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 0x12a05d54665227dd9dacdc12cd69c3bd276d35f69b53faaa1dd39192fb56d6e8. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f134981-84fd-42c6-8886-9fac41d6b444.json and https://artists.proofprofile.net/proofs/artist/2f134981-84fd-42c6-8886-9fac41d6b444.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 0x3b2c00664de1500dbdafd42c5a82f9cd33caa2c89b3b44d44c87ea9ff99df8b1. 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/USPWN0810348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9ec723977ea82c7259665766d13c7f9a60eef601006c3b163f685747b0d3cf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USPWN0810752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d5cd71463be688e69c80bfd729659d2ce04351af61ae14f2d05ff9012950c8. 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/QMBZ92383231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084c4930f94278e331afbaad60e9c90ad65dd4ec5cfc98222f2ee8486944871d. 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/USPWN0810284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9daf6efec3c0764633dccd8936ace2d3bf4229f7fcbf0b115aa91fd69cdf9a4. 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/USPWN0810293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3103cd0c1eff1d57bf85e066fa1150cf2ba26132d9b59e2ef56397350011fdbf. 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/USPWN0810283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037a08cf8dfad27bc49c0ee693bc0bdd163579f8c5a9e53aafc3ec133027465f. 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/USPWN0810285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc30719b180964b7a672c3f7fb1f854eb7177a227063e52e326d061ddee721c. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/USPWN0810295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9469bde7e62283ada64f002d360bbf33afab885ea18ef11772189bf5799aedfc. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/USPWN0810282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f81c1173da1117ab034c2610681b7d306d9c289ec6cc640fe39f70bdfcac48d. 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/USPWN0810288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9469bde7e62283ada64f002d360bbf33afab885ea18ef11772189bf5799aedfc. 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/USPWN0810282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3103cd0c1eff1d57bf85e066fa1150cf2ba26132d9b59e2ef56397350011fdbf. 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/USPWN0810283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084c4930f94278e331afbaad60e9c90ad65dd4ec5cfc98222f2ee8486944871d. 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/USPWN0810284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037a08cf8dfad27bc49c0ee693bc0bdd163579f8c5a9e53aafc3ec133027465f. 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/USPWN0810285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9302aab92cb9b65496f232d398254651bc069ffd2e4d15686a607850f0de070d. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USPWN0810287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f81c1173da1117ab034c2610681b7d306d9c289ec6cc640fe39f70bdfcac48d. 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/USPWN0810288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957e85c783fcde1bec2ec6335a5febac2f89e660852880f82d093c3e8e24922c. 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/USPWN0810291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9daf6efec3c0764633dccd8936ace2d3bf4229f7fcbf0b115aa91fd69cdf9a4. 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/USPWN0810293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc30719b180964b7a672c3f7fb1f854eb7177a227063e52e326d061ddee721c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:24:50Z), 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/USPWN0810295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ed73b4be4044f836292b0b9f794afd1e8eb389da0cbd4e94e2323facc69144. 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/USPWN0810296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f497cf6b6a6f8d3d72f66e21cc8373dc55f3513b0248e894c26b7424cab974. 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/USPWN0810297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eff5540650bc138a8ea16b7ef5027115f26aaf425b4d27a25e4f78a2853173d. 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/QMFME2377404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bfdc6843722a3364e891998814331e72da5f0847b4ff97fcd74d934e6c6683. 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/QMFME2377405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74dae620c22bf3806509ebcaf3c54411b07763e3c55ac56de614f6f5441b287. 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/QMFME2377456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569a07dce40ca70ddfba866441acbf44fa941bd4e6283946a51519719b2c0e44. 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/QMFME2377471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b7f4790f9ccebea6ae41b70f5acfeafb2f5fc1b6823733d3590b2a8c7d8040. 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/QMFME2377472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f241014caa2308e69a3325755c732981200f3be0416fa8e390523ec1b03fcd5. 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/USPWN0810931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5707b62ed2b288094c9b7d549e61d94790006774215d19103dcd6cb1730b5e. 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/USPWN0810743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddf1392e128ee31ddebceffda2cdbf1e19b0fa24c6fbfa748798abc43a16faa. 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/QMDA71409050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709efff436569a0d8ff1f5273b1bccf4efe66ca473b9b9e159fef2dc5e7a32a6. 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/QMBZ92379803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5f5aec88c247845582b23be43e4bec2cc28e8fa88495dffb9d52c32b805909. 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/QMFME1496190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf681b46402b1dff69a789f2a4eb0362bbbf4df06430331bb757b72c899bd507b. 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/QMFME1496196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978938e1601458095da41bbf034bfdba949a83fcdac63c47483aef7383206450. 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/QMFME1496197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee44d1c73bacd9a95c886932bd2109186da3f99b59a107c6aef3e4fb7795592. 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/QMFME1496198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd07956a723238c53a65ac141922cab001060e94eebd8cca1b60c7ebe7699e7. 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/QMFME1496201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c5e909f3ce08f42c39751f9e14b26ca36fc62c4fd0cfd3dc1f4c50b102462a. 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/QMFME1496202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5cc10184f826778fd4d9f05504c239a381ddaf87e2a142784da0befacde411. 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/USPWN0911640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71f9fd3bf8c535fb6279243b246ada88a529d5b7a10333b7ebb0faebfd8c508. 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/USPWN0911649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8741927e8c4b6f7f0316bcba1d9237d14b2c5ee12923e35778ff06d3dc4e41ec. 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/USPWN1200718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709efff436569a0d8ff1f5273b1bccf4efe66ca473b9b9e159fef2dc5e7a32a6. 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/QMBZ92379803.