A year ago, a hacker exploited CremaFinance’s Solana flash-loan smart contract for $9M which he then converted to ETH and XMR.

Today, the U.S. DOJ announced the capture in New York of the hacker who left enough breadcrumbs to get caught despite using TornadoCash to launder the proceeds of the hack.

The hacker is a NYC-based “senior security engineer at an international technology company” with expertise in blockchain and smart contract security audits. Looking up his name returns a senior security engineer working at Amazon in NYC. He is facing up to two 20-year sentences.

Oh, and he was arrested by Homeland Security special agent Chad.

Intel is discontinuing its NUC line, after stopping its investments in the SSD/NVMe line in 2020. This is a loss for stakers who enjoyed Intel’s NUCs for their price/performance ratio. There are alternative OEMs of course - though Intel pioneered the form factor.

Don't forget, the Ethereum Foundation is doing an AMA! Here is my favorite comment in the thread, by Justin Drake, pasted (mostly) in its entirety so that you don't have to jump over to Reddit to read it (the technical stuff at the end got cut off cause kbin has a 5000 character limit).

What are one-shot signatures

One-shot signatures are magical cryptographic signatures where the private key can only sign a single message. One-shot signatures exist (so far only in theory, here) thanks to quantum physics. The private key is a quantum superposition which cannot be copied (see quantum no-cloning) and which must be measured (and therefore destroyed) to produce a signature.

Importantly, the signatures themselves are normal bits and bytes and one-shot signatures do not require quantum communication between parties.

why are they so special?

One-shot signatures are exciting because they significantly open up the cryptographic design space, even beyond indistinguishability obfuscation which is commonly (and incorrectly!) seen as the pinnacle of cryptography. For blockchains specifically, they are a tool to tackle long-standing problems. Specifically, one-shot signatures give us:

• slashing removal: The double vote and surround vote slashing conditions can be removed.

• perfect finality: Instead of relying on economic finality we can have perfect finality that is guaranteed by cryptography and the laws of physics.

• 51% finality threshold: The threshold for finality can be reduced from 66% to 51%.

• instant queue clearing: The activation and exit queues can be instantly cleared whenever finality is reached without inactivity leaking (the default case).

• weak subjectivity: Weak subjectivity no longer applies, at least in the default case where finality is reached without the need for inactivity leaking.

• trustless liquid staking: It becomes possible to build staking delegation protocols like Lido or RocketPool that don't require trusted or bonded operators.

• restaking-free PoS: It becomes possible to design PoS where restaking is neutered.

• routing-free Lightning: One can design a version of the Lightning network without any of the routing and liquidity issues.

• proof of location: One can design proof-of-geographical-location which use network latencies to triangulate the position of an entity, without the possibility for that entity to cheat by having multiple copies of the private key.

(technical) How can one-shot signatures be used in consensus?

Going from one-shot signatures to removing slashing conditions and getting perfect finality is relatively easy. The key idea is to create append-only chains of one-shot signatures where every signature signs over the public key for the next one-shot signature. These signature chains can be made stateful, i.e. they can be assigned a state that must evolve according to a specific state transition function for the signatures to be valid.

To illustrate, imagine that every signature signs over a counter representing the epoch number, and that the state transition function requires the epoch number to be strictly increasing for the signature to be valid. By construction it's impossible to have a valid signature chain with the same epoch number, thereby preventing the possibility to equivocate by signing two messages with the same epoch number.

In order to prevent both double votes and surround votes it suffices for the signature chain to hold source and target counters in its state, and for the state transition function to enforce the following two conditions:

• previous_source <= current_source

• previous_target < current_target

https://www.reddit.com/r/ethereum/comments/14vpyb3/ama_we_are_ef_research_pt_10_12_july_2023/jrnyxa8/

Hell yeah ETH! Pamp it!

The same number of days has passed from the top of the 2017 bull run to the bottom of the Covid-2020 crash as compared to from the top of the 2021 bull run till today. Though if you consider the top is on November 2021, we still have about a few months away.

Why is this significant? Idk, if you're a believer of the 4 year cycles, then we may already be at the start of the next bull run

Is there something significant about the $1870 mark that's making us a stablecoin here?

Updoot the woodly!

When will kbin give us collectable avatars?

what's the lemmy/kbin equivalent of a reddit golden shower? I feel like we need one

For the record, we've topped $2K today. For that, we can thank... checks notes... XRP?

21 million ETH staked, with another 80k validators pending.

We are gonna reach 1 million validators pretty quickly at this rate

Grab that tumbleweed and put it back in the prop department! This town's big enough for all of us.

Here's a nice overview of different lemmy UIs: https://blog.erlend.sh/lemmy-frontend-alternatives-are-popping-off

There are plenty more, and I'm positiv that in a month or two we'll have really good looking apps. (e.g. Artemis)

Love you all so going to pass on eigenlayer alpha that will hurt my chance of getting in. If you don’t think their points system will eventuate into an airdrop, or are concerned about risks you should pass on this.

LST Staking cap raise is based on a timelock multisig, the one on the announcement channel is not it, the real one unlocks just over 36 hours from now.

Mods on discord seem pretty adamant it will go live very soon after the timelock and this would make sense as a whole bunch of people would get annoyed if it’s delayed to say Friday.

I’ll be staying up late to try, good luck beating the bots anons.

"NFT-Powered Dan Harmon Series 'Krapopolis' Finally Gets Premiere Date"

...a series of 10,420 NFTs that promised to offer some degree of show-related access to holders.

The collection has already generated 512 ETH, or over $957,726 at writing, in trading volume.

Krap Chicken NFT holders will be able to attend exclusive in-person events, vote on the show’s direction, and use eggs generated by their NFTs to purchase affiliated merchandise and digital goods—though details on those perks are still rather vague.

I've only ever been using ethereum on desktop but now I want it on my android phone.

What is the preferred wallet there, Rainbow?

I've stopped coming to kbin a while ago, and just came to check how well and alive you're all here. Honestly, I hoped for more traffic around. I'd like to find myself a social eth-centric group other than r/ethfinance, but damn, its hard.