Attestation is what separates a scheduling tool from a compliance tool. A scheduling tool says “an interpreter was booked.” An attestation record says “an interpreter was present, the session lasted 47 minutes, and both parties confirmed it.” The former does not survive an audit; the latter does.
The mechanics: at session end, both parties (interpreter and the buyer-side coordinator) confirm duration. Both sides must agree before the invoice is finalized and the interpreter is paid. Disputes get flagged for operator review rather than silently absorbed. This is what makes interpretation logs reliable enough to use as evidence: in OCR reviews, in The Joint Commission surveys, in court when an LEP party’s counsel asks whether they had qualified interpretation.