What is a Lightning invoice?

A Lightning invoice is a request for sats. You scan or paste it, pay, and it settles in seconds. On Outsat, that payment is the sit.

A Lightning invoice is a bill for bitcoin, written for Lightning. It says how many sats to send, and where. You scan a QR or paste a string that starts with lnbc. Your wallet pays it. Seconds later it is done.

On Outsat, that invoice is the sit. It clears, your host lands. It expires or fails, you don't rank. No IOUs. Rules.

What it looks like

• A QR on the pay screen
• A long bolt11 string — usually starts with lnbc
• An amount (we set it — 1,000-sat steps)
• An expiry. Don't pay a dead invoice and expect a seat

You do not send to a "Lightning address" to sit. You pay the invoice we made for that sit.

Pay, then rank

1. Put a link on the homepage.
2. Pick an amount.
3. Hit Outsat. We make the invoice.
4. Pay it in any wallet that can pay Lightning.
5. When it clears, the host sits. How to rank.

If the wallet says failed, you did not sit. Try a fresh invoice. We do not refund a payment that never landed, and we do not credit one that didn't clear.

Why not on-chain

An on-chain address is a mailbox. A Lightning invoice is a bill with an amount and a clock. A 1,000-sat on-chain send can cost more in fees than the sit. Lightning vs on-chain.

Invoice vs the rail

The rail is Lightning. The invoice is one payment on that rail. People building on Lightning use the same object — wallets, merchants, games. Ours just moves a row on a board.