What ℏ is

Axiom B: one element ε ∈ ℒ with no σ-image. ε is the minimum viable splinter — the smallest possible break.

Not two elements. Not a fraction of an element. One.

Every actualisation event — every time the now writes a record — involves at least one ε.

One coupling. One break. One distinction between 0 and 1 for one degree of freedom.

That is the minimum you can write.

Chapter 1 derived the Schrödinger equation from the axioms via Wigner’s theorem and Stone’s theorem. Stone’s theorem gave U(t) = e^{−iHt/ℏ} for the unitary evolution operator.

ℏ entered as the scale factor between the Hamiltonian’s eigenvalues and the time parameter.

The identification: ℏ is the action-scale of the minimum record.

One record = one ℏ of action.

Chapter 1 treated this as an identification — form forced, constant identified. KS-Q.8 was left LIVE — HARD.

This chapter closes it.

The identification is forced by the axiom structure. There is no alternative scale factor compatible with {S, B, R, C}.