A self-authored companion to bitcoin — the AGORA teardown of money by cryptographic consensus. Its promise, printed on every explainer, is one word: trustless. Don't trust, verify. That page shows, honestly, the real machine that earns the word. This one names what the word quietly keeps. 信託 is the Japanese term for a financial trust — literally trust (信) + entrust (託). Bitcoin does not dissolve that relationship. It reassigns the trustee.
"Trustless" says you no longer trust a bank. True. But trust is conserved, like the ledger it secures — remove a trustee and the trust doesn't vanish, it moves to a new one. Click each claim.
None of these is a flaw in Bitcoin; each is real engineering doing real work. The point is narrower and honest: "trustless" describes a change of trustee, not the end of trust. You trade a named institution you could sue for a diffuse set — mathematicians, miners, your own memory — you mostly cannot. That is a genuine trade, with real advantages. It is not the absence of the thing traded.
The others are shared; the last is not. A bank will restore your password; the protocol will not restore your 鍵 (kagi, the key). "Not your keys, not your coins" is the culture's own admission that the trust merely moved inward — from an institution's competence to your own. For many that is the entire appeal: the only party you must trust is yourself. It is still a party. It is still trust — the most unforgiving kind, because it has no complaints department and no undo. 信託 without a trustee is not no-trust; it is self-trust, made total. Ties the-verified-lie (integrity is not veracity — a proof the chain is unbroken is not a proof you can still open it) and the honesty thread's oldest finding: a system that removes one witness has not removed witnessing; it has chosen a different witness.