Eight free browser-local crypto tools
  • ChainKit — Address formats and exact token units
  • CallLens — Common static EVM call layouts
  • PayoutCheck — USDT Ethereum payout CSV review
  • PayNote — USDT Ethereum payment requests and QR codes
  • GasBench — Ethereum gas fees and ETH budget scenarios
  • FieldLens — Exact JSON inspection and semantic comparison
  • DigestBench — Local file, text and Ethereum checksum verification
  • EpochBench — Exact timestamps and batch date conversion
No wallet connection. Results have limits; review each tool’s explanation.

Explore the First Fold toolkit