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Sarah Jamie Lewis Profile picture
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Jun 23, 2018 • 5 tweets • 2 min read
lol this entire whitepaper is "we plan to build a privacy preserving smart contract blockchain" but we haven't really worked out how to do it yet.
They are apparently backed by like 12 venture capital funds...what the fuck is wrong with the world.
Throwing this out here again, because wtf not.

I really don't want to build this I already have way too much work, please just donate to @OpenPriv and we will build actual cool privacy tech that makes the world better.
@OpenPriv That fucking blockchain section though "the identity chain uses PoW or PoS or any other..."...like woah those are fundamentally different models, with different economic security models...you can't just throw them all in there.

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More from @SarahJamieLewis

Sarah Jamie Lewis Profile picture
Feb 20
Begging crypto twitter to stop conflating the orders of a Canadian Provincial court based on well established legal procedures with potential impacts from Federal emergencies act invocation.

There is a lot to criticize and be concerned about, but conflation muddies the water.
I am very troubled by the invocation of the act - and more so with statements made by MPs to put forward legislation to make some of the powers relating to financial surveillance and/or censorship permanent.

While all extra-judicial freezing of assets is reprehensible I am very concerned with claims made in the house of commons this morning that Canadians who donated small amount of money are having their accounts frozen - if verified, those kinds of actions need intense scrutiny.
Read 7 tweets
Sarah Jamie Lewis Profile picture
Jan 26
Deletion in p2p systems is weird because it violates many of the expectations that people have from centralized solutions.

e.g. If Alice purges all data about Bob as a contact, then the next time Bob attempts to connect to Alice it will be interpreted as a fresh request.
Alice is then left with 2 options: either add Bob as a contact again, or block Bob from all future conversations. Nether is great.

So "deletion" must mean something else to the app e.g. maybe we want to only display a new authentication request if Bob actually sends a message.
But that necessitates a "shadow record" or "placeholder" sitting in the storage engine that Alice might be unaware of if she has expectations other systems.

We can build UX to try and break those expectations, but "deletion" is then fundamentally the wrong word.
Read 10 tweets
Sarah Jamie Lewis Profile picture
Jan 25
Pretty ominous considering the UK government:

1. has recently funded a propaganda campaign against end-to-end encryption

2. is pushing through laws which target the awful, and deliberately vague notion of "conduct that is not illegal but has the potential to cause harm".
It's no secret that I have a hold "professional organizations" and "registries" as a whole in pretty low regard. One of the reasons I got into hacking in the first place was because it was one of the few paths where progress was not gate-kept by useless bureaucratic bullshit.
I'd be inclined to just argue along those lines if it wasn't for the fact that I am genuinely fearful of the authoritarian direction the UK has been heading down for the last 15 years or so - and what governments will do with the ridiculous amount of power they are accumulating.
Read 5 tweets
Sarah Jamie Lewis Profile picture
Jan 24
In one future: identity is "verified" through intrusive facial analysis & state documents. Data is hosted, & trivially censored, by large conglomerates.

In another future: identities are bound through cryptography & data is distributed through uncensorable overlay networks.
There are laws being debated around the world right now that attempt to set the course for a future where human interaction is mediated through universal surveillance.

There is a very real choice to make regarding which future you want to contribute to, and build towards.
Through action, or inaction, you will contribute towards building one of these futures.

You have to ask yourself if the paths you are, or the decisions that your are making, are leading to a future that you want.
Read 6 tweets
Sarah Jamie Lewis Profile picture
Jan 21
Metadata resistant app question of the day.

In @cwtch_im, file sharing is done via a torrent-like protocol where the file is chunked & each part can be requested individually (maybe from different people). Only the root hash is initially sent.

How should acks work?
A few caveats:

(2) Is currently implicit in the protocol as all messages are acknowledged

(3) might not always be possible right away (in group contexts) and so requires some extra effort on the recipients end.
Option (3) Also viscerally *feels* like a read receipt to me, even though it isn't necessary (we do allow auto downloading of images e.g.) - and so I think if we went that direction I would feel compelled to make it optional (but then it isn't an ack...)
Read 8 tweets
Sarah Jamie Lewis Profile picture
Jan 14
As PoS is seen as inevitable for some cryptos there is an interesting meta shift away from "stop saying our consensus is centralized" towards "yes, the consensus is 'technically' centralized but *how* we arrive at consensus is less important than *what* we do with the consensus"
A few years ago i think I would have been under the impression that such rhetoric would effectively kill a community as they drop their committent to decentralization and concentrate power in a few hands.

lol
It feels like we are heading towards a point where there are the very few PoW currencies that have enough staying power to survive, and the rest of crypto will blend into a handful of very centralized payment processing hubs.

All claiming victory.
Read 11 tweets

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