roblox has ~50mm daily users (DAU), and if my math is correct (it probably isn't) you could have hour granularity (only 0-23) timestamps on 6 files, each day, a

roblox has ~50mm daily users (DAU), and if my math is correct (it probably isn't) you could have hour granularity (only 0-23) timestamps on 6 files, each day, and track 191mm unique users. I used roblox because i knew their DAU off-the-cuff - because roblox requires a login, they know who you are anyhow. But if you do 1 second granularity a mere 2 cache timestamps are enough to fingerprint everyone on the planet, each day. is my math wrong, here?