Frequently Asked Questions

Lightning is an open‑source retail payment system built on top of Bitcoin. Its main purpose is to enable extremely fast and cheap payments, much faster and cheaper than regular Bitcoin transactions, while retaining Bitcoin's security.

It's perfect for day‑to‑day spending and micro‑payments.

Of course! With Wallet of Satoshi you can pay a Lightning invoice or send directly to an on‑chain Bitcoin address.

When you scan a QR code (or paste it), WoS will detect the payment type and create the right transaction instantly.

Wallet of Satoshi (WoS) is a Bitcoin and Lightning wallet for iOS and Android focused on simplicity and great UX. Download from the app stores and you're on Lightning in seconds.

Yes, you can buy Bitcoin directly in the app in many countries. Tap the green “Buy Bitcoin” button on the main screen and follow the prompts. Availability and partners may vary by region.

A satoshi is the smallest unit of Bitcoin, equal to 0.00000001 BTC. The name honours Bitcoin's creator, Satoshi Nakamoto.

Custodial: sign in with your email to recover your balance and payment history on a new device.

Self‑custodial: you hold the keys. Follow the in‑app instructions to securely back up your wallet so you can restore it if you lose your device.

There is a fixed fee when sending BTC on‑chain. The amount varies with the state of the Bitcoin mempool and will be quoted before you confirm. We don’t control miner fees, so on‑chain can be expensive. We recommend Lightning for faster, cheaper payments.

A Lightning Address is a simple human‑readable address you can use to receive payments over Lightning. It looks like an email address (e.g. satoshi@walletofsatoshi.com) so it's familiar and memorable.

When you download Wallet of Satoshi you'll get a randomly generated Lightning Address instantly, with the option to choose a custom one in the app.

On‑chain transactions need miner fees. If the fee (chosen by you or your exchange) was too low for current mempool conditions, confirmation can take hours or days. We can’t speed this up. Your sending wallet or exchange may offer an option to accelerate.

The app will present the correct mode for your region. Self‑custodial is available everywhere. Custodial is available only in supported regions.

Yes. You can use the mode that’s available in your region and move your funds between modes as needed. Follow the in‑app instructions when switching to ensure a smooth transfer.

In custodial mode, we hold the keys on your behalf so you can enjoy instant setup and easy recovery. In self‑custodial mode, you control your private keys and are responsible for backups.