Alekos Filini
@afilini
Followers
4,296
Following
559
Media
120
Statuses
2,074
@TwentyTwoHW , @bitcoindevkit , @h4ckbs
Italy
Joined January 2011
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Pinned Tweet
Many of you have been wondering what I've been up to for the past ~year... so here's a short thread about my journey launching
@TwentyTwoHW
👇🧵
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Hey ₿ Twitter!
I'm looking for a job in the Bitcoin world. I have experience with Bitcoin/Lightning/Liquid, (hardware) wallets, low level libraries, weird scripting. Previously at Blockstream where i was working mostly on the Green wallet.
DMs are open 📭
RTs appreciated 🙏🏻
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Pretty sure we will see something similar in a museum 50 years from now, talking about Bitcoin and all the shitcoins that died a bunch of years after their launch
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THIS IS PURE GOLD!
A payment processor which cannot keep up with bcash' blocks because they are too big.
"A 20mb block takes 10 minutes"
-
@ryanxcharles
,
@money_button
Yeah, let's scale on chain. What could go wrong? 🍿🍿🍿
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I'm really excited to announce that I'm joining
@Blockstream
as an Engineering Intern: a huge chance for me to grow in one of the best companies out there!
To the moon 🚀🚀
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Really excited to introduce
It's a very small (but growing) library of 3d printed gadgets and collectibles for bitcoiners. All the models are open source, so you can also print them at home or send a contribution with new designs.
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I'm really excited to announce , a PSBT viewer and editor that runs in the browser! 🧰🥳
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Wondering why Bitcoin had such a huge price spike today? 😏😏
I'm really excited to announce that I'm joining
@Blockstream
as an Engineering Intern: a huge chance for me to grow in one of the best companies out there!
To the moon 🚀🚀
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@TakeshiKovacs66
@MrHodl
@decredproject
Thanks but I'm more of a Bitcoin-only guy. Not really into 💩coins
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PSA: I'll be taking a bit of a break from my work on
@bitcoindevkit
. Finding it hard to work lately, I need some time to get back to my previous form.
Full explanation here:
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Everything is open-source: the firmware is completely written in Rust and based on
@bitcoindevkit
. This allows us to support singlesig, multisig and complex descriptors very easily (although some functionalities are not yet exposed to the end user).
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"many focused on building name recognition in hopes of securing additional funding"
Sounds familiar?
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I wrote a Rust client for
@BtcpayServer
, hopefully somebody will find it useful. Async-only at the moment but it can easily become blocking too.
Unfortunately I don't have time right now to write the docs and add more APIs, but contributions are welcome!
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Why yet another hardware wallet? Because we think none of the existing ones are both safe and easy to use with smartphones. So we've made our own.
Portal is built around NFC, not only to talk to a phone, but also to power itself! No cables, no batteries, just wireless magic
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Just scrolled through my LinkedIn feed for the first time in months: it seems like very few developers/researchers are posting stuff
There are mostly "evangelists", founders and C[A-Z]O talking about shit they probably don't even understand
It all feels so fake it's almost sad.
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Just overheard two girls cross-checking answers to a test they took: they were literally using the same exact words, it almost felt like they were singing together a very boring song
Daily reminder that school is just a mandatory waste of time, I'm glad I ran away from that shit
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I'm super honored to have been chosen for this grant! Thanks
@krakenfx
,
@jfnewbery
and the whole
@bitcoinbrink
board for making this a reality 💖
Now back to work! 🚀
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The hardware has been designed from scratch in Kicad, and it's also available on GitHub:
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A modified version
@bitcoindevkit
made this transaction! It's a Taproot script-spend with a 1-of-2 multisig that uses the new `OP_CHECKSIGADD` 🥕🥕
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You may have seen our announcement at
@BitcoinAtlantis
: our mission is to build hardware devices for bitcoiners, starting with a completely new mobile-native hardware wallet called "Portal"
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We are also releasing an SDK to help existing wallets integrate our device. We prefer to remain focused on the hardware, and let other teams develop awesome software on the smartphone side.
