E1 -- Retained transformation record for Output 7, with file hashes
Authored teaching scenario. Every observation, prediction and record below was written for this exercise. None was produced by running image software or by examining an image, and nothing here supports a claim about how any real tool or forensic technique behaves.

Transformation record, retained in full for this output

  input   interim-2400x1600.jpg   sha256 4c9f...a71e
  resize  2400x1600 -> 1200x800   filter=lanczos
  output  output-7-1200x800.jpg   sha256 0b32...9dd4

  Hash of the file named as input, taken from the working directory
  at the time of the operation: sha256 4c9f...a71e  (matches)

The record names what this operation read and what it wrote, and the
input hash matches a file that was present.

This file contains the result of this request only. What it means for the
two routes is for you to say; the other requests are in their own files.