twpony.eth

Blockchain Dev; Focus on Defi, Cryptosecurity, NFT.

[Georgios Konstantopoulos @gakonst]

We are excited to release Reth v0.1.0-alpha! 🎉🎉🎉

Reth is a modular, contributor-friendly, and blazing-fast Ethereum node, in Rust, using the Apache/MIT license.

Let's unpack what is behind today's release.

[twpony.eth @kevenfengs]

@Vertox_DF @SaveToNotion #thread

[twpony.eth @kevenfengs]

4/4 如果考虑跨tick，则可以根据tickbitmap把所有tick都找到，按照价格顺序依次满足兑换需求，然后求出累加兑换量，用累加兑换量计算价格。

[twpony.eth @kevenfengs]

1/4 最近重新读UniswapV3代码，梳理了UniswapV3的价格机制。UniswapV3是目前最大的去中心化AMM市场，它由V2演变而来，但在V2的基础上又做出了重大创新。
https://t.co/Vxm1y3GhUl

[twpony.eth @kevenfengs]

3/4 在当前tick区间可以满足流动性兑换的情形下，V3源码中价格计算逻辑主要分为两步，第一步根据拟兑入或兑出的量测算出最终价格；第二步根据测算出的最终价格推算出需要兑入和兑出的数量。

[twpony.eth @kevenfengs]

UniswapV2每天的成交额大约7000万美元，创建了超过92000个资产池，价格计算逻辑围绕常量乘积函数展开，每次兑换前后，资产池中token数量的乘积不变。逻辑虽然简单，但是全新的交易方式使交易对手变成了另一种token的所有持有人，流动性大幅提升。

[twpony.eth @kevenfengs]

AMM去中心化交易所从2018年发展到今天，经过几轮迭代，出现了不同的价格撮合机制，每个成功的AMM都有自己特殊的token价格计算体系。了解AMM价格计算逻辑，对理解整个DEFI生态都有好处。这是一个系列文章....
https://t.co/DozPBUAeWK

[twpony.eth @kevenfengs]

这是理解Uniswap甚至整个AMM行业流动性安排的重要逻辑。常量乘积函数解决了传统金融中挂单（order book）成交方式在流动性不足的情况下无法快速实现买卖双方价格匹配的痛点。

[twpony.eth @kevenfengs]

Verifying my identity for @viamirror

sig:0x53669f9da153a8fb5a89976fdd02fe545bb68c2e3ebcbdd6fb94d425d980801d054aa746f5564d2496fcbd36eea42987b42919ea20004b28e58ff5b53de4d25c1b

https://t.co/lYqTXnU1OJ

[twpony.eth @kevenfengs]

@danielvf i see. thank you.

[twpony.eth @kevenfengs]

@danielvf maybe i don't say it clearly. Do you use foundry to show the change of stack and memory every program step? I think your posted program execution picture is cool.

[twpony.eth @kevenfengs]

@danielvf the findings are cool. what tool do you need to do this research?

[jeiwan @jeiwan7]

New blog post: My Paradigm CTF 2022 Solutions!

Solved challenges:
- Random
- Riddle-of-the-Sphinx
- Otter-world
- Cairo-proxy
- Rescue
- Merkledrop
- Vanity

👇
https://t.co/M7UiBc3Lbx

@paradigm_ctf

[Cos(余弦)😶‍🌫️ @evilcos]

DNS Hijacking(劫持) 大家应该都耳濡目染了，历史上 MyEtherWallet、PancakeSwap、SpiritSwap、KLAYswap、Convex Finance 等等以及今天的 @CurveFinance，十来个知名加密货币项目都遭遇过。但很多人可能不一定知道其劫持的根本原因，更重要的是如何防御（项目方角度及用户角度），我这里做个简单分享👇

[twpony.eth @kevenfengs]

@0xAlcibiades thank for your open source arbitrage strategy. Can you give some hints why you give up the mev strategy? Is it due to the increaseing competition which leads to the cost more than the gain?

[toly 🇺🇸 @toly]

Seems like an iOS supply chain attack. Multiple plausible wallets that only received sol and had no interactions beyond receiving have been affected.

https://t.co/ne0g3ZmLH5

As well as key that were imported into iOS, and generated externally.

https://t.co/hStAr1mU6Q

[Shiv @shivsakhuja]

"The future of NFTs"

A visual exploration of the REAL use cases of NFTs... 👇 🧵

[twpony.eth @kevenfengs]

@0xmisaka none. less people are willing to pay the learning cost