Use the base chain differently.
Bitcoin’s base chain is a shared settlement record. Recording every tiny purchase directly on it can be slow or expensive when block space is busy. Lightning lets participants make payments without recording every individual payment on the base chain.
Channels use bitcoin committed on-chain. Participants update balances off-chain, and payments can route through connected channels. Channel opening and closing, or resolving a dispute, can involve on-chain transactions.
Two paths, different tradeoffs.
These paths illustrate how settlement differs. They are not a speed benchmark. An on-chain payment waits for block inclusion and confirmations. A Lightning payment can complete quickly when a viable route and enough liquidity are available.
Settle every transfer—or update a channel.
On-chain payment
- Prepare + broadcastPay a transaction fee.
- Block confirmationWait for inclusion and confirmations.
- Shared ledgerThe payment is recorded on-chain.
Lightning payment
- Fund channelsOn-chain setup, directly or through a wallet arrangement.
- Route paymentsUpdate balances off-chain; liquidity and fees matter.
- Settle channelsClosing or dispute resolution can return to the base chain.
| Question | Base chain | Lightning |
|---|---|---|
| What can delay it? | Block inclusion and confirmations | Routes, liquidity and availability |
| What costs apply? | Transaction fees | Routing, service and channel costs |
| Who holds keys? | Depends on wallet | Depends on wallet |
Think in useful little purchases.
A cup of coffee, one article or a short computing job may not justify a large payment fee or a long wait. Lightning can help make those small exchanges practical. A satoshi, or sat, is one hundred millionth of a bitcoin.
Routing is not magic. Channels need liquidity in the right direction. A route can fail, a wallet can be offline, and routing or service fees can apply. Opening or closing a channel also has costs. “Fast” does not mean “always free” or “always available.”
Ask who does the channel work.
Some wallets manage much of the channel operation for you. Some also hold the keys. Others offer self-custody with different operational and backup responsibilities. A Lightning logo alone does not tell you who controls your money.
Before relying on a wallet, understand its custody model, fees, limits and recovery instructions. Lightning recovery can involve channel-specific state or provider support; do not assume every backup works like a simple base-chain wallet.
Check your understanding
A wallet supports Lightning. Does that prove it is self-custodial?
No. Lightning describes a payment network. Custody depends on who controls spending keys and on the wallet’s design.
Sources & further reading
Reviewed 16 October 2026. Sources support the explanations; hypothetical examples and diagrams are labelled where they appear.
- Lightning Network: overview and specification
Payment channels and the purpose of off-chain payments.
- Lightning Labs: The Lightning Network
Further technical reading on channels, routing and liquidity.