Replies (112)
LFG
One of crypto's big drawbacks is: what happens when the internet goes down? Does the economy just come to a screeching halt when it happens?
Bitchat is a Bluetooth mesh network that helps solve this problem. If the net goes down, people can still buy and sell crypto as usual, until the day the internet comes back up.
We need more apps similar to this. While it has been funded by Jack Dorsey, the former CEO of Twitter, it is open source on Github and in the public domain, and so far runs on Android. iOS, and macOS.
I hate to sound stupid but can someone please explain what cashu is? Is it like lightning payments? How is it different?
It’s like a coin in a country fair that is redeemable for bitcoin; you have to trust the fair operators not to rug you, but you get high privacy because there is no KYC
Cashu.space
Fuckin’ cool, great work! 🤘
👀
👀👀
It’s signed IoU vouchers
So cool! May be is a stupid question, how this would work if the receiver still needs internet to verify the funds? Does it make sense?
Bullish
👀
Dang man 🔥
Question.
How are you running bitch@ on Android?
I'd like to create one of those Nostr lists/packs to follow this group's work. Any suggestions on how to do that would be appreciated.
Playing with a friend both on android and we cannot see each other. Is that expected? Any settings I missed? And great work as always!!
The receiver needs internet for it to work.
you could extend this to meshtastic i guess
You're making history 👊⚡️
Based
Does anyone know when iOS will be out of beta/testflight? Still full.
This is it.
LFG
So if one has internet they will likely both have it.
If there is no cell service or internet this will not work at all?
I just went from 6 to midnight
I am very excited about that, but I can't see this being widely used unless it is embeded in Whatsapp or other mainstream app. Can Bitchat become the mainstream app?
If it's offline and off chain the apps can simply deduct everything strictly on the phones themselves in the wallets that you have stored on the phones within the app and then everything will sync up with the network once one or maybe both of the phones, but probably just one of the phones, it's the internet again.
Doesn’t look like it just….from looking at it….😬🤢😅
It's like lightning but worse
On chain Bitcoin also has no KYC, and still isn't as private as Monero
[Privacidad]
Me cago en la leche.
That is awesome.
😍
#privacy
How does this get reflected to the blockchain?
so a nfc card with nwc or an app or whatever could work anyways without bitchat hahahah
I believe the spender could double spend if they are malicious and get to the internet first
Game changer
i believe that’s when the spender becomes the double spender
Tricky bastard
Cypherpunk as fuck
View quoted note →It doesn't
It's chaumian ecash
Running atop Lightning (bitcoin L2)
Trade-off is trusting the mint/mints you use
Of course .. you can run your *own* mint too
I’m wondering how to update my app since I ported it from Xcode onto my phone.
Unless we’ll have to wait or manually update from Xcode
ว๊าว!! พัฒนากันเร็วมากมี cashu wallet ใน Bitchat ด้วย
#Siamstr
Of course, you only want to do this with people you kinda trust. Otherwise you'd want an internet connection to validate and re-mint the coins.
But that's how eCash works. Convenience + Privacy with increased trust/risk.
VERY COOL
Yet another way to get sats onto the
@npub1m3tu...m888 bitcoinize point of sale terminal.
Plus every small vendor can be an always-on a bitchat node.
I tried it in LA but looks like I was not around techies at that time 😉 It is a very promising app 👍
Yeah boi!!!!
I thought Bitchat was the first application to invent it. But for shure other apps could try to implement it too.
I ended up getting the source files and compile everything on XCode, Testflight will be full for a while
No choice, manual update it is
This is wild
Incredible freedom tech #bitchat
View quoted note →Btc symbol, not sats.
Haha yea that.
This is the new cache.
i was just having this idea, if the cache was propagated all over by BLE then with bloom filters I think it would lower the reliance on connectivity.
🥜 ⛓️💥🥜⛓️💥🥜⛓️💥🥜⛓️💥🥜⛓️💥🥜 🥜
we need the #goose with a brain
awesome
bullish af
sending bitcoin over bluetooth between bitchat android and iphone. both have a native cashu ecash wallet built in.
the ecash travels directly from phone to phone. the sender needs no internet. like instant and untraceable digital cash.
it's going to be insane. work in progress with
@thesimplekid ,
@npub1f742...rpa3,
@erik ,
@npub1ce7d...3d7m ,
@npub1dvdc...d4rm et al.
i see people bitch about LLM's being shit, that they can't code or think and all the standard cope of people resisting change but then you look around nostr and you see AI driven revolution in freedom tech, from ex big tech CEO's vibing new P2P apps to nostr apps being created by people who would never think they will create an app, let alone one that other people would use.
