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The Archive01 documents on file“How Bitcoin's UTXO Model Prevents Double Spending”The Archive01 documents on file“How Bitcoin's UTXO Model Prevents Double Spending”

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How Bitcoin's UTXO Model Prevents Double Spending

Bitcoin stops double spending without a bank using unspent transaction outputs. Here's the exact mechanism, with a worked example.

Daniel Brooks6 min read / 13.06.2026
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