Ask/Knowledge Atlas/Double spending
Transactions · Modern Bitcoin

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.

Context

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.

Canonical knowledge

What California Bitcoin maintains

  • 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.

Primary and technical sources

Evidence before assertion
Bitcoin Developer Documentation

Bitcoin.org

Tier — · technicalBitcoin: A Peer-to-Peer Electronic Cash System

Satoshi Nakamoto

Tier 1 · primary

Related concepts

Continue through the knowledge graph
MempoolTransaction feesUTXOInputs and outputs
Machine accessAgent-ready
https://californiabitcoin.org/api/agent/v1/topic/double-spendhttps://californiabitcoin.org/api/agent/v1/search?q=Double%20spendinghttps://californiabitcoin.org/api/agent/v1/coveragehttps://californiabitcoin.org/api/agent/v1/sources