We have a few big names already starting the development 👀
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Even though I'm with
@giacomozucco
this time, I still like the fact that so many people are against
@TheB_Foundation
I think this kind of propension for decentralization is really necessary for Bitcoin. It will also help keep the foundation balanced IMHO
Don't trust, verify 🚀
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Every time your CTO mentions "blockchain" the best thing to do is spray them directly in the face with a spray bottle filled with room temp water.
This may startle them, but it does not hurt them and will curb the behavior.
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If you want to be the first to get your hands on a Portal you can pre-order it today at
We aim to start shipping the first batch of devices in the summer, Q3 at most
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I just realized that I reached 200 followers! Now that I'm famous I'm going to lunch my ICO and buy a lambo.
See ya
@giacomozucco
/s
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Here's a call to all the open hardware and Portal lovers: we are down in 12th place, only the top 8 will get to present in Prague 🥲
Go vote for
@TwentyTwo
if you wanna see us on stage!
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Me after painstakingly making a ECDSA signature by hand to send an illegal bitcoin transaction
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Before I start getting attacked by some wallets fanboys: the goal of the table was just to show that a part of a wallet's privacy depends on decisions made by its developers, and another part depends mainly on the type of wallet (single-sig vs weird multi-sig or custom scripts)
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THIS IS SO FUCKING ANNOYING
CAN'T WAIT FOR HIM TO LOG BACK IN LOL
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Lastly, here's the full presentation video. You should check it out because it's awesome
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We also spent a lot of effort simplifying the UX: there are no menus to navigate, as a user you are just shown each tx output and you can sign it by holding the button for a couple of seconds
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It looks like this is the first ever `OP_CHECKSIGADD` use on
#bitcoin
!
It's the third Taproot script-spend in the block, but the two coming in before didn't use that opcode.
A modified version
@bitcoindevkit
made this transaction! It's a Taproot script-spend with a 1-of-2 multisig that uses the new `OP_CHECKSIGADD` 🥕🥕
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.
@danielabrozzoni
and I are looking for a cheap room/apartment to rent somewhere in Sweden to escape the ridiculous Italian anti-covid laws. We were thinking at least for one month, potentially more if the situation doesn't get any better. If you can help our DMs are open 🙏🏻
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👀👀
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Also, a huge thanks to
@giacomozucco
and the whole
@BHBnetwork
team: it was great to work with you all, my first job will always have a special place in my heart ♥️
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A big release of
@bitcoindevkit
is coming soon and it's finally time to start writing "getting started" guides!
This article explains a few basic things you can do with the library: it's the first of a series that will dig deep into how to use BDK.
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@JWWeatherman_
@giacomozucco
This was my first prototype. STM32L476 Nucleo devboard + ST25DV hat + OLED display (needs a small mod, desolder one component on the back)
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So stealing the Bitcoin brand is fine, but when one single exchange just clarifies what chain their customers are losing money on, then it's not.
Welcome to /r/btc
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New blog post: Fuzz Your Mother If You Want Fuzz
TL;DR: How we used a fuzzer to find subtle bugs in
@bitcoindevkit
's coin selection. Hope you'll find it interesting!
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1/ My talk is actually not really going to be a "talk": I will live-code a c-lightning plugin, to show how easy & fast it is to make something cool with it
The idea is to make a little project to host auctions on Lightning. Without the help of a plugin, handling refunds when an
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I think it's time to reveal the plan for my talk at
#LightningHackdayMUC
⚡️!
Thanks
@fulmolightning
for the invite and your infinite patience with me 🙏🙏
Thread:
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21st century internet money explained by medieval developers!
