Casa's Jameson Lopp Urges Bitcoin Holders to Maintain Self-Custody Over Spot ETFs

Casa Chief Security Officer Jameson Lopp has issued an open letter advising Bitcoin holders against relinquishing self-custody to third-party custodians or spot exchange-traded funds. Lopp stated that delegating custody replaces operational risks with counterparty exposure, potential asset freezes, and government seizures. The warning comes amid heightened anxiety following recent wallet exploits, including a Coldcard seed-generation flaw tied to roughly $90 million in suspected Bitcoin thefts and a Qubic wallet flaw causing $1.4 million in losses. Lopp advocated for multisignature architectures distributed across distinct hardware manufacturers and geographic locations to protect assets.