Backup, recover, manage & transmit your wallet seed phrases - 100 % self-custody. No third parties. Own your crypto with total peace of mind.

Brussels, Belgium
Joined August 2024
Sead explainer by our CEO, Hugues Dorchy
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Creating new overlaping projects instead of teaming up with current ones makes the ecosystem unsustainable. More treasury withdrawals, less project quality overal. Zero retroactive funding for early deliveries. @MadOrkestra was right on this point. We should shift our culture to a more collaborative one, like other chains. Here we keep delivering a strong alternative for #Cardano, even working at late hours. Historically with little contribution.
🚀GameChanger Wallet v2.6.3 Released! Big cumulative update: shipped a broad mix of important UI/UX fixes, dependency security maintenance, new internal headless runner for testing, GCScript/ISL upgrades for better DevEx, transaction-builder fixes, and important UI polish: Burner wallet UX on non-supported browsers improved, history navigation for IOS/Mobile + desktop, half backend discovery loading time, alert dialog overflows fixed, QR wallet scanner error fixed, vertical layout improvements, and more! Huge shout out to Ratio for the great UI/UX testing and feedback! 2.5.8 Updated dependencies to clear recent NPM audit findings and fixed derived peer dependency issues. Deprecated legacy json-url transport by disabling runtime use while keeping definitions for compatibility. Removed unused and deprecated dependencies. Added a headless wallet class for tests and headless runners. Refactored build modes with better tree-shaking isolation for web wallet, Vitest, and web runner targets. 2.5.9 Fixed QR-to-QR transport accidentally triggering QR checkout. Fixed stake delegation UI crashes on multisig and remote-controlled addresses. Fixed Playground UI issues with multisig and remote addresses. Fixed IDE URL decoding for modern URLs with query strings. Fixed QR UDC scan using the wrong network. Fixed AddressPicker.js setShow runtime error. Disabled Milkomeda support across address picker and Smart Scan. Fixed double/transparent footer issues, especially on preprod and custom builds. Made the footer float above all content, keeping Network and NodeGroup pickers visible. 2.5.10 Added optional GCScript runtime syntax to purge transaction parts. Added delete support for outputs and mints objects. Extended ISL parser support for reserved keywords: null, undefined, true, and false. Added ISL functions: cmpBigNum, and, or, not, isType, and isEmptyString. Added eq and neq for strict primitive equality plus deep equality for arrays and objects. Added a Boolean operators code example. 2.5.11 Added noFail mode to submitTxs, allowing execution to continue after rejected transactions. Expanded submitTxs extras with status, error message, and detailed node JSON errors. Refactored resolved transaction extras and added txsExtended for a more isomorphic design. Added an example combining submitTxs, noFail, and extras. 2.5.12 Added the ISL assert() function. Added an assert() code example. Suppressed a noisy parser warning around missing {...} code blocks. 2.6.0 Automatically removes zero-quantity coin and token assets from transaction outputs during buildTx. Added definition docs for the zero-quantity cleanup behavior. Developers are now encouraged to leverage on assert() ISL function to clearly halt script execution on undesired quantities. 2.6.1 Restored support for negative mint values by filtering with BigInt after a 2.6.0 bug Improved first-time backend discovery UX with shorter timeouts, no GCFS retry stage, and progress reporting through onEvent() on update(). Improved /start flow by avoiding burner wallet creation when burners are disabled. Added a transparent navbar for back/forward navigation on full-size pages. Fixed QR scanner onError firing on load and interfering with wallet import/react hooks. Improved ImportExpressWallet error messages and cleaned QR scanner logging. Fixed the SweetAlert overflow/clipping bug. Improved cmpBigNum() error reporting. Added cmpBigNum() cases to the Boolean functions example. 2.6.2 Fixed a collateral coin selection edge case where more UTXOs than maxCollateralUTXOs could be selected. Improved full-page centering through SpecialPageWrapper. Removed the vertical responsive separator for WalletNavigator. 2.6.3 Continued vertical layout fixes for WalletNavigator.
