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 0x5386dafb53bda13421a6b896391895202ee7b717ee9fcd9c768820f3c765affb. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/783c886a-fe76-41ef-b8f5-f47a3f593c86.json and https://artists.proofprofile.net/proofs/artist/783c886a-fe76-41ef-b8f5-f47a3f593c86.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 0xf016d2a19b33848b629856f672f3c8aec036d99062aebb71ce5a9d2b0dc9259a. 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/QZFZ22391267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32121e38ab9b9fb59b73020bc2438bc72e56464bbe95cd2b1436eddcb1db3335. 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/QZFZ22391268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3301924471587b2a4a0876b48d2cc81534f1a1bb20a147245500127ff331af5b. 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/QZFZ22391269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ce6ddd956822b457ff9c7c861a1044ba1a4bbd1964c3c3881a144d1825eb26. 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/QZFZ22391270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a12dee5d7f67ae4fb1fc071b892485dc9d815d8b0316960133c805ff6eff9e0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZFZ22391271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e5f87ad02c1b3a5f724f53ce08e8166f467f71c1162b4572f500deaa9102ec. 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/QZFZ22391272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956a47983463e485ec51586a9f29913f6ae9622e40f9f0dfa0e281151ea737a0. 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/QZFZ22391273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fe910131e0e2fe341407f5eeb982e05f1456da803ce811b57ffc15080ee279. 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/DGA062404375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca12cd4df8a80b6d72a4ff5f53b269a2aec46bc118803f182d1541fc2d4331a0. 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/DGA062404376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a238eb52f7f045fe2f3c7a5493f3df0daae40824c41009721419a61ee96af9. 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/DGA062404377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4232488b9875fc267cfcb5eaecb59e324d626a26f3973d2a9a9692f7cd4e41. 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/DGA062404378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae87395127ad8a02bc08efeb374636e35144b7b5cee035d4b1b01f9cf3454daf. 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/DGA062404379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deb0cc9e48b94d970e3be194cb44a174f7994523fb8a4d492598d7980a0f4b2. 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/DGA062404380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575190abbb7320ae89cc05a185720722122953ea38661e6ff24f5327fcd1d2c8. 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/DGA062404381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1a118a26827ec66750feb2c9ffa8ba21845c1b024e2dcbc8ffd911baa0cf56. 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/DGA062404382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a8cd5622aa3d22792bedb6d1fb9067a6c76c12d09ee2aa1d26f8c4a024bc34. 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/DGA062404383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fec75f0c60c546074cf98837cfa00cf7d10e63c54735a7a129a3376c883f5df. 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/DGA062404384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828faa326d34a61294b7d8e5ef2b34f24260475c7b09bf26066dc6cc30a9287c. 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/QZS662108044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fe910131e0e2fe341407f5eeb982e05f1456da803ce811b57ffc15080ee279. 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/DGA062404375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca12cd4df8a80b6d72a4ff5f53b269a2aec46bc118803f182d1541fc2d4331a0. 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/DGA062404376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a238eb52f7f045fe2f3c7a5493f3df0daae40824c41009721419a61ee96af9. 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/DGA062404377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4232488b9875fc267cfcb5eaecb59e324d626a26f3973d2a9a9692f7cd4e41. 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/DGA062404378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae87395127ad8a02bc08efeb374636e35144b7b5cee035d4b1b01f9cf3454daf. 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/DGA062404379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deb0cc9e48b94d970e3be194cb44a174f7994523fb8a4d492598d7980a0f4b2. 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/DGA062404380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575190abbb7320ae89cc05a185720722122953ea38661e6ff24f5327fcd1d2c8. 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/DGA062404381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1a118a26827ec66750feb2c9ffa8ba21845c1b024e2dcbc8ffd911baa0cf56. 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/DGA062404382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a8cd5622aa3d22792bedb6d1fb9067a6c76c12d09ee2aa1d26f8c4a024bc34. 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/DGA062404383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fec75f0c60c546074cf98837cfa00cf7d10e63c54735a7a129a3376c883f5df. 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/DGA062404384.