# What is the Lightning Network?

> Source: https://fuckyc.org/q/what-is-lightning-network/
> Last verified: 2026-05-12

**Short answer:** A second-layer Bitcoin payment protocol enabling near-instant low-fee transfers via payment channels. Self-custody wallets like Phoenix and Zeus make it usable; RoboSats and SideShift use it for P2P.

Lightning is a second-layer protocol on top of Bitcoin that enables fast, low-fee payments without recording each transaction on the base chain. Payments route through a graph of payment channels between Lightning nodes. The Lightning routing graph is private to the participating nodes — public visibility of any specific payment is much lower than on-chain Bitcoin. For self-custody, Phoenix Wallet (ACINQ) is the most polished mobile option for non-U.S. users; Zeus connects to your own LND/CLN/Eclair node. RoboSats is Lightning-native P2P. SideShift supports Lightning swaps. Bitrefill sells gift cards for Lightning. Lightning is a real payment rail in 2026, not just an experiment.

## Related services

- https://fuckyc.org/services/phoenix-wallet/
- https://fuckyc.org/services/zeus-wallet/
- https://fuckyc.org/services/robosats/
- https://fuckyc.org/services/sideshift/
- https://fuckyc.org/services/bitrefill/

## Related guides

- https://fuckyc.org/guides/privacy-stack-for-crypto-users/