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Bitcoin Is Not Private. Can This Fix It? | Misha Komarov & Clara Shikhelman — Key Takeaways

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Bitcoin Is Not Private. Can This Fix It? | Misha Komarov & Clara Shikhelman

What Bitcoin Did1h 12mNov 2, 2026

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Shielded Bitcoin — Zcash-style private BTC transactions with hidden sender, receiver, and amount — can work on Bitcoin without any fork, soft fork, or trusted operator, via a novel mechanism called witness encryption combined with "pipes."

Key takeaways

Creators admit the cryptography is not yet secure enough for billions

Creators admit the cryptography is not yet secure enough for billions

  • Clara: 'today? No. Absolutely not' — would not sleep at night with 30% of BTC shielded
  • Need to exhaust all potential attack surfaces before recommending real funds

Shielded Bitcoin brings Zcash-style privacy to Bitcoin without a fork

Shielded Bitcoin brings Zcash-style privacy to Bitcoin without a fork

  • Uses witness encryption to unlock UTXOs via proof, replacing custodial mixers and coordinators
  • Zcash's design was originally intended for Bitcoin but was infeasible; now it returns via Pipes

Crowdsourced attack challenges precede any recommendation to use the protocol

Crowdsourced attack challenges precede any recommendation to use the protocol

  • Misha: BTC will be locked behind Pipes by end of year with onchain break-it-to-take-it bounties
  • Open challenges have already received valid attacks, forcing a revised paper

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In this video

  1. 1mIntroduction
  2. 2mBitcoin Privacy Without a Fork
  3. 4mBeyond CoinJoin and Mixers
  4. 11mPIPES and Witness Encryption Explained
  5. 17mEssential Upgrades vs. Optional Changes
  6. 27mWhat’s Built and the Road to Launch
  7. 29mHow Shielded Bitcoin Transactions Work
  8. 37mWithdrawing Bitcoin and Breaking the Trail
  9. 45mWhat Else Can PIPES Enable?
  10. 50mSecurity Testing and Incentives to Find Attacks
  11. 57mPrivacy Developers and Legal Risks
  12. 1h 5mCriticism, Feedback and Next Steps

“Bitcoin being resilient to changes is what gives people this feeling of trust, feeling of safety that it's a safe harbor.”

— Misha

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