Loop XXI · Research
Research and analysis.
Research and analysis within Loop XXI. Our work studies Bitcoin, self-custody, monetary systems, technology, and the decisions involved in long-term ownership.
Test Your Backup Before It Matters
August 23, 2026
A reproducible recovery drill method for Bitcoin self-custody. Six steps, scratch wallet, trivial funds. Non-custodial by construction. The methodology is the offer.
Firmware Is Not Seed Provenance
August 21, 2026
A hardware wallet can run current firmware while protecting a seed created under old, flawed conditions. The COLDCARD advisory shows why every custody review should inventory key provenance, not just the current software version.