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The Polylog Crypto Intelligence Brief

Morning Edition · Friday, July 3, 2026

Bitcoin's Contract Language Gets a Post-Quantum Proof of Concept

Blockstream's Simplicity has been used to build a working post-quantum signature verifier, moving quantum defense from concept toward functioning Bitcoin-adjacent code.

Bitcoin's Contract Language Gets a Post-Quantum Proof of Concept

Blockstream relaunched the website for Simplicity, its low-level contract language for Bitcoin sidechains, and consolidated work that advances quantum resistance in practice. As the company's blog describes, Simplicity deliberately excludes…

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Quantum Risk Moves From Theory to Crypto Roadmaps

Over the next 3-6 months, quantum-resistance becomes a concrete design and custody concern across major chains and institutional custodians, driving opt-in post-quantum schemes and 'long-dormant coin' risk discussion.