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Show HN: Bitcoin and Quantum Computing – a three-part research series

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Show HN: Refund Guard – a policy gate for AI agents that can issue refunds

Show HN: A living Vancouver. Connor is walking dogs at the SPCA this morning

Show HN: A General Purpose KMC Crystal Growth Simulator in Rust-WASM

Show HN: Self-hostable STT service with a Deepgram-compatible listen API

Show HN: Docker-whisper: Self-hosted Whisper speech-to-text server (OpenAI API)

Show HN: Lines of Bash to automate LLM code review and fixes

Show HN: FeedSense – A Private Recommendation System

Show HN: serrors - Structured Errors for Go

Show HN: Age-PHP: a PHP implementation of age encryption (post-quantum)

Show HN: MarkitMe, Turn Anything into Markdown

Show HN: rtdiff – Realtime Git diff GUI and AI commits, companion for vibecoding

Show HN: OpenDescent, decentralised encrypted messenger, no servers, no accounts

Show HN: Excalicharts – Charting Library for Excalidraw

Show HN: Excalidraw-edit – Open and edit .excalidraw files from the terminal

Show HN: ColorPair – A free color-matching puzzle game for iOS

Show HN: When Clocks Drift Apart

Show HN: Audit the browser for malicious extensions removed from Chrome Store

Show HN: Animated ASCII art in pure SVG

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