We're at the stage where big tech VC substituted gpu time gives us insane arbitrage in producing insane amount of new applications, explore the design space and try out ideas that would've taken months of someones free time.
We should use this opportunity to expand our frontiers, explore ideas that we otherwise wouldn't, bring as many people in, create nicer development ecosystems, make cool shit just because we can.
We must work towards creating value and businesses that will sustain this in the long run, enable us to build our own infrastructure and our ecosystem. Between cheap LLMs and grants in this space, with all the tooling that is being created we can outbuild the authoritarian world because we have the secret sauce -> we default to open collaboration, exchange of ideas and open source code.
WE CAN JUST DO THINGS.
View quoted note →🤯 👀
How safe is this method? If both are offline could there be double spending or has this been thought of. I guess when the recipient connects to the internet then a check will be done, but before that maybe the sender should be trusted.
Imo merchants will most likely always have internet, even in remote locations like a beach or a music festival. As a client, you could simply carry a card, ring, or even an NFC wristband and tap to pay then. Or using a phone and mobile device with Bluetooth, as in this case, might be interesting if you're abroad and don't have roaming. Additionally, it could potentially be even better for privacy in general, since no internet is involved at all in the transmission.
So cool! Permission-less payments peer2peer!
View quoted note →Do sender and receiver have to be using the same mint?
It's basically a vending machine. You send the mint Bitcoin, they give you ecash tokens.
Trading those tokens around is anonymous. There is no blockchain so the public can't see anything. There are no accounts so the mint doesn't know where the tokens came from. It can only know that the tokens are valid or not. Think of it like cash.
You can send and receive lightning payments, but you aren't directly interacting with the Lightning Network. The ecash mint is doing it on your behalf. But the user experience feels like you are doing it.
Remember that It's custodial (possible for a mint to rug it's users). Also the transaction level privacy is strong, but you still have to protect your network level privacy by using a VPN or Tor to hide your IP address from the mint.
Try it out:
Minibits.cash
Minibits.cash
Minibits is an e-cash wallet with a focus on performance and usability. Cash is issued by mints and backed by Bitcoin via the Cashu protocol and Li...
or
https://wallet.cashu.me/Figured. Will do that today
this is huge
hardly. so, you transfer a token, and then the mint is offline or your ISP blocks their IP. the end.
Ha!
exactly 🤙
Very cool and interesting, be good to get my head around it when I get a chance!
you can just bitchat things
A bit misleading when we say “sending bitcoin over Bluetooth” but I get the point.
Really cool build on the layers of bitcoin. We need to start translating this to the normies so adoption is easier. Cashu ~ usd paper note stored in your back pocket leather wallet. Leather wallets ~ digital device with usd paper (cashu).
Give one note to friend via Bluetooth on your digital device. When internet comes back, device syncs up with mint (kind of like you going to your bank and deposit dollars) mint takes care of layer 1 settlement (aka bitcoin)
This really is just like the 80’s & 90’s when we were building the OSI Model. We can almost say Bitcoin is the 8th layer!
https://bitsnbytes.space/2025/01/31/bitcoin-the-8th-layer-of-the-osi-model-the-trust-layer/
Really cool build. Looking forward to playing with it!
This is blowing my mind.
“Build the tools and the world you want”
How is double spending avoided while offline?
But they are saying one of the two in the transaction needs internet, if internet goes down not sure they can still pay one another.
you totally can still pay, just more trust involved which is probably fine for me of these use cases
🚨 FORT NAKAMOTO // LEVELING UP: BLUETOOTH BITCOIN OPS INITIATED 🚨
No internet? No problem.
This is spycraft for the sovereign era.
Imagine explaining to a normie:
“Yeah, I just beamed sats from my Android to your iPhone over Bluetooth while standing in line for tacos. No servers, no middlemen, no surveillance—just pure, raw freedom packets.”
