Sign in or sign up with a crypto wallet
You can use a crypto wallet instead of an email and password. The first time you sign in with a new wallet, BYNAI creates an account for it; after that the same wallet signs you in to the same account. Signing only proves you own the wallet. The window says "Signature only — no gas fee", so it does not send a transaction and costs nothing.
Web3 sign-in currently supports EVM chains only. If you pick Solana the window says: "Web3 sign-in currently supports EVM chains only. Solana support coming soon."
Where to find it
- Top bar: Connect Wallet (opens the sign-in window; the title is "Sign In" with "Use a wallet or your account to continue"), or Register Now / Log In.
- On the Sign In and Create Account pages: the Connect Wallet button below "Or continue with".
- Inside the window, the wallet section is Continue with wallet with two steps: Step 1 "Select chain" and Step 2 "Select wallet".
Step by step
- Open the sign-in window and look at Continue with wallet.
- In Select chain choose the network your wallet will use. Available chains are Ethereum, BNB Chain, Polygon, Arbitrum and Base (the exact list shown comes from BYNAI). Your last choice is remembered on this browser. If no chain is picked yet you see "Select a chain first to see supported wallets".
- Under Select wallet choose a wallet:
- Wallets installed in your browser are labelled Browser Extension.
- WalletConnect is labelled Mobile / QR and connects a phone wallet.
- Approve the connection in your wallet ("Connecting..."; then "Wallet connected").
- Approve the signature request ("Sign to continue" / "Signing..."). A signed request shows "Signature verified. Completing sign-in..." and the window closes.
- If the account needs extra verification you will then see the Security Verification screen (see the verification article).
If you opened a referral/invite link before signing up, the code is attached automatically when a new wallet account is created (see the referral code article).
Messages you may see
| Message | What it means / what to do |
|---|---|
| Select a chain first to see supported wallets | Pick a chain in Step 1 |
| Select a chain first | Same: choose a chain before connecting |
| No wallet extension detected for this chain | No browser wallet found. Install a wallet extension, refresh the page, or use WalletConnect |
| Mobile wallet connection is unavailable right now. Try a browser wallet or sign in with email instead. | WalletConnect is not available; use an extension wallet or email |
| This chain is not supported for Web3 sign-in yet | The selected chain is not accepted; choose another |
| Wallet request was rejected | You (or the wallet) declined. Click the wallet again and approve |
| Wallet not found in this browser | The wallet is not available in this browser |
| No wallet account returned | The wallet gave no account; unlock it and try again |
| Connect a wallet first | You tried to sign before connecting |
| Failed to sign authentication message | The signature failed or was cancelled; try again |
| This wallet is not supported for the selected chain / This wallet type is not supported yet | Try a different wallet |
| Wallet is on a different chain than selected | Switch the wallet's network (see below) |
| Chain mismatch between challenge and wallet | The wallet changed network during sign-in; try again |
| Challenge expired. Try again. | You took too long to sign; start again |
| Invalid wallet signature | The signature was not accepted; try again |
| Invalid request | The request was rejected; try again |
| Session expired. Reconnect your wallet. | Connect and sign again |
| Wallet account changed during signing. Try again. | You switched account in the wallet mid-way; restart |
| Something went wrong. Try again. | Unknown wallet error; retry, then contact Support |
Wallet errors appear as a red pop-up whose title is "Something went wrong. Try again." and whose text is the message above.
Wrong network
If your wallet is on a different network than the chain you selected, a yellow banner says "Wrong network detected. Switch to the selected chain to continue." Click Switch Network and approve in your wallet.
Switching wallet, account or chain
- Switching account in your wallet: BYNAI signs the old account out and asks you to sign in again with the new address. You must approve a new signature.
- Changing the chain in the BYNAI window while a wallet is connected disconnects it so you can reconnect on the new chain.
- Disconnecting or locking the wallet (or removing all accounts) also signs you out of BYNAI. This is intended so the page never shows a signed-in account without a connected wallet.
- To leave on purpose, sign out from the user menu (Sign Out). Signing out also clears the wallet connection in the browser.
- If your wallet is connected but you are not signed in yet, the top-bar button changes to "Continue as {wallet}" (your wallet name or address). Click it to finish signing in. The top bar also has a chain selector for choosing the network before you connect.
Wallet accounts and email
Your Account page notes: "This account signs in with a Web3 wallet. Linked email/phone are for verification and notifications only." You cannot use that email and a password to sign in. Use the same wallet and the same address each time; a different address is a different account.
FAQ
Does connecting cost gas? No. It is a signature only.
I lost access to my wallet. BYNAI cannot recover a wallet. Contact Support with your UID and what you remember about the account. Never share your seed phrase or private key with anyone.
My wallet does not show in the list. Make sure the extension is unlocked, refresh the page, and pick the right chain.
Can I use Solana or Phantom? Not yet for sign-in.
When to contact Support
Include your UID or wallet address (the public address only), the chain selected, wallet name and browser, the exact message, the time, and a screenshot. Never share a seed phrase or private key.
Related terms: wallet, connect wallet, metamask, walletconnect, web3 login, sign in with wallet, sign message, signature rejected, wrong network, switch network, disconnect wallet, wallet not detected, rabby, trust wallet, evm, signature request, no gas fee, wallet logout, solana, phantom, wallet address
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