pull down to refresh
Thank you so much! Would absolutely love your feedback on the minting process once you get them in! I've been really the only person to test them as I don't have many "Bitcoin friends" IRL who are savvy enough to really care about this stuff. it would be cool to get feedback on how the experience was for you and if there are UX improvements I can roll out to make it easier. I'd recommend using the electrum wallet android app when minting as it easily gives the private key & the corresponding address.
Regarding the art on the tokens, I thought that was another cool bonus as well. I already had a photo printer & a cheap die cutter at home with sticker paper so these were easy to make for me but making a small run of stickers is also pretty cheap. I literally just colored the tokens with a black sharpie then pasted the sticker on to give it the all black look.
While coding everything up, I had a vision that people would make small "community mints" of sorts. One of the features of the NTAG 424's is that they basically have "immutable" serial numbers that are extremely hard to copy & produce unique results per tap that only the original tag can produce, kind of like a zkproof. So unless you're like a state actor or have extremely advanced lab equipment, it's basically impractical to exploit especially for a $1-$250 tag.
The tags also have server-database authentication/communication features so you can easily build an authentication system on top of the base app. Only reason I haven't coded that up is because the initial idea was to make "sneaker net coins" - ie, offline coins. (The app doesn't need Internet to work, just needs Internet to display the balance of the token)
I am also a bit more "privacy minded" and feel somewhat hesitant to basically implement a "coin tracking" system of sorts 😅. But if people like the idea it would be cool to have some sort of node or federation software that detects duplicates and stuff like that. (Would obviously require an internet connection though)
I will let you know as soon as the iOS app is ready. I will probably want to get the features like click to sweep and generate private/public key pairs implemented before I work on the port.
I've minted even less lol. With the sub 1 sat v/B transactions, these actually make more sense now. You can even play "Bitcoin bearer token" poker with them.
The app solves for that in a way if you'd like it to.There
are different "token modes"
One of them is called a "stealth token". So when minting, you put a password on the tag & basically make the NFC tag look like a generic NFC tag (ie a Door key tag, employee ID tag, or enter your own data/message) to any generic NFC reader apps like NFC tools.
But if you scan the tag with my app & enter the same password, you will reveal the "true identity" of the tag as a password protected Bitcoin bearer token tag.
As I mentioned in another comment, in the future we can also probably pretty easily implement a "sweep" function within the app so users don't need to download additional software & also implement private key generation features as well. In the current build you need to bring your own private key + address key pairs.
Mainly just wanted to build a working prototype then start collecting feedback.
A part of the reason I've been hesitant on shipping any key/wallet generation features is because as stated in the readme, I'm not really "a dev". So I'd prefer to leave that part to the reputable apps. In time though, if the idea is embraced by the community then I can definitely see it being included.
If it really is "big problem" then I'm sure in a V2 of the app, we can easily code up a "sweep" function that sweeps & sends to your desired address in a click or two.
For the v1, I just wanted to make a "minimum viable product" and get the conversation going, get feedback from bitcoiners who know their way around the block.
IMO one of the cool things about the "physical Bitcoin" stuff is that you don't have to sweep it.
You can just spend by giving it to someone else. Especially if it's a $1-$20 token. The important thing is having the ability to sweep.
Additionally, if your concern is what app people use to sweep, you can include your own message on the token when minting so you can just put a link to your favorite wallet or sweep guide.
I can definitely make a video on how to sweep but right now, but everything is very early stages and it's been hard enough to get regular bitcoin users to not immediately dismiss the project.
That was a partial motivation of making this app. One time I gifted someone an opendime and they lost it.
While I don't recommend backing up private keys for "true bearer tokens", you technically can and have the ability to. That way if someone loses the tag you can assist them with recovery. That's also why I call it a "semi-trusted" system.
They download the app.
They tap the tag to the back of their phone to see if the tag has ever been "revealed" or not. If the tag is "unrevealed" they can follow prompts to "reveal" the private key. Then they can either pop the private key into blue wallet, electrum mobile wallet or any other wallet that lets you import/sweep/spend WIF private keys.
I have a section where i sell cheap tees for only 20k sats w/ free domestic shipping. I don't get too many orders but it's there.
the entire store is priced in Bitcoin and always will be. Uses lightning, built on WordPress and uses the BTC pay server plug in. works like a dream thanks to zero fee routing.
The offline cash stuff looks pretty cool, I wonder if they're using the same NFC tags or something different. It does seem pretty complicated though with the multisig stuff
My x handle is @justh0dl and is probably the most reliable way for a quick chat.
I do have nostr but I barely check it. If you'd like email works as well: j@10msats.net