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 0x4119d7317ecf794807749514e98c26226fac4b7d450a55c3f07678d4211fa13d. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f49fd99-5dd1-479c-8410-e40141889ff3.json and https://artists.proofprofile.net/proofs/artist/3f49fd99-5dd1-479c-8410-e40141889ff3.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 0x7ec8239fee20282c4b286901b43a57df6ac246c370a2f381a3cfb52a83a2cd36. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR10S1900449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b452a3badabf6bce9c1623089d2ab2d72d2d31299a353db8bdbd4a5d169fcb3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FR10S1900450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57751d8bb86db2d9719aa582fd0444f8dcc5099fdfd65b4efe2f1a74d3bb4f0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR10S1900451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797cfd16c17ee376f9e28d683fc45726d3016c687053032b3ce48ac6b8b126dd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR10S1900452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8ae22687c28eb06be9c621ecf91c4a63f336f1b6169cf1070a0953b8197e79. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FR10S1900453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158e670d330de5f912bda8c630ee11baeb7d3024404ea080ae05d6d76f0f9ac3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S1900454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2222efa3598334d78489c841571e00772430c71ca397ad8943e9f40857d1df8c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:33:30Z), 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/FR10S1900455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba748ac8eabbfbcc975c4abf1aa237aa6adb81f392f51648c7d6de900c677a2. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:33Z), 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/FR10S1900456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fc206d71cd004c3c5a33303489de7fd1e8b67526f78d26e68a21c4589988f8. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FRX201852169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0100a3b7b92d4f9a1346daf7db3c64b13ee27c76bbae622d24b8dbc4dde10e78. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/FR10S1900458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb3a50fd01620f07249875a26ec6800047e8a8683b23a5dbc915049da16da22. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR10S1900459.