Joined April 2026
I created a playbook to help you learn API design. • Core API fundamentals. • Clean & scalable design principles. • Popular patterns used in real-world systems. • Practical concepts for interviews & building projects. 24 HOURS ONLY! To get it for free: 1 Follow @systemdesignone [MUST] 2 Like & Retweet to get DM 3 Reply "Playbook" Then I'll DM you the details.
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This is what has kept us busy during the last few weeks!
Quiet on the timeline, busy on the bench: we ported all of Faraday to the ESP32-S3. New display driver, capacitive touch, new camera, new power path Same Rust core, same air gap, keys live only in RAM, radios never initialized. It boots. It signs!
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Hablemos de nuestros miembros que están construyendo cosas increíbles. Ep. 4 de esta serie con @_cxalem, co-fundador de @faradaysigner. Una compañia que te permite firmar transacciones de Solana sin conexión, completamente offline.
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We had @matija_sol cook up some tricky questions for other @superteam leads and got answers we're genuinely nervous to share. Hopefully not our last post...
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Playing with hardware for @faradaysigner !
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crypto finally built airplane mode for your keys. @faradaysigner joins the IKA Space to talk air-gapped signing, QR-only wallets, and why your private keys should never touch the internet. no wifi. no bluetooth. no nfc. you just scan. set reminder ↓
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the biggest threat to crypto isn't the blockchain, it's the moment you click "Approve." in February 2025, the crypto industry witnessed one of its biggest security disasters when approximately $1.5 billion was stolen from Bybit. what makes the incident particularly alarming is that the attackers didn't break Bitcoin's cryptography, crack Ethereum's security or somehow defeat blockchain technology. Instead, they exploited the transaction approval process itself, manipulating what signers saw and ultimately causing a legitimate transaction to authorize something entirely different. and the scary part is how most crypto users looked at the incident and thought: “That could never happen to me.” but that’s exactly the wrong conclusion because the biggest threat to your wallet isn’t always someone stealing your private keys. sometimes, it’s you signing the wrong transaction. @faradaysigner was built to solve exactly that by keeping private keys completely offline and transforming complex transactions into clear, human-readable instructions before signing. stay with me 🧵↡ #ColosseumReview
Solana @colosseum Frontier Hackathon product directory is live and Solana CTs are prepping their reviews. Don't just write for free - Review & Earn by joining SagaPad’s #ColosseumReview Race to win $1,000 USDC! You're also helping Colosseum projects you like get discovered on X and earn special perks. Quote tweet this announcement with your review, hashtag #ColosseumReview, tag project handles, & drop the links in SagaPad community to claim applause. We’re turning Colosseum project reviewing into a competitive sport: 🏆 $1,000 USDC prize pool 🏆 5 review tracks 🏆 For projects: Exclusive SagaPad builder perks for the top-reviewed and most-hyped Let’s dive in 🧵
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Thanks a lot to @LaFamilia_so for this, and for your continuous support on all the spanish projects!! Congratulations to my incredible colleagues at @faradaysigner, @nahem @_cxalem !!
Docenas de proyectos participaron en este pasado Frontier Hackathon por la oportunidad de ganar el sidetrack de LaFamilia. Recibimos propuestas de todo tipo, desde herramientas para creadores y DeFi hasta ideas completamente nuevas, resaltando el talento hispano. Después de revisar cada proyecto, estos fueron los ganadores:
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JaviDev retweeted
Wondering how an offline device signs online transactions? QR codes. No Bluetooth. No WiFi. No NFC. Build a tx in any Solana app. The extension shows a QR. Scan it with a Faraday cage! Review on the device screen. Approve. Get a signed QR. Scan it back.
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After a lot of hard work here we are!! Kudos to my team mates @nahem and @_cxalem !!
Our @colosseum submission is in We built an air-gapped Solana signer on a Pi Zero. No WiFi, no Bluetooth, no network. Keys never touch the internet. QR in, QR out! These have been incredible weeks of building!
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JaviDev retweeted
AI will autonomously find and exploit vulnerabilities in any piece of software that’s been written. And they’re getting better extremely fast. To be safe you need to be offline, there’s no other way!
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JaviDev retweeted
This is why you need a Faraday!
📅 Worst month for DeFi, 25 protocols hacked in past 30 days ($624,000,000 total) KelpDAO — $293,000,000 Drift — $285,000,000 Rhea Lend — $18,400,000 Grinex — $15,000,000 Volo Vault — $3,500,000 Hyperbridge — $2,500,000 BSC TMM/USDT — $1,665,000 Giddy — $1,300,000 Purrlend — $1,500,000 Aftermath Finance — $1,140,000 LML/USDT Staking — $950,000 Aethir — $423,000 Singularity Finance — $413,000 Dango — $410,000 Silo V2 — $392,000 ZetaChain — $300,000 Judao — $228,000 Scallop Lend — $150,000 Zerion Wallet — $100,000 Kipseli — $80,000 MONA — $60,950 SubQuery Network — $60,000 Juicebox V3 — $52,000 Thetanuts Finance — $50,000 Someone needs to stop this 🙏
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Welcome to the world, Faraday! Real builders ship hardware. This is exactly the kind of tangibility the space needs right now.
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JaviDev retweeted
Everyone, this is Faraday... Faraday, meet the world! @colosseum @LaFamilia_so @solana
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JaviDev retweeted
We are solving real-world problems on @solana Keep an eye open 👀 @LaFamilia_so
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JaviDev retweeted
Our friend at @Trezor discovered a Faraday Signer 👀
The takeaways from 🇪🇸 / Met @LaFamilia_so who are changing and building the WEB3 space across all Latin Sectors / Travelled 4 cities and partied, went out on a date with a Miss Venezuela Contestant / Seen my man @psykoin_, missed the dude, had some beers and smokes 10/10 will visit again and make sure something Web3ish happens 👀
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Cosas que nos traen a El Taller de @LaFamilia_so . Gracias @dogechocoes !
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