A technical conference for non-technical people: get your ticket at
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People always look super confused when I tell them that I decided not to go to university, but I think that this sums up the reasons very well (translation following soon): the fact that you teach a uni course and know SHA doesn't mean that you can write about Bitcoin
@SimoMace
@BitcoinItaliana
Buongiorno. Conosco bene la famiglia di linguaggi di crittografia informatica su cui si fonda la Bitcoin (Secured Hash Algorithm) che insegno nel mio corso universitario. Il tema di questo articolo è la potenzialità di un registro decentralizzato e potenza computazionale annessa
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Pretty sure my Spotify account got hacked (yup, I was still using an old insecure password).
Now the question is: I want to have fun with this guy. Any ideas?
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For anyone who's coming to
@Paralelni_polis
#HCPP20
this weekend, I'll be giving a talk about miniscript, descriptors and multi-signature wallets on Oct 4th at 13:00!
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@CandleHater
@giacomozucco
@Blockstream
Native Tor support has been merged recently, with that you won't need Orbot anymore and it will also work on iOS!
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Just noticed on my Italian green pass that the name of the disease I recovered from is shown explicitly.
It looks like they've designed this whole infrastructure with reusability in mind, how long 'till the next pandemic? ⏳
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Don't have a time yet, but tomorrow ~afternoon we will do that live.
Auction on Lightning, all the money raised are going to be donated to
@torproject
and the winner gets a
@Blockstream
t-shirt 😎😎
More details coming soon in this thread
Tomorrow there is an interesting lightning game and funds are going to be donated to the winner of this poll.
#LightningHackdayMUC
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It took a long time but part two is finally published:
In this post I talk about Taproot signing, PSBT metadata and more!
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You guys are amazing!! Since this tweet we more than doubled our votes and we are now up to 4th place 😍
Now let's go fucking win this thing
Here's a call to all the open hardware and Portal lovers: we are down in 12th place, only the top 8 will get to present in Prague 🥲
Go vote for
@TwentyTwo
if you wanna see us on stage!
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Something really weird is happening on bcash now: bitcoin[dot]com has like ~28% of viabtc's hashrate, but it's consistently getting more blocks - like, many more blocks.
Are they hiding something? No way they are mining all of them with just 135 Ph/s as they say on their website
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.
@Rikki6ixx
sei una testa di cazzo: va bene non condividere le scelte di Valerio ma non c'è bisogno di andare così sul personale
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We just published two Docker images to help people hack on Portal: one contains the emulator (and a pre-built firmware), the other a complete dev environment.
If combined you can make changes, run tests and play with the emulator with zero extra deps!
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bcash SV completely removed the Qt GUI.. after all that's true Satoshi's vision, right?
I guess they will also drop Linux support sooner or later 😂😂😂
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A very simple way to make time-decaying multi-sigs using bdk-cli.
Really shows how powerful descriptors can be! 😎😎
Just published a new post with
@thunderB__
on how to use the
@bitcoindevkit
to create and spend from a descriptor based
#Bitcoin
wallet using two different spending policies. Check it out!
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If you are a `libtor` user, the newly released v44.5.2 is a pretty big upgrade: full support for Linux, macOS, Android, iOS and Windows (cross-compiled with MinGW) plus the option to include lzma and zstd alongside zlib!
Check it out at
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If you maintain a mobile wallet app and you'd like to try out my latest creation please DM me! 📨
Can't share much right now, but it will be announced publicly at some point👀
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PSA: I haven't booked yet but I'm thinking about coming to Austin on Apr 16th - Apr 21st. If anybody wants to hack on a
@TwentyTwoHW
Portal hit me up!
cc:
@PlebLab
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Go get yours ASAP. The more you wait, the less you'll regret it
NEVER SPEND YOUR SATS - unless it's on , in which case, go for it and then regret it
@tulipan81
@afilini
@RCasatta
⚡
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Nobody:
My brain: you should make a website with a dynamic 3d object as background. Don't use a pre-recorded video, it looks better if you draw it in real-time. Maybe using WASM, so that it's faster. Oh, and also write it in Rust, it's safer. Don't forget proper lighting. Thx.
