P2SH and the 80-Bit Collision Threat
How P2SH lets senders pay to the hash of a complex script, and why short hashes leave only ~80 bits of collision security.
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Feynman technique
Learn with the Feynman Technique
Explain each idea in your own words in handwriting, then upload a photo for AI critique. Two attempts per question — there's no "right" answer, only depth of understanding.