ViniciusCestarii

Vinteum Fellow | PGP: 0x82BF7385AF227906

[ViniciusCestarii @VCestarii]

@ozdeadman :) Glad to hear! Looking at the source code is the best way to learn what the docs don't say

[Casa21 @casavinteum]

Acontecendo AGORA!

Bitdevs São Paulo na Casa21, não perca nenhum evento, acompanhe e se inscreva em:

https://t.co/9wK31btNdI

[Isaque Franklin @IsaqueFranklin0]

I published a new blog post investigating the field element functions in the first secp256k1 commit.
https://t.co/xUz23BGVPZ

[Vinteum @Vinteum_org]

Our fellow Vinicius has been exploring Bitcoin Core internals and just published a deep dive on what happens from the moment a transaction message reaches a node to when it enters the mempool.

If you’ve ever wanted to better understand transaction relay, validation, and mempool acceptance in Bitcoin Core, this is a great read:

From TX message to mempool

[ViniciusCestarii @VCestarii]

I made a new blog post: what Bitcoin Core does when a peer sends a TX message tracing the full path from message to the mempool.

https://t.co/J94ahpbjOA

[Vinteum @Vinteum_org]

Mining decentralization is a big priority for us too. We’re funding @plebhash’s work on Stratum V2, @johnnyasantos’ work on P2Pool V2, and training fellows like @jayrmotta on Mujina and @VCestarii on IPC work that interfaces with mining projects. Looking forward to collaborating with Localhost in yet another area.

[b10c @0xB10C]

I measured block propagation and validation duration during the slow-to-validate blocks on Signet event last week.

https://t.co/XSO1JCSHCt

The median listening node saw a 160x slowdown in block validation speed. Validation durations for median node: 176ms -> 20s.

[Vinteum @Vinteum_org]

Monitoring the slow blocks demo with our Discord community

[Hiro | Bitcoisas @BitCoisas]

A verdadeira descentralização exige acessibilidade. 🌲⚙️

​Com o @getfloresta e o motor SwiftSync, rodar um Full Node de Bitcoin deixa de ser um privilégio de quem tem máquinas potentes.

​Isso é soberania. 🇧🇷

[Chaofan Shou @Fried_rice]

Claude code source code has been leaked via a map file in their npm registry!

Code: https://t.co/jBiMoOzt8G

[ViniciusCestarii @VCestarii]

@Vinteum_org Congrats @csgui!

[b10c @0xB10C]

We just had a rare-ish two block fork/reorg between Foundry and AntPool+ViaBTC. Foundry mined six blocks in a row.

https://t.co/qpj7eLlh0U

[Vinteum @Vinteum_org]

https://t.co/J1OzuwXGgI

[Vinteum @Vinteum_org]

Last week’s Bitcoin++ Exploits Edition in Floripa was packed. ⚡

Teams worked on fuzzing, monitoring, and bug hunting across open source Bitcoin projects.

To close the day, Vinteum hosted everyone for a karaoke night (classic @lucasdcf). 🎤🚀

[Mullvad.net @mullvadnet]

What do you do when you get banned on British TV?

[Vinteum @Vinteum_org]

First day of @btcplusplus Exploits Edition in Florianópolis.

Vinteum was proud to be the main sponsor of this deeply technical gathering, bringing developers together to explore historical bugs, attack surfaces, and ways to make Bitcoin more robust.

[Hiro | Bitcoisas @BitCoisas]

Açai with @0xB10C. What a night!!!

@gustingelin @diabocristao @VCestarii @iamflops

[ViniciusCestarii @VCestarii]

@jaoNoctus @Vinteum_org @narcelio The challenge was really cool!! It was a Proof-of-work for the brain

[jaonoctus @jaoNoctus]

As a Developer Advocate at @Vinteum_org, I help empower builders through education and practical learning experiences.

I'm deeply passionate about solving challenges. I'm inspired by the puzzles I've worked through, by the clever challenges I've seen @narcelio crack (specially the ones by Mica/Walltime), and by the ones @tidwell creates for @tabconf. Seeing how a well designed challenge can push people to think differently and explore deeper layers motivated me to create another one (the fourth I've designed) for the BDL 2025 cohort.

This one is rooted in LOTR elements: hidden messages, "precious" secrets, deceptive paths, and clues scattered like fragments of an ancient map. Participants must look beyond what is obvious, question what they see, and connect subtle hints embedded in the story and visuals.

They managed to solve it in less than 3 days!

Let's break it down 🧵👇

[Vinteum @Vinteum_org]

That was fun! We saw our residents going overnight trying to crack the cashu challenge (take a look @callebtc) or trying to sign a musig2 tx.

H/t to @jaonoctus for his brilliant challenge! @miketwenty1 are you proud of your padawan?