Bitcoin Challenge. Try to steal a plain text private key you can use
Hi HN, I'm releasing my round one public demo of a new browser security system I've been developing. There's a real Bitcoin private key (worth $20) in plaintext at app.redactsure.com. You can copy it, paste it, delete it, move it around - full control. But you can't see the actual characters or extract them. The challenge: Break the protection and take the Bitcoin. First person wins, challenge ends. Details: - Requires email verification (prevents abuse, no account needed) - 15 minute time limit per session - Currently US only for the demo (latency) - Verify the Bitcoin is real:…
In plain words
Bitcoin Challenge is a browser security demonstration that hides a real Bitcoin private key in plaintext while allowing full interaction—users can copy, paste, and manipulate it, but cannot view or extract the actual characters. The system uses cloud-hosted browser technology with a real-time model to selectively obscure sensitive data while keeping pages unmodified. Participants have 15 minutes per session to break the protection and claim the private key worth $20. It's designed for security researchers and developers interested in testing novel data protection methods.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hi HN, I'm releasing my round one public demo of a new browser security system I've been developing. There's a real Bitcoin private key (worth $20) in plaintext at app.redactsure.com. You can copy it, paste it, delete it, move it around - full control. But you can't see the actual characters or extract them. The challenge: Break the protection and take the Bitcoin. First person wins, challenge ends. Details: - Requires email verification (prevents abuse, no account needed) - 15 minute time limit per session - Currently US only for the demo (latency) - Verify the Bitcoin is real: https://redactsure.com/bitcoinchallenge Technical approach: - Cloud-hosted browser with real time NER model - Webpages are unmodified - Think of it as selective invisibility for sensitive data. You can interact with it normally, just can't see or extract it Looking for feedback on edge cases in the hiding/protection algorithm. Happy to answer questions about the implementation.
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