548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788b5316b8c57a0bcf5edf90bc7f9cf92e8814acaaadb4859a5592ae29956e63. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/BRVR10500728.