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 0x8bb2092bf4c92b441b700442145d0b74f1f65b289b711c2f024a911cc0897215. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4755ad68-f67b-4183-9f45-73df0632d7e3.json and https://artists.proofprofile.net/proofs/artist/4755ad68-f67b-4183-9f45-73df0632d7e3.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 0x6ff659e55ae56bf34101e87db961eadb2584a156dcacebd38c1d1fdecc0cb5c1. 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/QZMEN2478720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4887dfb5ebb18629c85064030fa2ea8eaaece56b1bef0d7bf4e7c701b2845779. 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/QM6N22405261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae64d61e2d3a89c37445b73587a72bc4dc5c945b31a5abc5d48057cfffe146a. 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/QM6N22405280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b18e3275bbc2a70656c53687172a45561803a11431591b5889bfcee62ff96f. 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/QZK6N2434441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51003cb8f11308361d6498987d8fad85a7f9fa7f3fb85575e632a7c060d2b27. 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/QM6N22405277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a0f11c75421b0bf7003099c9dcc3f0e517a3d5f1be94048363ea92e4e35877. 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/QZDA72414322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cba568521d79d7a43b262c0553c4a63aca80f22953c0ecf9ca1f0ad2a147681. 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/QM6N22405294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062fdae829d6bc213167b0dab1fa1114f5f676df8b46eb6a62b945e310fbf6eb. 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/QM6N22405337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6357c2b57002d04f1f4620ac5c58f10ae11035b8b3e5b9fb2767132f5530abf5. 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/QZHN42437984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21fdbc1143677f358edf7aaa836451d776fa68cbfc31aefb14674508eb94517. 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/QM7282440723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ca1fc03a1d0f672aec8e95f7f741201969f31aef57b93f9bc7affa45a4066b. 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/QM7282409489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd64929e93eac962dd63f9cac1697f6f0299b56a33e0733cf6e1d6cd4c32c2af. 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/QM6P42445053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a5b83aecd829913627b11963b859fb13e1c2299243fc80c40d46efd88788a4. 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/QM6N22444408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a0f11c75421b0bf7003099c9dcc3f0e517a3d5f1be94048363ea92e4e35877. 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/QZDA72414322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb572865f464749fe27c7262fd3f010499df4247e64a153b2406549e951ef29. 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/QZFZ72453512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9824cdbc0e6d183cef53dc18490ce4deecc8029644cda528ef5a1177cf5069. 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/QZWFL2383066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473d237ce2072a752fcd9aa895482fd26efe479df942cc48835ef74101306c9b. 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/QZTBB2337603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bd95cf6551bd7aaec9a998ef31673650b32a13b1ee32e7daa6a005b6a7516b. 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/QMFME2367324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103b3d2d1788e217fc472814592b630f2507c32e6f1c51f56af17d1402329fe9. 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/QZTB32349261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4801a27497885d0e88dbc020ddbc7ca10f6d2b3e10ba0cf7c9775deeac90406b. 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/QZNWZ2309430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bda17c45dcea903c52c31fc77edf1f8e28350b76a000411bfcb34e539884bf. 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/QZNWV2375731.