I think I just unlocked open source tap-to-pay with ecash

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Nuttish!!!

Good this is what we need

This is the limiting factor holding us back now

Need a card which we can tap-to-pay, and easily tap-to-reload

& a PWA (or app but PWA better) to show balance and again, insanely easy to reload

Don't you need to run a coin selection algo on the card. Is this possible with current hardware?

I think tap to pay from your phone is probably more achievable.

Coin/ecash control would be dope

That'd be on the software side (app) imo

If you want to pay with a card and not an app you need to load some ecash onto the card. We can do this today.

Ecash is a bearer instrument so if you don't want to spend your entire balance you need a way for the card to only unload some of its ecash but not the rest.

You don't give the cashier the entire contents of your wallet when you go to the register. Same thing.

I think you need a processor on the card capable of running an algorithm. I don't know whether this is possible today.

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YUGE!!

How resilient is it?

You are a machine sir ๐Ÿฆพ

nostr:nprofile1qqsgukm5rcalmc8s30dwnrtrxrsgkt9kwtkfsl8gjnxuan94lt5xx8gp94mhxue69uhkcmnyd9ekxuewv36kx6mydeejummjvuhkummnw3e8yetvv9uj76jkv4n9z7r0tgq3samnwvaz7tmjv4kxz7fwwpkx2cnnw3ezucm0d5hsxdlfqp ๐Ÿ‘€

I just saw that. I fucking love cashu and nostr:nprofile1qqs9pk20ctv9srrg9vr354p03v0rrgsqkpggh2u45va77zz4mu5p6ccpzemhxue69uhk2er9dchxummnw3ezumrpdejz7qgkwaehxw309a5xjum59ehx7um5wghxcctwvshszrnhwden5te0dehhxtnvdakz7qrxnfk

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Silly goose!

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Itโ€™s incredible ๐Ÿ˜๐Ÿ˜ calle ๐ŸคŸ

I am very excited for this. I believe the settlement time for this transaction could be very low.

1: NFC to move ecash tokens to merchant device

2a: if merchant trust mint, reissue ecash to themselves.

2b: if merchant does not trust mint, sweep with lightning to themselves.

The case for 2b is a little more complicated because the sweep would incur fees that the merchant may want to charge the customer for.

Overall though this seems like a super good payments flow, I love it!

Pretty normal to charge a small surcharge to cover possible fees.

2a will also incur fees

Sweet

How ?

Deez nuts, amirite?

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No way ?!?! ๐Ÿ’ฅ๐Ÿ’ฅ๐Ÿ’ฅ

And we were here to witness this day.

Incredible. With a pwa?

Where is this source..? Iโ€™d love to play with this!!

That's nuts

โ€œRelease the Krakenโ€