UTXO Model and Coin Control

11 min readinteractiveIncludes quiz · 5 questions

Master Bitcoin's UTXO model and learn advanced coin control techniques for privacy and efficiency.

UTXO Fundamentals:

  • •Unspent Transaction Output: Bitcoin's accounting model
  • •No Balances: Only unspent outputs
  • •Atomic: Outputs must be fully spent
  • •Change: Excess returns as new UTXO
  • •Coin Age: Older coins = higher priority
UTXO Model Explained
UTXO Model Explained

Coin Control Benefits:

  • •Privacy: Choose which coins to spend
  • •Fee Optimization: Consolidate during low fees
  • •Dust Management: Combine small UTXOs
  • •Labeling: Track coin sources
  • •CoinJoin Prep: Prepare equal-sized UTXOs

Test Your Knowledge

This lesson includes a 5-question quiz (passing score: 80%).

Quiz functionality available in the mobile app.