#multisig

2 posts

bitcoincustodyself-custody

BlockFills Frozen Assets Show Why 'Not Your Keys, Not Your Coins' Still Matters in 2026

A federal judge just froze 70.6 BTC held by institutional trading firm BlockFills. Here's what the case reveals about custody risk, multi-sig security, and why self-custody still beats even 'institutional-grade' platforms.

March 10, 2026·9 min read

bitcoin-coremusig2psbt

Bitcoin Core's MuSig2 PSBT Validation: Making Multisig More Robust

Bitcoin Core merged PR #34219 on March 4, 2026, adding pubkey validation for MuSig2 pubnonce and partial signatures in PSBT deserialization. This improves security for multisig wallet users and hardware wallet integration.

March 5, 2026·8 min read