Wallet sign-up

Signing up

You sign up with any EVM wallet. No email or name is required: your wallet address is your account.

1. Connect your wallet on the Hardfloor site.
2. Your wallet shows a sign-in message. Check it against the list below.
3. Sign it. That creates your account and gives you a referral link.

Early sign-ups get launch access in order, so your place in line is set by when you sign up.

The signed message

The message uses Sign-In with Ethereum (EIP-4361 (opens in a new tab)), a standard text format for proving that you control an address. Before you sign, check that it shows:

• The site domain. If it does not match the site you are on, do not sign.
• The chain: Chain ID: 4663, which is Robinhood Chain.
• A one-time nonce. Each nonce works once and expires after 10 minutes.

What signing does not do

• It costs no gas.
• It sends no transaction.
• It grants no token approval.
• It gives no access to your funds.

Sessions

Once you sign, your session lasts 30 days. When it ends, you sign a fresh message to continue.

“Sign out everywhere” ends every session for your account at once, on every device and browser. Use it if you signed in on a shared computer or think a session was exposed.

Referrals

Every account gets a referral link. A referral is recorded only at sign-up: when someone opens your link and signs up, you are saved as the person who referred them. A referral cannot be added to an account that already exists.

What is stored

For each account, Hardfloor stores:

• Your wallet address.
• When you signed up.
• Your referral code.
• Who referred you, if anyone did.
• Your place in line.
• How many wallets signed up with your link.
• A session counter that “Sign out everywhere” increases.
• When you last signed in, so a signed sign-in message cannot be used twice.

No email or name is required, and signing in never gives Hardfloor access to your funds.