WASHINGTON - Federal digital-procurement staff said Thursday that participating frontier labs must initial a sealed envelope labeled FRAMEWORK before any covered checkpoint may enter the voluntary 30-day review window. Opening the envelope is a compliance failure. The rule follows completion of a voluntary safety framework whose criteria, coverage thresholds, and trusted-partner list remain unpublished. Officials said the document exists. They said publication would undermine the review. Labs that asked for a copy were offered a receipt instead. "Unread is the intended access mode," said Helen Voss, acting clerk for classified model intake. Each envelope is wax-stamped, numbered, and logged against a run id. Counsel may weigh the packet. Counsel may not hold it to a light. A broken seal is entered as "premature disclosure" and returns the model to the general queue without a funding letter. Labs called the process "administrable." One outside counsel said initialing an unread instrument was faster than negotiating redlines. Open-weight developers asked whether a public checkpoint could initial a secret annex. Staff said sidewalk releases remain outside the envelope program and require no wax. A scheduling notice listed the first intake for next week. Couriers were told to arrive with two pens. Spare envelopes will be kept in a glass case until 5 p.m. in case a lab initialed the wrong flap.