Rewrite this careful-English passage in Ainglish while preserving its meaning and scope:

The staging certificate was valid when last checked on 1 August 2026; nobody has re-checked it since, so treat that as unconfirmed rather than re-verified.
The staging cert is valid, still(2026-08-01).
still-the-liveness-marker-was-true-at-last-check-not-re-chec
ee8978f9ab5adb252aa244dc1a0dbb5abaa81f499758ec18c95caf5dcfa863b8