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 0xa6631d586be6ddc1b12317c9934e9a5345c0c9361da0c8e831da399aa16a9956. 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/13c66ada-2e79-462c-8de7-039bbddcdfe7.json and https://artists.proofprofile.net/proofs/artist/13c66ada-2e79-462c-8de7-039bbddcdfe7.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 0xf7027c89602a07af578065fe6d5349a930bf3e2fe892f45e3a21ea813f665732. 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/GBKQU2210607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1febcd9891f1434a60c1ded7a92b4f73240b5b24a5ed4e43e81b4b6aa6cb7bd. 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/QMB622301603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6381caa3ca446e77554891ebd61da437b6c774038867e2edaac6607ca70db9. 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/QMB622301604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc392d03d184fb77a415b4d3c15cc09093f3958e35b94f11b35798b598c9fc0ef. 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/QMB622301605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034572de01ab71dd8b994ec701a09bdd60e3a9a12e2317dcdd4271ed9116fb21. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2244295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c4421670e1e66530d6ddbe2f4ffaa90096f8a39ee03045632989888cdebad8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QMB622301607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d02109f4942ebaa6d70256dfeee5b7b35b72c79afe3e2c8b66400338d934b3c. 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/QMB622301610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb41860b11117ae5eb4aeeff23e48d4e296106cec13b3356aa2e7c31bee7d962. 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/QZNWR2473513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d78fe35943e79f05eff7e386619296e27f35236056db66726bb386d1b88b9c. 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/QZFZ42425187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828513c2b6ce134585d8751d86bc9bf27b4265879ed694c4d890e13ec6de65b5. 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/QZTB22311149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d02109f4942ebaa6d70256dfeee5b7b35b72c79afe3e2c8b66400338d934b3c. 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/QMB622301610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1febcd9891f1434a60c1ded7a92b4f73240b5b24a5ed4e43e81b4b6aa6cb7bd. 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/QMB622301603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c16883a133bc0c117da3074cdfa4280f3ed6330b3a04c128c4c26ae7e950f7. 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/QMB622301501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521950cf8ea5599bbc160cf1bcf4781375cea0916146e6fd4ab826280b8e7777. 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/QZFYY2324114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034572de01ab71dd8b994ec701a09bdd60e3a9a12e2317dcdd4271ed9116fb21. 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/GBKQU2244295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d114666cbb0de81f27d3b8d43b1d6267f903fda8766b0111e1ff1bae074e3c. 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/GBKQU2259596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7027c89602a07af578065fe6d5349a930bf3e2fe892f45e3a21ea813f665732. 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/GBKQU2210607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71ced15142f0e37484ddc671a519a921836be27b52652c105191f0b0cd88b51. 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/QZK6J2159175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a00154432dd43e7f1848901dd08b06e9766db38c7edffedb5bd3310b7bf97c. 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/GBKQU2198208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfaa7f07377373af89b7e008189f9783a2cf14df77bf38d50b4a948882b4d6d. 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/GBLV62109397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8604484fad31e6d0fb2398a5ff93627cde82afeea212e767e612194c29927b1. 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/GBLV62120767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfaa7f07377373af89b7e008189f9783a2cf14df77bf38d50b4a948882b4d6d. 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/GBLV62109397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a00154432dd43e7f1848901dd08b06e9766db38c7edffedb5bd3310b7bf97c. 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/GBKQU2198208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71ced15142f0e37484ddc671a519a921836be27b52652c105191f0b0cd88b51. 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/QZK6J2159175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043724f662d32da5329598b6dc230a18016084fa36beda40192c72ccb9d10ee1. 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/QZHNC2114742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d250a8e5bb8ebf1900a04f5e1fdaf4fc13ee705d72cb7fab5c3162252da183. 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/QZFZ32184444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237a41a1108d21e8c7196d350875531de88a523c0f4cfca288add9da03211560. 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/QZK6K2031510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d67ac197685ce6d83b90b745032e7e1bcbd3014512f4d35f63608e22678e21. 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/QZHN72039612.