Sign a one-time challenge to prove control of the EOA configured in config.json.
No on-chain transaction is sent; the private key never leaves your browser.
Accepted wallets (any one)
…
or
🔑 Sign with private key (in-browser only)
Paste the private key for the expected wallet. Signing happens entirely in your browser;
the key is never sent over the network.
Only use this on a local machine you trust. Treat the key as if it were typed at a terminal —
anything malicious running in your browser session can see it.