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Sead retweeted
Our statement on the UK government’s demand that all content on all devices sold or used in the country be scanned, on the presumption of nudity, using a dystopian combination of age verification and content scanning. This proposal will not safeguard children. It endangers us all. signal.org/blog/pdfs/2026-06…
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🚨Unprotected seed phrases. March 2026. Three attacks. Five days. $29M gone. • March 1 → Bitrefill hacked by North Korea's Lazarus Group. 18,500 user seeds/keys records exposed. Wallets drained. • March 2 → South Korea's National Tax Service seized a crypto holder's Ledger wallets. Took a photo. With the seed phrases visible. Published it. $4.8M stolen in minutes. • March 5 → Sillytuna, a UK crypto trader, robbed at gunpoint. Axes over his hands. Kidnapping threats. $24M →gone. A hack. A photo. A weapon: three completely different methods. One identical outcome: someone's seed phrase was exposed, readable, or surrenderable and everything was lost. Physical violence against crypto holders surged 75% in 2025. Lazarus Group stole $2B alone. And a government agency couldn't even keep a photo private! 😱 But here's the stat that dwarfs all of this: $400B+ in Bitcoin is estimated lost forever. Not hacked. Not stolen. Just... lost. By people whose seed phrase backups were nonexistent or failed. !! Your seed phrase is the most valuable string of words you own. And right now, it's either: • On paper that can burn • In a drawer that can flood • In one location that can be raided • Readable by anyone who finds it What if it couldn't be read, photographed, or surrendered? Sead lets you protect & back up your seed phrases into multiple redundant QR code shares. No readable words. Distributed across locations. Even under duress, no single share unlocks anything. Your backup should survive what governments, hackers, and armed robbers couldn't beat. 🔗 sead.world
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⏰ "I'll set up a proper backup later." Later, when I have more crypto. Later, when I have more time. Later, when I understand it better. Later, when it really matters. Later never came. That's what everyone who lost crypto said. 💀 $140B in crypto lost forever. Every single owner planned to fix their backup "later." Later is the most expensive word in crypto.Your portfolio doesn't wait. The market doesn't wait. Disasters don't wait. Why is your backup waiting? Sead.world takes 10 minutes. Multiple independent QR codes. Set it up now. Stop saying later.
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You're paranoid about everything except your backup 🔐 You use 2FA, VPNs, cold wallets. But your seed phrase sits on paper in a drawer. You run a VPN. You bought a hardware wallet. You avoid sketchy links. You never share your screen. Security king. But your seed phrase? Paper. Drawer. One location. Zero redundancy. You built a fortress with one wide-open window. 💀 Most crypto isn't lost through hacks. It's lost through that drawer. All your paranoia means nothing if your backup fails. Sead.world closes the window. Multiple independent QR codes. No paper. No single point of failure. Security that matches your paranoia.
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🔒 Take a 10-minute Crypto security audit Right now. No excuses. Ask yourself these 5 questions: 1. Is your backup actually secure? A seed phrase on paper in a drawer isn't a backup. It's a liability. If fire, water, or a burglar can destroy it. It's not secure. 2. Do you have redundancy? One copy = one point of failure. Multiple copies = more leaks risks. If it's gone, your crypto is gone. Forever. No customer support. No "forgot password." Gone. 3. What happens if YOU can't access it? Hospitalized. Traveling. Incapacitated. If only your memory stands between your wallet and your funds — you have a problem. 4. Who gets your crypto when you're gone?Uncomfortable question but a necessary question. If you haven't planned inheritance, your assets die with you. 5. Could you recover everything in under 5 minutes? If the answer is no, your setup is too fragile for the amount of money you're protecting. — Most of you will fail at least 3 of these. That's why we built Sead: 🟠 Redundant QRs backup. Answers all risks. Recoverable. Inheritable. Scan. Full recovery. No seed phrase exposed. Ever. Start your real backup → sead.world
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🎯 You're the weakest link. You removed banks. You removed exchanges. You removed the middleman. Congrats. Now YOU are the single point of failure. Your memory. Your paper. Your drawer. Your one hiding spot. You became your own bank but forgot to build the vault, the backup systems, the disaster recovery, the redundancy that actual banks have. 💀 Banks don't lose $140B to "forgotten passwords." You do. Self-custody is freedom. But freedom without a system is just chaos waiting to happen. Sead gives you the infrastructure you skipped. Encrypted QR shares. Multiple locations. No single point of failure. You fired the middleman. Now do the job properly 👉Sead.world
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🎯 You understood blockchain before your banker did. You bought BTC when everyone said it was a scam. You held through bear markets that broke most people. You're smart. Nobody's arguing that. But your backup strategy? A piece of paper. One location. No test. No plan B. No inheritance setup. That's not smart. That's overconfident. ⚠️ 32% of crypto holders have lost access to a wallet. They weren't idiots either. They were smart people who assumed intelligence protects against bad systems. It doesn't. Being smart got you into crypto. A smart backup system keeps you in it. Sead gives you the perfect backup. Multiple QR codes. Nothing to memorize. No single point of failure. Resilience that doesn't depend on your brain. You were smart enough to get in. Be smart enough to stay in. Sead.world
