Double spending
A double spend is an attempt to spend the same bitcoin output more than once. Bitcoin’s validation rules and proof-of-work ordering resolve conflicting spends.
Why it matters
A double spend is an attempt to spend the same bitcoin output more than once. Bitcoin’s validation rules and proof-of-work ordering resolve conflicting spends.
Key ideas
- A double spend is an attempt to spend the same bitcoin output more than once. Bitcoin’s validation rules and proof-of-work ordering resolve conflicting spends.
- This topic belongs to California Bitcoin’s transactions knowledge layer.
- Use primary and technical sources where possible, and distinguish protocol facts from market narratives.
Primary and technical sources
Bitcoin Developer DocumentationBitcoin.orgBitcoin: A Peer-to-Peer Electronic Cash SystemSatoshi Nakamoto