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Daily Brief Tue, Jun 30, 2026 2 min read

AI day: six infrastructure releases, no models

Bitcoin

  • Bitcoin Safe 2.0.0. Compact block filters now default; existing users see a migration notification.
  • Keystone 3 2.5.0. Improved Dice Roll Entropy Validation; Improved Unlock Passcode Verification.
  • Specter Desktop 2.1.10. Create full backup before upgrading; no specific changes listed in summary.
  • NodeGuard 0.25.2. Fixes rebalance races including probe kill, oscillation, and double-pay; blocks same-peer rebalances.

Privacy

US tech](https://proton.me/business/blog/openai-gpt-5-6)**. Proton commentary on US export restrictions affecting GPT-5.6 availability in Europe.

AI

Primary Sources