Bitcoin Glossary

Double Spend

Also known as: double spending, double-spending

The attempt to spend the same Bitcoin twice. Bitcoin's proof-of-work consensus mechanism and blockchain prevent this — it was the core problem Satoshi solved.

Lessons mentioning "Double Spend"

Pre-Bitcoin Era UTXOs: Atomic Units of Value Transaction Inputs Transaction Verification by Nodes Network Attacks and Defenses Satoshi's Whitepaper Analysis