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Posts by Sebastien Guillemot

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Recently thinking that maybe game engines should ship default terminal multiplexer configs

Lots of times running the engine requires setting up multiple terminal window and it would be nice to have some pre-configured

Experimenting with this idea for our engine

10 months ago 0 0 2 0

These projects continue to evolve over time

Mina working to solve the data issue in very clever ways (future thread/video)

Midnight has some interesting R&D on function composition

So I'm excited to see both continue to grow!

1 year ago 1 0 0 0

So both Mina and Midnight provide similar functionality

But they implement it very different ways, both with trade-offs!

They're both cleverly engineered, which is why we've followed both of them closely ๐Ÿ‘

1 year ago 1 0 1 0

Midnight, by thinking of data & variables as the primitive (instead of function composition), makes it easy to write data-heavy apps!

You can build
- games (secret information)
- RWAs (only reveal regulatory-relevant info)
- DeFi (don't reveal your position right away)
and more

1 year ago 0 0 1 0
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When a user wants to update the public state, they
โœ– don't reveal their private state
โœ…do prove something happened in their private state to allow them to update the public state

ex: prove you did something to earn 50 points (not revealing it's because you built a building)

1 year ago 0 0 1 0
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For example, you can represent a strategy game as some small amount of public information (ex: points, etc.)

And players have some private state (their position in the map, how much gold they have, etc.)

1 year ago 0 0 1 0
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(3) Midnight

Midnight, instead, keeps track of a public chain (a bit more similar to Bitcoin)

However, each user in Midnight has their own private state that is never shared with the rest of the blockchain

1 year ago 0 0 1 0

Need data? You need to fetch it from elsewhere (ex: somebody whose node kept a backup)

You can still prove the data somebody gives you is correct (since you know the latest block, aka what the end result should be)

but it makes data-heavy dApps on Mina bit hard to build

1 year ago 0 0 1 0
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However, I skipped an important part: what happens to the data of smart contracts?

Unlike public blockchains, the data is not kept around in the blocks! Everything just gets compressed into a proof

1 year ago 0 0 1 0
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So in Mina, by just a very simple concept of modelling ZK proofs of "functions" that you can "compose"

we automatically are able to build this super succinct blockchain like we wanted!

1 year ago 0 0 1 0
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Transactions are combining proofs of multiple functions

Blocks are just combining proofs of multiple txs

A blockchain is just combining proofs of multiple blocks!

1 year ago 0 0 1 0
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Note that functions can call other functions (function "composition")

In our example, to prove "foo", we need to prove "bar" first

but remember: we know how to combine proofs together! So combining the proof of "bar" into a proof of "foo" is easy!

1 year ago 0 0 1 0
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But how do we generate ZK proofs of smart contracts?

Well, you can think of smart contracts as a list of functions

So all we really need is a way to generate "proofs" of a function (which, fortunately, is a very well studied problem with known solutions)

1 year ago 0 0 1 0
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As we saw earlier, we can combine proofs

So this means we can now combine everything into just a single proof of the genesis block to the latest block!

1 year ago 0 0 1 0
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(2) Mina

Similar to how we "proved Waldo exists", what if we instead "prove" there exists a block transitions

AKA, given block A, prove there exists some set of transactions that give you block B as a result

Now, ever transition is a ZK proof

1 year ago 0 0 1 0
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(1) Regular chains

If you want to know the state of Bitcoin, you often need to sync the full Bitcoin blockchain to get full security

However, this takes a lot of space on your device which isn't ideal. It's worse on chains like Ethereum, and even worse on Solana

1 year ago 0 0 1 0

We'll explain how Mina & Midnight use these in three steps:

1. How do regular chains work
2. How does Mina work
3. How does Midnight work

1 year ago 0 0 1 0
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Mina & Midnight both use a technique called "recursive SNARKs" that allows you to combine proofs together

Conceptually, you can think of revealing you know the location of multiple Waldos across different pages at the same time

1 year ago 0 0 1 0

This gives you a way to show two things:
1. Privacy: you know where Waldo is (without revealing to your friend, as they can't see the rest of the book other than your small hole)

2. Compression: You've proven Waldo exists by only showing a small amount of info (a small hole)

1 year ago 0 0 1 0
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To show both are possible, imagine a "Where's Waldo" game

How to prove to your friend you found Waldo without spoiling the game for them?

Answer: Cover the entire book with a big sheet of paper, and cut a small hole exactly where Waldo is

1 year ago 0 0 1 0
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"ZK" stands for "Zero Knowledge Cryptography". It's a technique that gives you at least one of two things:

- Private computation (required for RWA, gaming, some DeFi apps)
- Massive compression (useful for L2s, bridges, data-heavy use-cases)

Midnight & Mina give both

1 year ago 0 0 1 0
Midnight & Mina: what makes them interesting ZK chains?
Midnight & Mina: what makes them interesting ZK chains? YouTube video by Sebastien Guillemot

You've probably heard about Midnight and Mina multiple times

But what are they? How do they give privacy? How can they connect to other chains? Why are they exciting?

I cover it all in my latest video + thread โ†“

www.youtube.com/watch?v=3vW-...

1 year ago 5 1 1 0
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every time I find a project I'd be interested in leveraging

> please don't be written in some bs language
> please don't be written in some bs language
> please don't be written in some bs language

the project's Github page

1 year ago 0 0 0 0
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refactor(otlp-transformer): json schema based validation by SebastienGllmt ยท Pull Request #5265 ยท open-telemetry/opentelemetry-js Which problem is this PR solving? The goal of oltp-transformer is to provide JS-friendly (de)serialization logic for traces, metrics and logs However, currently, there is no deserialization logic (...

Made my first PR to @opentelemetry.io !
github.com/open-telemet...

Used this to build a Javascript-based log collector so that you don't need to run a docker contain just to aggregate logs on dev builds

1 year ago 5 0 0 0

It was super fun to learn about color theory, and very satisfying that it tied multiple fields of math together with delightfully surprising results

Hope you enjoyed reading this as much as I enjoyed writing it!

1 year ago 0 0 1 0
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material-chalk Generate beautiful colors from namespaces based on color theory. Latest version: 1.0.2, last published: an hour ago. Start using material-chalk in your project by running `npm i material-chalk`. There...

I've published the Javascript code to generate colors like this yourself for your own tools entirely free and open source! (on both NPM & JSR)

www.npmjs.com/package/mate...

1 year ago 0 0 2 0
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This means that every color generated by our tool can also be used to generate a great Material Design color scheme !

This makes it super easy to have not just one color per system in your app,
But even generate colorful dashboards and subcomponents that feel color-aligned!

1 year ago 0 0 1 0
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Material Design has a recommendation for which color to use to create your color palette: its saturation should be above "48"

and for brightness 68,69,70

no matter which color you pick, there exists a choice with saturation above 48๐Ÿคฏ

1 year ago 0 0 1 0
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In fact, brightness levels 68, 69 and 70 are the only brightness levels with a special property!

Many Anrdoid apps and websites use a design system called material design created by Google

It allows creating beautiful color schemes for your app on a color (ex: your brand color)

1 year ago 0 0 1 0
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Great! So now we know which brightness to pick!

and it gives us these beautiful colors, all while having a consistent brightness!

1 year ago 0 0 1 0