Asklemmy

43958 readers

1396 users here now

A loosely moderated place to ask open-ended questions

Search asklemmy 🔍

If your post meets the following criteria, it's welcome here!

Open-ended question
Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
Not ad nauseam inducing: please make sure it is a question that would be new to most members
An actual topic of discussion

Looking for support?

Looking for a community?

Lemmyverse: community search
sub.rehab: maps old subreddits to fediverse options, marks official as such
!lemmy411@lemmy.ca: a community for finding communities

~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~

founded 5 years ago

MODERATORS

Is it possible for devices on an online group chat to toss a coin without trusting each other and the server? (discuss.tchncs.de)

submitted 6 months ago by smileyhead@discuss.tchncs.de to c/asklemmy@lemmy.ml

41 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] xmunk@sh.itjust.works 2 points 6 months ago

Let's break out some scenarios, I'll assume we are always an honest actor...

Scenario 1, the data is all collated and published - you look at the ledger and see the value you reported is accurately recorded in the ledger... you poll other servers and they all also report that the inputs were accurate, you also take the ledger and re-evaluate the result and it matches what the server reported. What action should be taken? How many bad actors exist? Is the server a bad actor?

Scenario 2, the server collects and reports the data, the ledger looks right to you, but one server reports that their value was manipulated. The ledger does match the computed value though and it's currently 1, should it be 0 instead? What action should be taken? How many bad actors exist? Is the server a bad actor?

Scenario 3, the server collects and reports the data... 70% of clients report manipulation, the ledger is consistent, though. What action should be taken? How many bad actors exist? Is the server bad actor?