Charles Guillemet
@P3b7_
CTO at @ledger. Busy securing the blockchain revolution. Cryptography, (Hw) Security, Tech, Blockchain. Previously built the Donjon (@DonjonLedger)
Privacy is a matter of freedom. ledger.com/blog/our-freed…
Who would've guessed? The $PUMP token from the top pump-and-dump platform is now just... dumping! ICO without lockup is rarely a good investment!
Why Won’t PUMP Stop Dumping? Bears Are in Complete Control: Analysis ► decrypt.co/331908/pumpfun…
Shipping starts today! Ledger Recovery Key is now included with every new purchase of a Ledger Stax or Ledger Flex! Need more than one Recovery key, you can order additional keys 👉 shop.ledger.com/pages/recovery…
🚨I'm excited to announce a huge technical milestone in @Ledger’s mission to simplify self-custody. Ledger Recovery Key—a PIN-protected physical card enabling storage & recovery of your 24 words with just a few taps. No KYC, no subscription fee, just peace of mind: 👇🧵
Ledger Recovery Key, our new private backup card to restore access to your assets, is now available! Self-custody should feel accessible. Ledger Recovery Key acts as the physical spare key to your assets so that you can restore access with ease and confidence. 🔐 PIN and…
🚷 The UK's newly enforced Online Safety Bill marks an Orwellian shift in the policy landscape of liberal democracies. 1️⃣ It mandates systematic filtering of content deemed harmful to minors, such as material promoting suicide, eating disorders, or self-harm. The intent is…
How on earth is it a good idea to dump 80,000 BTC on the spot market? Why not use an OTC deal or break it up into several smaller trades? The slippage alone cost over $200 million!
JUST IN: Galaxy Digital announced it executed one of the largest notional bitcoin transactions in history, selling over 80,000 bitcoin worth more than $9 billion 🤯
"This time is different" - 2025 edition. Time will tell.
#Bitcoin cycle theory is dead. My predictions were based on it—buy when whales accumulate, sell when retail joins. But that pattern no longer holds. Last cycle, whales sold to retail. This time, old whales sell to new long-term whales. Institutional adoption is bigger than we…
People sometimes say I don't get asked the tough questions, but I think @PatrickAlphaC covered them all!
Cyfrin 🤝 @Ledger 2 weeks ago, Cyfrin co-founder @PatrickAlphaC and @P3b7_, CTO of Ledger discussed: - Open-sourcing hardware wallets - Signature intent clarity - Hack history & wallet security If you missed the live session, catch the recording on YouTube. 👇
Cyfrin 🤝 @Ledger 2 weeks ago, Cyfrin co-founder @PatrickAlphaC and @P3b7_, CTO of Ledger discussed: - Open-sourcing hardware wallets - Signature intent clarity - Hack history & wallet security If you missed the live session, catch the recording on YouTube. 👇
It seems that WOOX was just hacked of ~$12M. Withdrawals are suspended atm... The history repeats again and again. Buy Bitcoin. Self-custody. Lower your time preference. Thank me later.
🚨ALERT🚨Our system has detected multiple suspicious transactions with an estimated loss of more than $12M involving @_WOO_X among $BTC, $ETH, $BNB, and $ARB networks. Suspicious address on $ETH received $1M $USDT from WOO’s hot wallet, with additional $ETH. The full $1M in…
1.4% use @Ledger Technology → Accounting for 20% of Capital! CTO @P3b7_ breaks down Ledger’s profound impact. Follow The Kus for more! ↖️❤️
Gradually, then all at once. Traditional finance is tokenizing all the things, making it faster, cheaper, interoperable, and composable. Blockchain technology is quickly becoming the backbone of global financial infrastructure. cnbc.com/2025/07/23/gol…
"Good luck proving it now"
Ramanujan said that he received his formulas from God
Securing Bitcoin: From Personal Sovereignty to Institutional Defense — Panel Moderated by @lukedewolf with @tsusanka @P3b7_ and @douglasbakkum ▶️ youtu.be/Q_BrteB6maE
If your company is still using SharePoint, it might be time to not just shut down the servers, but the entire IT department, turn off the lights, and call it a day "Researchers said anyone running an on-premises instance of SharePoint should assume their networks are breached."
SharePoint vulnerability with 9.8 severity rating is under exploit across the globe arstechnica.com/security/2025/…
Can @Ledger tell your secrets to the Government? → We asked CTO @P3b7_ for the Truth! It’s all about Security by Design… Follow The Kus for more! ↖️❤️
In December last year, we observed a capital rotation driven by short-term traders, creating waves where BTC pumped first, followed by ETH, and then altcoins and memecoins. I’m wondering if a similar scenario is unfolding now. Not an investment advice.
Yet another exchange rekt. Buy Bitcoin. Self-custody. Lower your time preference. Thank me later.
Hi everyone, At @CoinDCX, we have always believed in being transparent with our community, hence I am sharing this with you directly. Today, one of our internal operational accounts - used only for liquidity provisioning on a partner exchange - was compromised due to a…
Surprisingly, the world's tax champion, FRANCE, already works like this.
No capital gains tax on crypto to crypto transactions! Do not penalize people for participation in a new burgeoning industry you want to see thrive. Tax people when they convert back to USD. Tax them when they leave the casino. Incentivize them to stay in the game and help build…