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1075 sats \ 2 replies \ @anon 4h \ on: BTCPP Floripa 2026 - Hackathon Megathread bitcoinplusplus

Stealth — Bitcoin Wallet Privacy AnalyzerStealth — Bitcoin Wallet Privacy Analyzer

Team:Team:

•	Breno Brito 
- https://github.com/brenorb 
- https://twitter.com/brenorb 
- brenorb@zaps.lol
•	LordBabuino 
- npub1dkpmrtcuqlngclt27ftd8yec3vrmmxsehkvq2l6uns64w4q656rqapwlwd
- jorge.x7@gmail.com
- x.com/JorgeSantanaDev
•	Miranda
- https://x.com/_hsmiranda
- https://github.com/hsmiranda 
- https://nosta.me/35f80bdae3821a833935fa43c4bdc41d34ff9e5695f6ae3fbb35d0d2406855c0
•	Renato Britto
- x.com/natobritto

What We Built (1–3 sentences):What We Built (1–3 sentences):

Stealth is a local, read-only privacy auditor for Bitcoin wallets that analyzes UTXOs and detects privacy vulnerabilities such as address reuse, clustering signals, dust linkage, and exchange-origin fingerprints. It surfaces institutional-grade privacy insights directly to users without requiring private keys or sending data to third parties. Users can import a descriptor and immediately see where and how their privacy is exposed, along with actionable recommendations on how to improve their privacy.

Stack:Stack:

Bitcoin primitives: descriptors, UTXOs, transaction graph analysis
Backend: Java, Python, Quartus
Frontend: React, TypeScript
Node integration: Bitcoin node backend
Architecture: local-first, read-only privacy analysis engine
Landing page: Shakespeare

Submission:Submission:

https://loot.fund/hackathons/bitcoin-exploits-edition/applications/8

Repo:Repo:

https://github.com/LORDBABUINO/stealth

Next Steps:Next Steps:

  • Mainnet support
  • Expanded privacy heuristics (amount and timing fingerprinting)
  • Interactive cluster visualization
  • Wallet integrations for real-time privacy monitoring
  • Transaction simulation to preview privacy impact before spending
  • Mobile support
  • Open-source release and ecosystem integrations
write
preview
5 sats \ 1 reply \ @Scoresby 4h

This seems like a very useful concept. I'm curious about how the age spread and behavioral fingerprint work. Cool to see people working on stuff like this.

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122 sats \ 0 replies \ @c6762b49e3 2h freebie

When we spend an old UTXO with a new one, it's telling everyone you're an OG, which can mean you have lots of Bitcoin, for example.
A behavioral fingerprint pattern would be, for example, receiving $5k from your boss every 1st day of the month, at 2pm. This can leak that it's your salary when you spend it, it can review which company you work for depending on the privacy practices of your employer, and help an attacker to link your addresses, which otherwise, would be completely isolated.

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