matrix-spec-proposals/event-schemas/schema/core-event-schema/unsigned_prop.yaml

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title: UnsignedData
type: object
description: Contains optional extra information about the event.
properties:
  age:
    description: The time in milliseconds that has elapsed since the event was
      sent. This field is generated by the local homeserver, and may be incorrect
      if the local time on at least one of the two servers is out of sync, which can
      cause the age to either be negative or greater than it actually is.
    type: integer
  redacted_because:
    description: The event that redacted this event, if any.
    title: Event
    type: object
  transaction_id:
    description: |
      The client-supplied transaction ID, for example, provided via
      ``PUT /_matrix/client/r0/rooms/{roomId}/send/{eventType}/{txnId}``,
      if the client being given the event is the same one which sent it.      
    type: string