Based on the structure, it resembles an internal naming convention, possibly from:
Rafi's mouth thinned. "A woman named Sera. She used to carry the playlists for our broadcasts. After—" He gestured at his chest, at a place that seemed to remember a bruise. "She kept a minute of her voice saved on a cassette and hid the list nearby. She said if anything happened she'd make a sign where the lamp meets the arch. We thought it would be safer than burying the names away in the city registry." juq032 engsub015826 min
Let’s dissect juq032 engsub015826 min into its probable components: Based on the structure, it resembles an internal
Files come and files go. Some are nothing more than noise. Some are doors. For Mira, a tidy string of letters and numbers led to a courtyard under a sodium lamp, to a tin beneath a hatch, and to a list that meant more than the sum of its lines. For one minute, a voice had said, "If you find this, don't tell anyone." For the next minute, careful hands listened—and the city remembered itself a little better. juq032 : This part could refer to the
Mira held up the tin. "Who filmed the tape?"