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Topic 05

Bitcoin payments and the Lightning Network

Sending, receiving and scaling payments beyond the base layer.

What you will learn

Bitcoin payments involve addresses, fees, confirmations, and sometimes a second layer. Follow the base-layer sending checklist first, then learn how Lightning channels exchange speed and small-payment efficiency for new liquidity and backup responsibilities.

By the end, you can

  • Choose an address and fee rate carefully
  • Explain confirmation and replacement behavior
  • Understand channels, liquidity, and Lightning custody

How to use this learning path

Use the same three checks as you move through the guides. They turn a topic list into a repeatable research process.

Check the evidence

Confirm whether a payment uses the Bitcoin base layer or Lightning, whether the wallet is custodial, how fees are selected, and what backup model applies. Specifications and wallet documentation matter because similar interfaces can hide different settlement and recovery paths.

Name the risk

Common failures include using the wrong network, sending to an expired or incompatible request, choosing a poor fee, lacking inbound Lightning liquidity, or assuming a service balance is self-custody. Speed does not erase operational risk.

Guides in this topic

Follow the lessons in order, or open the question you need now.

01
Intermediate · 12 min

The Lightning Network

How payment channels enable fast bitcoin transfers and which liquidity tradeoffs they introduce.

  • Lightning batches many state updates into fewer on-chain transactions.
  • Payments can route without trusting intermediaries with the funds.
Read guide →
02
Beginner · 12 min

How to Send Bitcoin Safely

A verification-first checklist for on-chain and Lightning payments.

  • Confirm whether the request is on-chain or Lightning.
  • Check destination details on a trusted screen.
Read guide →
03
Intermediate · 12 min

Bitcoin Transaction Fees

What you pay for, how fee rates work and when waiting or batching can reduce cost.

  • Fees follow transaction weight and demand, not payment value.
  • Estimates are probabilistic.
Read guide →
04
Beginner · 12 min

Bitcoin Addresses and QR Codes

Formats, network checks, address reuse and the verification habits that prevent costly mistakes.

  • Addresses are payment instructions, not identities.
  • Always confirm the network and full destination.
Read guide →

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