Ich halte am 10. Oktober einen Workshops auf dem 3. BitcoinForum 2025 in Ingolstadt
Im Workshop werfen wir einen Live-Blick auf das Bitcoin-Netzwerk über die Webseite nostr:nprofile1qy28wumn8ghj7cnvv9ehgu3wvcmh5tnc09aqzrrhwden5te0vfexytnfduqzqwm285amxdvgx6ny68yq9y4edemf3mp45tju53gaa7nt6whna6uynewnpf und entdecken dabei, wie Transaktionen und die Blockchain funktioniert. Dabei bleibt viel Raum für spontane Fragen und offene Diskussionen – ganz im Sinne eines Ask Me Anything.
Gemeinsam erkunden wir spannende Blöcke und Transaktionen aus der Bitcoin-Geschichte – darunter die berühmte „Bitcoin Pizza“-Transaktion. Wir sehen uns die allererste Überweisung zwischen Satoshi Nakamoto und Hal Finney an, aber auch typische Bitcoin-Transaktionen.
Happy #Bitcoin whitepaper day ⚡️
(Picture if from the @LuganoPlanB
drone show)
Lugano after the Plan B conference. 😥
If the MacBook has not been restarted. So I still was on the same standby. I would think you are good.
For the future:
But best is to have it off when not in direct possession. I always power it off.
There are additional features like a firmware password you can set.
Ich war Gast im Sound Money Bitcoin Podcast:
Es gibt Einblicke in die technische Welt von Bitcoin. Wie wird "an Bitcoin" gearbeitet, wie werden Verbesserungen (BIPs) eingereicht und wer entscheid ob diese eingeführt werden?
Wir sprechen über die Blocksize Wars, Soft und Hard Forks und darüber wie "dezentral Entscheidungen" getroffen werden.
#nostriga nostr:npub1sg6plzptd64u62a878hep2kev88swjh3tw00gjsfl8f237lmu63q0uf63m nostr:npub1qny3tkh0acurzla8x3zy4nhrjz5zd8l9sy9jys09umwng00manysew95gx
#nostrriga
Cheers 
I will do a short presentation at the #37c3 tomorrow 2:30 pm at Stage H (near c-base)
Bitcoin Wallet Seed Security
https://events.ccc.de/congress/2023/hub/en/event/bitcoin-seed-security/
Hello from the 402 payment required assembly at the CCC Congress. 
I wanted to find out how hard it is to manipulate the @SeedSigner
. It was easy as expected. Never give it out of hand! Simple swap to a manipulated sd-card and it logs your seed to it. Later the attacker can collect the sd-card and get your seed words.
Total lines added to the code are six.
Needless to say, it writes the seed also to sd-card if you scan your backup seed.
There is a easy way to prevent this type of attack. Just remove the sd-card after booting the device.
I wanted to find out how hard it is to manipulate the @SeedSigner
. It was easy as expected. Never give it out of hand! Simple swap to a manipulated sd-card and it logs your seed to it. Later the attacker can collect the sd-card and get your seed words.
Total lines added to the code are six.
Needless to say, it writes the seed also to sd-card if you scan your backup seed.
The number is always changing. I once saw more then 1000.
The Mastodon instance http://bitcoinhackers.org got shut down. So I moved back to https://mastodon.social/@emzy "emzy@mastodon.social"
