01 · Observe
The network stays over here.
The online computer watches the blockchain and prepares unsigned transactions. It never receives the keys required to spend.
02 · Isolate
The keys begin and stay offline.
A separate general-purpose computer enters a verified, disposable Linux environment. Security-critical work happens beyond the network boundary.
03 · Transfer
Approve transactions offline.
A Partially Signed Bitcoin Transaction crosses the boundary on removable media. The offline system can inspect and sign without requiring the Internet.
04 · Distribute
Redundancy provides recovery.
A 3-of-7 treshold spreads redundancy across locations, reducing risk of catastrophic loss. No single loss destroys access; no single copy authorises a spend.