Vasilis Papaioannou ⚡️ tweetious ₿

Stacking sats and opening card packs! @BTCProofofPlay @HeroOfBitcoin @CryptoCloaks @Stackchainmag

RT @elraulito: The solution against hardware wallet attacks is not a new hardware wallet Let me introduce: OFF WALLET Managed to - Generated a new BIP39 wallet - Received BTC on the Game boy - Sent them over to a different address - Signed the tx with the Game boy - No internet connection required - No connection with a PC was used - Signed tx was exported with the display itself No new hardware, most of you already have it at home, no supply chain compromised. Just cryptography and sepk256k1 on a 8 bit CPU. Making self custody great again.

> (4) DIY hardware is not a panacea. How soon until Amazon sellers are modifying Raspberry Pi's and other dev boards, hoping that someone uses it for Bitcoin or crypto storage? Generic hardware is an _enormous_ improvement over hardware wallets, because an attacker needs to backdoor _far_ more units to attack a niche use case. Maybe 1-in-100 laptops or Raspberry Pi's will ever store crypto currency on them. 95-in-100 Ledgers will.

RT @0xSesour: The Genesis Period in Digital Philately – The First Private Bitcoin #CryptoStamp (2017) ✉️✉️👀   Before official national postal issues appeared, private pioneers were already creating some of the earliest known crypto stamps 💥   On 26 July 2017, according to available accounts, envelopes containing a Bitcoin-loaded wallet were mailed. One early pioneer was Krogoth Manhattan. The envelope carried a public QR code and a private QR code with BIP32-style addresses, preloaded with 0.02 BTC. This is regarded as likely the first private, unofficial cryptographic stamp sent by post.   Two days later, on 28 July 2017, a custom stamp was printed on an envelope and loaded with 0.005 BTC. Copies of the stamp’s public and private keys and password were sealed inside. The stamp showed both a public and a private BIP32-style address and was mailed with a preloaded wallet - the first (probably) known private Physical Bitcoin #Stamp used through the postal system.   Thanks for the inspiration to fellow cryptophilately collector  @tweetious 🤝   More details are available in the book 🌏(September English edition 📘📙🦄👀):   #CryptoStamp #DigitalStamp #Cryptophilately #DigitalPhilately #FirstPrivateCryptoStamp #CryptophilatelyGenesisPeriod #Web3 #InTheWeb3Era #AroundTheWorld @pzkfpl @filatelistyka @tweetious @lctl92

The English-language edition of the “Digital Philately and Cryptophilately” book has been released! 🥳 I’m really glad that I managed to acquire the limited Gold & Rainbow Collector’s Editions! Thank you @0xSesour ! 🙏

Just got on the wall next to @ch_hoffmeister. Panel 21 — NFC Summit 2027.

RT @filatelistyka: 📮 CYFROWA EDYCJA EMISJI „ZWIERZĘTA DOMOWE” 🐾 Już 30 czerwca 2026 r. do obiegu trafi nowa emisja znaczków pocztowych „Zwierzęta domowe”. Z tej okazji przygotowaliśmy jej cyfrową odsłonę w serii „Cyfrowe wydania znaczków Poczty Polskiej”. Do zdobycia są numerowane cyfrowe walory kolekcjonerskie (NFT) przedstawiające bohaterów emisji: 🐱 Kot Maine Coon - 120 szt. 🐰 Królik miniaturowy - 120 szt. 🐦 Kanarek czerwony - 120 szt. 🐠 Paletka dyskowiec - 120 szt. Jak wziąć udział? ✅ Zaobserwuj profil @filatelistyka. ✅ Polub ten wpis i podaj go dalej (RT). ✅ Opublikuj w komentarzu zdjęcie swojego zwierzęcia domowego. ✅ Dołącz do serwera Discord „Znaczki & Kryptoznaczki”: i opublikuj na kanale "skrzynka-konkursowa" zdjęcie swojego pupila oraz link do komentarza zamieszczonego pod tym wpisem. 📅 Na zgłoszenia czekamy do 7 lipca 2026 r., godz. 23:59. ℹ️ Część cyfrowych walorów kolekcjonerskich zostanie przydzielona w pakietach, a część pojedynczo. Szczegóły znajdziecie w Zasadach Akcji na serwerze Discord „Znaczki & Kryptoznaczki”. 📮 Pochwalcie się swoimi zwierzakami! Nie możemy się doczekać Waszych zdjęć! 🐾 Powodzenia! ❤️ #Filatelistyka #CyfroweZnaczki #NFT #ZwierzętaDomowe #Kryptoznaczek #CryptoStamp #DigitalStamp

RT @0xSesour: It's great news that this book 📕has already found its way to you @tweetious Every collector of digital philately and cryptophilately should own it. It's recommended to every philatelist. I also recommend it 📕to every investor in digital assets! It's worth educating yourself, it's worth having a book nearby that helps develop your passions and hobbies 🌏 Thank you for your words Vasilis @tweetious 🇬🇷🏛️ As far as I know, the author is working on another language version... 😎

This is a must-have book for every crypto stamp collector and digital philately enthusiast! Thank you @0xSesour, for providing me with such a useful book, which will serve as the main reference point for my crypto stamp collection.

This is the world's first book dedicated to digital philately. It includes a comprehensive catalogue illustrating all digital/crypto stamps released to date (222 issues from 34 countries, featuring illustrations, technical descriptions, and edition tables). @0xSesour

RT @blu3baer: Got myself a original Batzu in Prague @AntoniBatzu love it 🧡

It was a great pleasure chatting with @AntoniBatzu at the @BTCPrague conference. Your craftsmanship is amazing, and I’m really glad to have added one of your pieces to my collection! I hope we’ll see each other again in the future.

A great addition to my Tangem collection! Thank you @aigarxyz , it was nice seeing you at the @Tangem booth during the @BTCPrague conference!

RT @jednadvacetorg: DOKÁZALI JSME TO! 🎉 Cíl 1 BTC je vybrán. Satoshiho socha v Praze už není sen, je to realita, kterou jste postavili vy. Přes 1 600 lidí, sat po satu, bez státu a bez korporací. Tohle je síla komunity. 🙏 Obrovské díky každému, kdo přispěl nebo sdílel. 🧡 A důležité — tímto to nekončí! Vybíráme dál až do 1,3 BTC. Přebytek pokryje dopravu, clo, DPH, instalaci a péči o monument, ať je celý projekt komunitní. Přispívat a zapsat se můžete dál. ⚡ Všechno je transparentní: každý příspěvek je evidovaný, stav sbírky je veřejně viditelný v reálném čase. 🔍 📋 Celá pravidla sbírky: Přispět:

I just contributed to the statue of Satoshi Nakamoto in Prague. Join in and be part of history! 🟠⚡

It's always a pleasure to support Bitcoin-only initiatives and help strengthen the circular economy! I am also really glad and happy that I finally got my hands on one of those gorgeous leather-bound books made by @TheLeatherMint ! 🙂📙

@BTCprague Art gallery auctions are closing out over the next few hours. Congrats to @tweetious and @cubanjulioneira on winning these gorgeous copies of The Bitcoin Standard by Safidean and bound by master leathersmith @TheLeatherMint

LFG BACK TO THE BUSH @Khamusique @trmarkets2022 @decentraland @HELLVETYA