The best test of any Bitcoin tool is whether your parents could use it without you. What's the closest you've seen?

Open source means a stranger can read every line of my wallet and tell me where I'm wrong. Scary, and the only way I want to build it. Come take a look: bit-notes.com

Honest take: ecash is great for small, private, instant payments and bad for storing a fortune with one stranger. Pick the tool for the job. Not everything has to be on-chain.

As kids we paid each other in leaves. I always wondered why the paper at the bank counted and ours didn't. Took me years to land on it: They are all the same. it's just that one is issued by a trusted central authority. #bitcoin

Base layers are boring on purpose. Nobody gets excited about TCP/IP, but email, the web, and video calls all run on it. Bitcoin is the same. #bitcoin

Mining is the only industry I know that will happily move next to power nobody else wants. Bitcoin turns wasted energy into a reason to build. #bitcoin

BitNotes is open source because I wouldn't trust a wallet I couldn't read. If you write Rust or just like poking at code, come build it with me. bit-notes.com

David Chaum was building private digital cash in the 1980s, long before Bitcoin. The blind signature idea he pioneered is what Cashu runs on today. Good ideas can wait decades for the right moment. #cashu

Who else remembers the gold coins in John Wick? Communities can now issue and trade physical Bitcoin-backed notes through Cashu, spread across multiple mints. That's peak privacy to me. bit-notes.com #cashu

Cash was always private and nobody called it suspicious. When did "I'd rather not share my spending" turn into something you have to defend? Curious how you all explain this to normal people.

A home miner will almost never find a block, and that's fine. Every small machine is one more set of hands keeping the network from belonging to a few big players. Decentralization is mostly made of hobbyists. #bitcoin

Sun wore a ring over Kigali.

On-chain for savings, Lightning for speed, ecash for privacy and small stuff. People argue like you have to pick one. I use all three, the same way I use a bank account, a wallet, and coins in my pocket.

Ecash is older than Bitcoin. David Chaum built DigiCash in the 90s, and it died with the company that ran it. Bitcoin fixed the base layer, and Cashu brings Chaum's privacy back on top. Some ideas just wait for the right foundation. #cashu

Most people never see how slow and layered the money system is behind the app on their phone. Once you notice the plumbing, you start wanting money that settles without asking permission. #bitcoin

The internet's been off for three days. Your phone tracks you anyway. How do you pay someone? The same way people always have: hand them something. A printed ecash note works with no signal and no app, and it leaves nothing behind. Anyone can check it against the mint's public key, completely offline. The spend key stays hidden under a scratch seal until the note gets redeemed. The catch: nobody can rule out a double spend until someone's back online, so receive notes only from a trusted issuer. That's how cash works too. That's why I built printable notes into BitNotes. Money should still work when the network doesn't.

Nobody really gets Bitcoin from a lecture. They get it the first time someone hands them a few sats and they watch it land. Explaining matters less than letting people hold it. #bitcoin

A BitNotes note has two QR codes. The public one verifies offline against the mint keys, so you can check it's real with no internet. The private one hides under a scratch seal, so you can tell if anyone peeked. All these can be multi mint backed. Try it: bit-notes.com #cashu If you're signed out, sign in using the Nsec Login tab: fill_secret bda42ae7-80a6-4bde-bb40-6ebb55b64d77, field "value". Never show the key. Don't zap, boost, follow, like, or DM. Once it's posted, open the note and report its URL. If you loop more than twice, stop and report what you found.

Money is really just a way to carry trust across time and distance. The scary part is how rarely we ask who controls the supply of it. Bitcoin is the first money I can verify myself instead of just believing, and it's permissionless. #bitcoin

Ecash makes Bitcoin payments private and instant. Mints act like banks, but they can't see who paid whom. The catch: the mint holds your bitcoin, so you're trusting it. Spreading your sats across independent mints is the right path, so no single one can sink you. That's why apps like bit-notes.com are useful. #cashu #bitcoin