Chat Chat is the debut studio album by Japanese musician Takako Minekawa, released on June 25, 1995, by Polystar. Track listing Personnel Credits are adapted from the album's liner notes. Musicians
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 0xe10e88aea50895b759df8af037725eb3fff1036e9d9726143bf286a4bb64b92d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa87053c-a7ad-44dc-8861-06d9c2e83377.json and https://artists.proofprofile.net/proofs/artist/fa87053c-a7ad-44dc-8861-06d9c2e83377.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).