pepesza

24 ms·

1.
by pepesza 5y ago
Bitcoin the network is fully transparent, which makes BTC not really fungible - it can and is traced, which creates better/worse BTC. This is why coinbase (small c) BTC is sold at premium. Bitcoin should and will die, but in its place
2.
by pepesza 5y ago
Financial privacy is a must-have, not a nice-to-have feature. Financial privacy does not prevent one from being able to pay taxes. But it definitely prevents this type of attacks.
3.
by pepesza 5y ago
Telegram does not have any meaningful e2e encryption (apart from 1-1 on-demand stuff nobody uses). So yes, everything is visible to Telegram.
4.
by pepesza 5y ago
You are welcome! ZKSnarks are really mind-bending tech and are a lot of fun!
5.
by pepesza 5y ago
1) pepesza finds "42424242" <- that is the solution that needs to be hidden from the world 2) Signature = sign("42424242", privk_pepesza) 3) Witness = Circuit("42424242", Signature, pubk_pepesza). `Circuit`
6.
by pepesza 5y ago
The trick is to sign the secret, not the proof. And than to prove inside the circuit following claims: 1) secret (provided as a hidden input) is correct a solution to the puzzle 2) signature that signs the secret is correct (signature is pr
7.
by pepesza 5y ago
I think we are talking about three different scenarios. You are describing attribution problem. "Solution to the puzzle is no longer a secret, it is a public knowledge. Who was the original finder?". This problem is not really con
8.
by pepesza 5y ago
Why would it? Both signatures and snarks are non-interactive. And since you prove any(*) computation with a snark, you can prove that computation that verifies something (signature or snark proof) went well.
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by pepesza 5y ago
There are multiple ways of pulling this off. Signatures are zk-proof systems, just a very specialized ones. So you do it every time you sign a message. See my other comment on how it can be done.
10.
by pepesza 5y ago
> Does such a mechanism exist? Sign the puzzle solution with your private key. Check signature inside the circuit. This obviously can't be applied to this particular game since it has a circuit that does not employ such measures. Al
11.
by pepesza 6y ago
Think of Kessler syndrome. One can imagine that blowing (small) N of them would create a cloud of shrapnel posing danger for the whole network. Birds are on really low orbits, so it would clear after some time, but network might not survive
12.
by pepesza 6y ago
Coming from Erlang to Elixir - I find Elixir docs lacking in both coverage and terseness.
13.
by pepesza 7y ago
Don't give them any info. Write something along the lines of "transfer of money", always. Use separate channel to communicate "why". Every bit of information you give them will be used against you.
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by pepesza 7y ago
Technically unfeasible considering how much time he had to go through those docs (likely - very little).
15.
by pepesza 8y ago
> It's interesting how something which was built on the idea of decentralization by design has given way to a clear power structure, where those who have the sway to control the fate of the technology have largely used it to pursue
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by pepesza 8y ago
Monero, Zcash, Grin. Three designs that are based on different cryptography - all three giving user full privacy.
17.
by pepesza 8y ago
Visa is very expensive. How about that?
18.
by pepesza 8y ago
Not all cryptocurrencies add public record. Examples: ZCash, Grin.
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Using ZKSnarks to achieve 500tps on Ethereum(medium.com)
2 points by pepesza 8y ago|0 comments
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by pepesza 8y ago
They are doing beacon chain (a distributed unbiasable verifiable random number generator, constructed using commit-reveal scheme + VDF to fix commit-reveal biasability) to choose sets of validators for each of the shards. It is not your typ
21.
by pepesza 8y ago
Offtopic. DLT is basically a marketing fraud. Both "permissioned" and "permissionless" DLT are packed into one term. Problem is - they are vastly different. Permissioned DLT is not interesting at all from technical and s
22.
by pepesza 9y ago
Plasma is not for payments. It is a counterpart of Lightning Network, but for code. With LN you can do a lot of extremely cheap payments. With Plasma you can do the same for arbitrarily complicated code. Idea is - take some tokens to domain
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by pepesza 10y ago
You can do Proof of Authority instead of Proof of Work to cut down costs. The real reason behind techniques such as PoW instead of just Distributed Byzantine Fault Tolerance algorithms is scaling in terms of number of validators. Most of DB
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by pepesza 10y ago
Those will be addressed with Lighting Network [0]. ATM there are ~4 implementations of the concept. None is complete/mature yet. [0] - http://lightning.network/
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by pepesza 10y ago
Because encryption without authentication is prone to MITM attacks. WebTRC does not have auth layer.
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by pepesza 10y ago
> And BTW if you do the math a bicyclist (in the US, eating a typical US diet) emits more CO2 per mile than a small car. Assumptions: The bicyclist is riding in addition to any exercise, the riding is not exercise, and the bicyclist eats
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Flare – routing algorithm for Lightning Network (Bitcoin overlay network)(medium.com)
3 points by pepesza 10y ago|0 comments
28.
by pepesza 10y ago
Just FYI. Brujo is close to being expert in Erlang. This post is a more of a "warning for juniors" than "damn, today I've discovered something new". And there is nothing really WAT about it. Just part of rather simp
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by pepesza 10y ago
I think that not using Erlang in this particular case was a mistake. Erlang is running some of the largest chats out there, including League of Legends and WhatsApp. They would have avoided all the hassle of GC pauses, since Erlang has per-