Calle

“And the differentiating factor and the reason why we've been working on Numopay was because we wanted to see tap to pay in Bitcoin. We're all kind of jealous about the fiat payment experience with you tap your phone and the payment goes through instantly and takes maybe a second or two. And with Bitcoin, we kind of achieved good UX over the last couple of years, but we stagnated a little bit in terms of we all converge to QR codes and scanning, showing QR codes.”

“So that is a purely offline payment. Your customer's phone doesn't really, doesn't even need to be online for it. As long as there is some eCash in the phone, the eCash will travel directly from one phone to the other without even touching the internet. And that has a couple of very cool features or, you know, gives, first of all, it is instant.”

“So for this, we have built in the auto withdrawal with lightning address. And what this looks like is very simple. When you set up the wallet, you can go into the settings and you say, enable auto withdrawal, and then you can set a threshold, an amount threshold. For example, it could be 50,000 satoshis and enter a lightning address from your non-custodial lightning node or any other wallet that provides your lightning address.”

“But the biggest blocking factor for Bitcoin today, I think, is not kind of the existence of the tech. It's more the UX side and kind of convincing people to stay on board. And I've noticed or experienced this multiple times myself, that I go into a store, as you said, there's like, there's the Bitcoin enthusiast's owner of the store, who set up a POS device like months ago. And then as other workers join or, you know, another cashier works at the counter today, and they might not know how to use Bitcoin. And so on that day, you cannot pay with Bitcoin, but you have to come back when the owner is back in the store.”

“Another project that I'm thinking of is Portal, for example. Portal is a new Bitcoin inspired kind of a wallet and identity management app. And they're partnering also with a Bitcoin conference in this year where they are selling the tickets as Cashu tokens. So you will have kind of privacy preserving tickets for a conference, for a Bitcoin conference that cannot be double spent. So you can also sell them or give them to someone else. It's a big problem in the ticketing world is double spending, because when you go online and you buy a ticket, which is just a PDF file, for example, how do you know that the same ticket hasn't been sold to three other people?”

“So I believe that privacy needs to be a default, and you should not have to decide or research or figure out how to improve your privacy if you want everyone to use it. So we should be working on solutions where the user even doesn't need to care whether it's a private method or not. They should be just basically thrown into a privacy preserving system by default. And that's why also using privacy preserving systems must be as smooth as using any other system out there, because it just requires too much effort for most users to even climb over that hill.”

“But for most developers, and it's probably like above 95% of developers, AI agents today produce already better code than them. And they're not only producing better code, but they're also producing it 100 times faster than any developer can do. So if you're a developer, then you're already too late if you haven't adopted this, but you still have a chance. You still have a chance to save yourself, because the output efficiency that you gain from using these tools correctly is just mind-blowing.”

“And if you're a developer out there who is kind of looking for a purpose and figuring out what to do in the next couple of months, I urge you to consider joining the Bitcoin open-source development space. We are working as a very large group of people all around the world with strong purpose into a singular direction, which is pushing Bitcoin as a global monetary system on the Internet. Reconsider if your job is boring and you work in a stupid tech startup that you never supported, then just quit, start contributing to Bitcoin, look for grants, look for companies that can help you support that, and join us.”