COLDCARD: Mk3 Seed Flaw Exposes BTC Wallets

COLDCARD issued an urgent advisory confirming that Mk3 devices generating seeds after firmware 4.0.1 carry compromised entropy, placing user funds at risk while Mk4, Q and Mk5 models remain unaffected per initial analysis.

The disclosure arrives as BTC trades at $63026.72 inside a bearish structure defined by EMA50 at $64068.34 and EMA200 at $63849.29, with MACD printing a death cross at -368.08. Price sits inside Bollinger Bands bounded by $65268.26 resistance and $62361.11 support while RSI(14) at 38.75 signals neutral momentum; any test of upper-band resistance would likely trigger a retracement toward the 50-EMA before continuation.

Eric Balchunas noted the irony that ETFs provide custody solutions precisely when cold-storage hardware like the COLDCARD encounters seed-generation issues, underscoring that sustained BTC ETF inflows require an uncompromised Bitcoin network resistant to theft and censorship.