Bitemporal sweep over an entity’s memory

fact.recorded / fact.retracted events on the TRANSACTION-time axis — when the graph learned and unlearned things, not when they were true; each recorded event also carries validFrom, the valid-time instant, for readers that want the world’s order. since / until page the window; recordedAt cuts to events known by T. userId is honoured only while READ_SURFACE_USER_SCOPE is on (this surface predates migration 0055 and otherwise pins userId IS NONE); a user-bound token is pinned to its own end user, and a mismatch is 403.

Required scope: brain:read.