FAQ

Is BlackVault a bank?

No. BlackVault is self-custodial software — you hold the keys, we never touch funds. “Private banking” describes the experience, not a license.

Which network does it run on?

Robinhood Chain mainnet (chainId 4663), an Arbitrum Orbit chain. Fees cost a fraction of a cent. Ethereum, Arbitrum, Base, and Optimism are staged as upcoming networks.

What do private transfers actually hide?

The link between sender and recipient. Funds land on one-time addresses that observers can’t connect to anyone. Amounts remain visible on-chain; hiding amounts (shielded pools) is on the roadmap.

Can someone find my money if they see my st:eth address?

No. The st:eth:… string is a meta-address — payments to it are delivered to fresh addresses derivable only with your keys. Sharing it reveals nothing about your balance or history.

What happens if I clear my browser or lose my device?

Sign back in with Google/email — your wallet and names come back. Your stealth identity re-derives from a signature, and scanning re-finds unclaimed payments. The local activity journal and private log are device-only and won’t follow you.

Why does the app say “No ETH for gas”?

Every transaction needs a tiny ETH fee. Bridge a little ETH to your address and the warning disappears — the app blocks sends early rather than letting them hang.

How much does a name cost?

Free or a small one-time USDG fee, depending on current settings — the price is always shown before you slide to claim. Changing your name costs the fee again and releases the old name.

Can I use my key elsewhere?

Yes — export it any time (Settings → Export private key) and import into MetaMask, Rabby, or any EVM wallet.

Is the code open?

The architecture, mechanisms, and complete UI are public in Blackvault-App; the deployable core is private while the product matures.