⚡ The Lightning Network

Instant, global, and nearly free — how Bitcoin scales for spending

Bitcoin's base layer does about seven transactions a second, which is fine for settlement and hopeless for coffee. Five lessons on the layer built to fix that: why block space is scarce, how a payment channel turns hundreds of payments into two on-chain transactions, how routing reaches someone you've never met without trusting anyone in between, and what using it actually looks like — including the liquidity limits nobody mentions in the pitch.

The Problem & the Idea

Why block space runs out, and the bar-tab trick that gets around it.

  1. 🧱 The Scaling Problem
    Seven transactions a second. So how do you buy coffee?
  2. 🧾 Payment Channels: The Core Idea
    A bar tab, but cryptographic — and it settles itself.

The Network

Reaching strangers safely, why it costs so little, and living with it day to day.

  1. 🗺️ Routing: Paying Someone You've Never Met
    No direct channel needed — just a connected path.
  2. 🏁 Why It's Instant & Nearly Free
    A fraction of a second, for a fraction of a cent. Here's why.
  3. 📱 Using Lightning in Real Life
    Wallets, custody trade-offs, and what it's actually for — plus a recap.