Akai (, ) was a Japanese electronics manufacturer, established as Akai Electric Company Ltd in Tokyo in 1929. It was best known outside Japan for its tape recorders during the 1960s and 1970s. The com
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 0xf2214e675890dfbe0cc78858b339c65c6e17ccec1832e92db9833577ba78b078. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a4fc184-5d36-4118-b253-8eaf290844ba.json and https://artists.proofprofile.net/proofs/artist/4a4fc184-5d36-4118-b253-8eaf290844ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).