Mnemonic integrity
Check word count and BIP-39 checksum locally. The phrase never leaves your browser.
Uma bancada Web3 local para quem prefere verificar antes de confiar.
QUANDO CONTROLE VIRA CONFIANÇA
Sistemas complexos não precisam ser obscuros. chaintool transforma a mecânica Web3 em ferramentas que você pode inspecionar e usar sem abrir mão do controle.
KEY FORGE
Use para testes, aprendizado e carteiras novas. Para fundos importantes, crie chaves em uma carteira de hardware ou dispositivo isolado.
Network recipe
m/44'/60'/0'/0/021 EVM chains · secp256k1Output
Cryptographic engine ready
Output materializes here
Web Crypto entropy · no request · no storageFast local checks designed to become habits, not dashboard clutter.
Check word count and BIP-39 checksum locally. The phrase never leaves your browser.
Translate human amounts into exact onchain base units before you build a transaction.
WHAT COMES NEXT
Live gas and recent block pressure with a simple send-now or wait signal.
Read an exact ERC-20 allowance and build zero-allowance revoke calldata.
Turn common calldata into a plain-language intent and risk report.
Curated testnet faucets, public RPCs, explorers and chain IDs.
Local crypto utilities, RPC probes, contract inspection and deployment helpers.