Monero Research Lab Meeting - Wed 12 July 2023, 17:00 UTC about meta HOT 1 CLOSED

17:03:58 <xmrack[m]> Meeting today?

17:04:43 <rbrunner> Wondering the same :) Last week UkoeHB said for a meeting somebody ready to manage it
would have to be found.

17:05:02 <rbrunner> And people not on holidays anyway of course

17:09:00 <xmrack[m]> I have a small update. Collected data from 11 and 12 output transactions on-chain over
the last 4 months trying to see if there was an obvious fingerprint of users with monerujo pocket change.
Neither myself nor rucknium could identify anything obvious at first glance.

17:10:08 <rbrunner> Already 4 months that this is in the hand of users? Time flies. No obvious fingerprint
sounds like good news, right?

17:11:08 <xmrack[m]> Pocketchange came out May 5 IIRC. I collected extra data to compare before/after its
existence

17:11:28 <rbrunner> Ah, ok

17:12:49 * xmrack[m] posted a file: (205KiB) <
https://libera.ems.host/_matrix/media/v3/download/matrix.org/aVDDSRfZjRvSJrSEhlCOeXdB/pocketchange11.csv >

17:12:50 * xmrack[m] posted a file: (102KiB) <
https://libera.ems.host/_matrix/media/v3/download/matrix.org/YdaTvLpXfUOsHTgeNHvzIPyd/pocketchange12.csv >

17:13:21 <xmrack[m]> Everyone, feel free to take a look for yourself and see if we missed something

17:14:40 <xmrack[m]> https://paste.debian.net/1285721/

17:15:02 <xmrack[m]> Here is my code if anyone wants to sanity check

17:17:59 <rbrunner> Wondering who was doing 12-out txs before Pocket Change, and why ...

17:18:35 <rbrunner> Pocket changing "by hand" perhaps

17:18:59 <xmrack[m]> I also noticed that if you turn off pocket change all of your outputs will be combined
back together which is an obvious true spend

17:19:26 <xmrack[m]> yea 12 is a weird number

17:22:00 <rbrunner> I recently saw an estimate somewhere that Monero currently may have around a million
users, and with so many you probably get almost everything sooner or later

17:37:33 <xmrack[m]> I take it back

17:37:37 * xmrack[m] uploaded an image: (21KiB) <
https://libera.ems.host/_matrix/media/v3/download/matrix.org/oksHZttIAqoKfEyiQNKotrSE/image.png >

17:38:04 <xmrack[m]> Clear indication of when pocketchange was released

17:38:59 <xmrack[m]> y-axis is the number of 12 output transactions within a block

17:45:00 * xmrack[m] posted a file: (857KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/xu
NFFvnJEascXgsjefpSGDlj/updated%20-%20pocketchange12.csv >

17:45:53 <xmrack[m]> The original spreadsheet was difficult to view the data. Here is an updated copy that
should make it a lot easier

17:51:20 <xmrack[m]> https://xmrchain.net/search?value=2884485

17:51:34 <xmrack[m]> This block had 13 transactions with 12 outputs