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The cool thing about Italy is that sometimes you just go out to have a random walk and you find yourself in awe of a place you've already seen probably hundreds of times.
Doesn't matter, it's still beautiful.
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I'm setting up a little machine to host a Bitcoin full node + ln. Which OS would you recommend and why?
Please RT if you are interested too, I would like to get as many responses as possible!
Ubuntu Server
416
Fedora Server
41
FreeBSD
58
Other
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A little sneak peek of my submission for the
@bitcoin2020conf
virtual hackathon:
@MagicalBitcoin
in action, importing a weird descriptor with a key and a timelock, showing its balance and spending from it 🧙🏻♂️🚀
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Wanna know how I did this transaction? Here's a writeup for you!
In this first part I talk about the changes I made to rust-bitcoin and rust-miniscript, in the next one I'll focus on
@bitcoindevkit
itself
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Dopo il
@bitcareforum24
ecco un'altra scusa per venire a trovarci a Brescia: giovedì prossimo presentiamo Portal al pitch contest di Brescia Startup!
Saremo l'unico progetto Bitcoin, venite a fare il tifo per noi 📣
Registrati qui:
On May 30th we'll be presenting Portal at a local pitch contest in Brescia, Italy 🇮🇹
If you happen to be in the area come cheer for us! 📣
Register for free at:
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First BDK release on is out!! 🎉🥳
Check out the release post for a quick intro to the new features in this release ⬇️⬇️
We are very excited to announce the v0.2.0 release of the main BDK Rust library, featuring a LOT of new features and improvements!
Check out the highlights in our blog post:
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BIP-342 defines OP_CHECKSIGADD as a replacement for OP_CHECKMULTISIG. In the footnote it's mentioned that OP_CHECKMULTISIG is not compatible with batch verification, but I can't understand why and I can't find any answers online. Are there any good resources that I can read?
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#bitcoin
twitter, we need your help:
@giacomozucco
and I were talking today about Lightning, and more specifically BOLT-8 that defines the encrypted/authenticated layer. We came to the conclusion that the same thing could be achieved simply by using onion addresses, with the ...
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@giacomozucco
If you think about it, it's actually the best way to detain someone if you want to get rid of him: other crimes would require some pretty strong evidences to back your claims. Why bother when you can just accuse him of sexual assault?
Added bonus: ruined reputation
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I finally have a page on my website where you can schedule an online or in-person meeting with me: you can book 1h or 2h slots and ask for help with anything you need!
More info:
I'll be available for consulting/contracting gigs in the meantime, DM me if interested!
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In case you needed something to do this weekend: the online playground for
@MagicalBitcoin
is now live. It's pretty much a fully working testnet web wallet built on miniscript and descriptors. Go give it a shot! 🧙🏻♂️
Announcing , the official documentation of the Magical Bitcoin project!
Right now it's focused around the debug CLI, with step-by-step instructions. And if you don't want to compile it yourself, check out the playground here:
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> Valentine's day, restaurants fully booked
> Me: every couple should have their own Valentine's day computed as the hash of their name and birth date
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@sashandiggers
@grkstyla
@bitPico
@rogerkver
@JihanWu
No, you have no idea: he is not talking about blocks, he posted the list of nodes.
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250 following, 500 followers. This looks so oddly satisfying 😍😍
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Hey
@Viminale
&
@IPZS
, cosa ne dite informarvi e imparare a cosa serve (e quando usare) HTTPS? Mandare il mio numero di
#CIE
su significa esporre l'unico campo segreto dell'autenticazione MRTD che protegge il chip!
cc:
@teamdigitaleIT
@developersITA
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This might be the first time I write about
@bitcoindevkit
without getting myself deep into the technical details..
If you are interested in
#bitcoin
wallets and output
#descriptors
go check this out! ⬇️⬇️
Read about Brink grantee
@afilini
's work on
@bitcoindevkit
. Thank you to
@krakenfx
for providing funding to make this grant possible!
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