Bitcoin insights, guides and analysis.
Where your bitcoin sits before you send, what pressing send does, who checks it and where the 0.05 BTC goes. Six beginner questions, one worked example.
A flawed fix to a Liquid rangeproof cache let an attacker mint about 4,000 unbacked L-BTC and peg out real BTC. What broke, and where Liquid stands now.
Peter Todd says fee-only Bitcoin mining is unstable and proposes demurrage as a soft fork. His argument, the math checked, and what his critics answer.
An old Coldcard firmware bug let attackers rebuild seeds offline and sweep Bitcoin. What broke, who stayed safe, and how to migrate an affected seed now.
Bitcoin goes on a Swiss tax return as übrige Guthaben in the securities list, at its 31 December value. Private gains stay tax-free; wealth tax is annual.
BIP-110 was a temporary Bitcoin soft fork to cap on-chain data. Nodes enforcing it split off on 8 August 2026 and stalled. The rules and fight explained.
Bitcoin in a Swiss Pillar 3a means a regulated Bitcoin fund or ETP held by the pension foundation, at most 5%, tax-deferred and never in self-custody.
A Swiss family foundation may only fund upbringing, a start in life or support of relatives, so it cannot simply hold Bitcoin for heirs. What else works.
A Raspberry Pi 5, a 2 TB SSD and Bitcoin Core 31.1 make a full node. Storage, power cost at Swiss rates, Tor, a private Electrum server and the backups.
Bitcoin salary and self-employed mining income owe Swiss AHV, IV and EO. In 2026 the salary rate is 10.6%; self-employed people pay 10.0% from CHF 60,500.
Run a Lightning node at home in 2026: Pi 5 or laptop, Umbrel, StartOS or RaspiBlitz, chain sync, first channel, inbound liquidity, backups, watchtowers.
Cold storage setup for Bitcoin in 2026: hardware selection, seed generation, passphrase decision, test transaction, recovery drill, and steel-plate backup.
