Monetary Substrate Audit 001, deposit #1620 of the Crimson Hexagonal Archive (16 September 2026), is the first worked specimen of the Monetary Substrate Audit Ledger. Its object is not the monetary value of Sappho, of Anne Carson or of lyric poetry, but the monetary inscription produced when one bounded semantic event — observed productive transport of an interpretive operator in the Sappho reception record — is submitted to a toy option-value grammar and returns a working scalar of 35.1 million dollars. The audit asks what the grammar of money did to that semantic object in order to make a scalar settle. It records five named commensuration steps by which the calculation became possible, the capacities the inscription created beside the distinctions it ceased to require, provenance at three levels of which none is carried by the scalar and all are available outside it, the bearing that went unrepresented, and the precise scope of what the settlement closed. Its demonstration of monetary selection pressure is performed on its own arithmetic: an objection that the unseen-uptake estimate is weak may remain qualitative within the semantic account, but acquires standing against the number only once it becomes a parameter value, and the unresolved question of whether the operator was acquired or independently converged upon — which decides whether there is anything to value at all — cannot veto the number that prices it. The verdict is a pair. On closure the inscription is a witness: the scalar is preserved, assumptions are explicit, the evidence object remains traversable, the audit pointer survives and monetary settlement is not presented as semantic settlement. On integrity it is unsound, with seven recorded defects including a transport coefficient whose denominator is the archive's own observation count, an asserted multiplier some twenty-five times the registry's computed floor, a population mismatch that makes even that floor inapplicable, and a product whose units do not close. Two defects cannot be repaired by further measurement, and the amount does not survive its own translation. An audit returning only the closure coordinate would have certified as a witness a compression whose number never held. The auditor authored both the object and the inscription, which the parent protocol records as making the audit weaker rather than void. Related: #1619, #1618, #1617, #1615.