At this point, Fort Nakamoto is considering issuing Bluetooth satchel charges to the troops.
This isn’t just peer-to-peer—it’s pocket-to-pocket, zap-to-zap, money-in-the-airwave madness.
Satoshi’s dream just got firmware upgraded.
Can’t wait to see this live.
#FortNakamoto #BluetoothBitcoin #CashuInYourPocket #OfflineFreedom #PeerToPeerToPleb
Good to know.
Can Bitchat also send messages if both parties are out of Bluetooth range but connected to internet?
Bitchat Github states:
"Store & Forward: Messages cached for offline peers and delivered when they reconnect"
What does that mean...."offline" & "reconnect" in tradional internet connectivity speak or Bluetooth offline & reconnect?
I also see that Location Services must be on for Android app to even let you past the first screen, pretty sure privacy people are not going to like this.
When the app first came out it was enough to just give app Location permission, now latest version wants phone Location enabled.
"the sender needs no internet".
The receiver will most likely has connectivity and check with the mint the validity of the received token.
You're welcome.
🫂
DZC
"the sender needs no internet".
The receiver will most likely has connectivity and check with the mint the validity of the received token.
You're welcome.
🫂
View quoted note →
I think that was a vibed artifact. But yes the idea is to make this feature where a bluetooth connected user could detect a new peer on the mesh and forward them messages they might have missed. I don’t think this is a reliable feature yet though.
on location services: gps isnt actually used in the app, but the bluetooth module needs it which is why you have to give that permission. Might be possible to not require it, but that’s a task for a #goose
POS anyone? Receiver is most likely online in this case
Cool
Não funcionou em motorola-g34, a barra para digitar fica abaixo dos botoes de controle do telefone. Favor levantar para melhor compatibilidade, no sansung funcionou normalmente pois a barra é diferente
@calle @jack
it does this already. messages are cached and forwarded on connect
Where can I get access to this?
===============================
#7 ⚡ Most Zapped Last Week
===============================
Nostr’s Value4Value (V4V) model is all about plebs directly rewarding creators for the value they receive, no middlemen fees, no ads, just pure community-driven support using sats via the Bitcoin Lightning Network.
Thanks to
ZAPLIFE.LOL
A decentralized Craigslist running on Nostr
by
@PABLOF7z for providing this data.
Here are the Top Zapped/Top Zappers from last week, showcasing creators who received/sent the most engagement:
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1. Name:
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Here are the Top Zapped from last week, showcasing notes that received the most engagement:
🔥 Top 3: Most Zapped
1.
View quoted note →
Zaps Received: 250
Sats Earned: 1k
2.
View quoted note →
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3.
View quoted note →
Zaps Received: 86
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🔥 Top 3: Most Sats
1.
View quoted note →
Sats Earned: 468k
Zaps Received: 10
2.
View quoted note →
Sats Earned: 86k
Zaps Received: 45
3.
View quoted note →
Sats Earned: 75k
Zaps Received: 7
#most-zapped_nostr_recap
Ok that sounds cool
I think I don’t get it. Then anyone can create a coin, that not necessarily has real stocks value?
cashu ecash is an IOU that you trust the mint operator to honor in the future
@The Daniel 🖖 we wanted to try this
Still do 🥹🫶🏻
I think we need a command line cheat sheet.
Pretty neat.
Agora eu consigo usar após sua atualização, Muito Obrigado.
Agora consigo usar após sua atualização , muito obrigado
Olá, por que quando deixamos os celulares parados um tempo sem conversa a conexão é perdida , só depois de fechar e abrir de novo volta a conectar ?
Não seria o caso de deixar algum loop, checando a conexão constantemente, pois o ideal pra mim é ,deixar ele aberto e ele simplesmente conectar a todas as pessoas próximas e manter essa conexão .
por que quando escolho alguém para falar no privado, as mensagem aparecem no chat público. não da para separar ? ao escolher alguém para falar fica privado só com esse contato.
pra mim está faltando uma lista de tutorial de comandos ? deveria ter algo no menu , enviar satoshi, configurar carteira, esse /send /saldo /como faço . algum menu acima seria bom
Obrigado por isso.
Yes!🙌
