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 0xe9a42dfbecf10def39c58e3d14077940a89c1c210bd1d3aa5c7be648f02292f2. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f788d69-73ac-4ab9-9070-6a244c1b260a.json and https://artists.proofprofile.net/proofs/artist/0f788d69-73ac-4ab9-9070-6a244c1b260a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yumeo Kanaete Doraemon - From anime "Doraemon" - Mao - Cover
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 0x88923d9c96a202ad737c22d6c281ca305ce9a0ffc66a649f55e39bbd321bc8e2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPN821005225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb255561b6622a14555407dcd52f21213f77e97f55abe315df595bcea3f99f353. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/JPN821005093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88923d9c96a202ad737c22d6c281ca305ce9a0ffc66a649f55e39bbd321bc8e2. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:48:37Z), 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/JPN821005225.
Airii Yami vs MANDY B.BLUE #1 -Haneda International Anime Music Festival Presents-
Airii Yami vs MANDY B.BLUE #1 ～HANEDA INTERNATIONAL ANIME MUSIC FESTIVAL Presents～
Airii Yami #13 -Haneda International Music Festival Presents-
Airii Yami #14 ～HANEDA INTERNATIONAL MUSIC FESTIVAL Presents～
Airii Yami #14 -Haneda International Music Festival Presents-
Airii Yami #15 ～HANEDA INTERNATIONAL MUSIC FESTIVAL Presents～
Airii Yami #15 -Haneda International Music Festival Presents-
Airii Yami #16 -Haneda International Music Festival Presents-
Airii Yami #16 ～HANEDA INTERNATIONAL MUSIC FESTIVAL Presents～
女子かしまし物語 (モーニング娘。'17 Ver.) - Cover - モーニング娘。'17
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee441a10b2aa8612c08fef369e20055e7ec68562d998b0f64ffec5b3fe3edd79. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPN821009755.