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🚨 If you lose your crypto, it's your fault. Nobody else's. Not the market. Not hackers. Not your wallet provider. You. You wrote 24 words on paper and shoved it in a drawer. You "memorized" a PIN you'll forget in 6 months. You told yourself "I'll sort this out later." Later never comes. Until it's too late. 💀 $140B+ in crypto gone forever. Not stolen. Lost by their own owners. Nobody is coming to save you. No support team. No "forgot my password." No second chance. Stop being lazy with the one thing that protects everything you hold. ✅Sead turns your secrets into encrypted QR shares. Nothing to memorize. Nothing a single disaster can destroy. No excuses left. You were warned. 👉Sead.world
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❓ What's more likely to destroy your crypto: a hacker, or your own memory? You hold crypto. That means somewhere - in your head, on paper, in a drawer - you're storing a PIN, a password, a passphrase, 24 words to remember or hide. And you're silently betting that: • you won't forget where you put it • your paper won't burn, flood, or fade • your handwriting will still be legible in 10 years • you'll live long enough to use it You set it up once, hid it somewhere "safe," and moved on with your life. But you're betting your entire financial future on your memory and a single piece of paper surviving every possible disaster. ⚠️ 32% of crypto holders have already lost that bet. 💀 $140B+ sits in wallets nobody can open. ✅What if you didn't have to remember anything at all? Sead.world turns your secrets into QR code shares. Nothing to memorize. Nothing to hide in a drawer. No single point of failure. Your backup exists but your memory is free. Stop betting on your brain. Start building resilience!
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⚠️January 2026 crypto losses so far: 💀 $26M - Truebit hack 💀 $7M - Trust Wallet breach 💀 $107K+ - Mystery EVM drain (ongoing) 💀 Ledger - Customer data exposed AGAIN That's $33M+ in 28 days! But the biggest losses don't come from hacks. They come from people losing access to their own keys. The biggest threat to your crypto isn't hackers. It's you. Your REAL security? → A sticky note → A metal plate → A text file on your computer One fire. One flood. One forgetful moment. And your crypto is gone forever. The solution isn't trusting another company. It's decentralizing your backup so no single point of failure can destroy you. That's why we built Sead.world #Crypto #Bitcoin #SelfCustody #CryptoSecurity
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‼️Genuine question for hardware wallet users: You spent $150+ on a device marketed as "bank-grade security" Then you wrote your seed phrase on paper and put it in a drawer. How does that make any sense⁉️ Not trolling, I want to understand the logic
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🚨Are you one of those without a Sead backup ?
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Sead provides its B2B version for crypto wallets
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Sead Safe provides a secure, long-term digital vault designed to preserve your most sensitive information for decades. It ensures total decentralized privacy by distributing key shares among multiple redundant parties that you choose
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Sead AI-Coach 3.0 is a help feature for our users to bridge between the isolation of self-custody and the support of a centralized service, ensuring our users are "never left alone" when they wonder how best to hold and control their own crypto keys
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Having successfully generated your 2-of-3 QR codes backup, you have taken the critical step of eliminating a single point of failure for your crypto assets. Now, you must implement a decentralised storage strategy to ensure your backup is resilient against theft, fire, or loss. ℹ️Here is your step-by-step guide on what to do next
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⚠️Your seed phrase is the master key to your wallet, but a single piece of paper is a single point of failure. Whether you use a hardware wallet (like Ledger or Trezor) or a software wallet (like MetaMask), one fire, flood, or lost pin code could cost you everything. With over $140B in crypto lost forever due to missing backups, it’s time to upgrade your security. Enter Sead, the evolution of Seed phrase management: Instead of a vulnerable backup, transform your seed phrase into redundant mathematically independent QR codes. Why Sead QR Codes ? • No more password, passphrase nor pin code to remember • Redundancy: uses a "k-of-n" scheme (like 3-of-6). You can lose half your codes and still recover your wallet. • Decentralised Security: Store different codes in different locations (a safe, a bank, or a trusted person). No single code reveals your secret. • Universal Compatibility: Works with any 1 to 24 words phrase from any wallet. • Ultra-Secure: The Sead Tool is a zero-install, fully offline web page. No data ever touches the internet, and no trace is left behind. • Proven Peace of Mind: Powered by Shamir’s Secret Sharing Scheme, the same high-end cryptography used by governments and banks. Empower Your Digital Ownership today. Learn more at sead.world
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Happy new seed backup 2026
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Sead, the recovery layer for MPC ecosystems:
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