MEI may refer to: Education MEI Academy, an international school Mathematics in Education and Industry, an examination board affiliated with the OCR examination board Mennonite Educational Institu
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c1ba95b9aa357e5c4b5fd862df2439bf86db4d1247d3d884d22319f285353c. 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/e59ed963-62ba-4e3f-816b-e2ae5a857986.json and https://artists.proofprofile.net/proofs/artist/e59ed963-62ba-4e3f-816b-e2ae5a857986.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hana ni Natte (from "Kusuriya no Hitorigoto") - City Pop Version
Absolute zero (from "WIND BREAKER") - City Pop Version
A Cruel Angel's Thesis "Neon Genesis Evangelion" - Eurobeat Version
Ambivalent (from "Kusuriya no Hitorigoto") - City Pop Version
Zoltraak (from " Frieren: Beyond Journey's End") - Epic Version
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecc02e20c729b1dc3ed0a0b3198f076f59c7c35bf9f7d125bbcd3c0539bd736. 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/QZPJ32337172.
Kamado Nezuko no Uta (from "Demon Slayer")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201f9fedff016cb4a57a7470e483c1c3d1c7af0cedf9bda7fb4c8ab79bb29659. 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/QZPJ32276095.