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OrangeSurf
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Replying to Avatar calle

Tap-to-pay with CashuBTC ecash — for bitcoin.

Fiat credit cards nailed the UX: fast, offline, works anywhere.

I always wanted that for Bitcoin.

Now it’s open-source. Private. Instant. Beep, done.

In the video: two Cashu wallets for bitcoin.

Left: nostr:nprofile1qy2hwumn8ghj7etyv4hzumn0wd68ytnvv9hxgqg4waehxw309aex2mrp0yhxgctdw4eju6t09uqzpveml85hk78n2622qtnthmuwwuzexuly9v9gtf3lykjsa076magdkt6tav (PoS)

Right: cashu.me (payer)

Ecash is sent directly via NFC — no internet, no delay. Beep, boop.

Ecash is a bearer token — the money lives on your device, not on a server. That’s why it pairs so well with NFC. Pick an amount, tap to send. No talking to servers. No syncing. Just push it over. The payment is pretty much instant. A PoS can accept ecash from any mint and receive payments via Lightning.

Still early days, but we’re experimenting. Card-to-phone works, but phone-to-phone? That’s the real killer use case.

Apple famously locks down the iPhone’s NFC chip — good monopolist.

F*k that. I found a workaround.

As long as one phone (ideally the PoS) is Android, you can send data both ways between iPhone and Android.

(You don’t really own your iPhone.)

Peace!

https://m.primal.net/PnpP.mp4

is there any significance to the fact that in one direction there was no fee, but in the other direction there was a fee?

Tooling to take advantage of low cost blockspace.

I want my mobile wallet to alert me of abnormally cheap blockspace and (semi)automate the generation of utxo management transactions.

👀 what if Bitkey used FROST to be compatible with other hardware wallets, while preserving the great recovery functionality

https://orange.surf/bitkey-notes/

Imagine this in the distant future. You buy a new bitcoin signing device which is open source (hardware & software). You stop by nostr:nprofile1qyxhwumn8ghj7cnjvghxjme0qyt8wumn8ghj7etyv4hzumn0wd68ytnvv9hxgtcqypwly85wcy0zreahzzk86my5gf6q0tnfaya8lncdpglw97kylhyykqkwds9 and pay 100 sats to use their chip verifier. It checks that your hardware wallet chips match the open source spec.

Sounds like science fiction, but check out this new talk by Bunnie Huang where he presents a technique for "seeing through silicon" - inspecting chips which are on circuitboards from the backside without removal.

https://youtu.be/8aLW4UEuJ_c?t=130

I just published a new read on Nostr!

Introducing a new interactive block visualisation tool - Grid

Check it out:

nostr:naddr1qvzqqqr4gupzq0w7aff8qz0ztjydxssj7ly65d35f7lwh54kngzwuallc0qw7um3qy88wumn8ghj7mn0wvhxcmmv9uq3wamnwvaz7tmjv4kxz7fwwpexjmtpdshxuet59uq32amnwvaz7tmjv4kxz7fwv3sk6atn9e5k7tcpz4mhxue69uhkummnw3ezummcw3ezuer9wchszythwden5te0dehhxarj9emkjmn99uqqk3mjd9jz6ar2wa5x6aqr4wfsg

https://highlighter.com/a/naddr1qvzqqqr4gupzq0w7aff8qz0ztjydxssj7ly65d35f7lwh54kngzwuallc0qw7um3qy88wumn8ghj7mn0wvhxcmmv9uqqk3mjd9jz6ar2wa5x6aqc09kyz

Introducing a new interactive block data visualisation tool - Grid

https://orange.surf/grid/

Send this to your normie friends and family next time you find yourself spreading the good word of fiatjaf nostr:note12lsr7fg7gysjfc7mg6f48n0ghx4s2v7p7fkw5jzjlmm5alxcmkasvcwl65

"How important is the transparency aspect of this, and how far do we, as a country, want to go with our Bitcoin holdings? If we look at the El Salvador model, they have a page that shows exactly how much Bitcoin they hold at all times."

- Nick Neuman of nostr:nprofile1qyxhwumn8ghj7mn0wvhxcmmvqyw8wumn8ghj7mn0wd68ytnzd96xxmmfdejhytnnda3kjctvqqsvwcwuwcwmucx3s7dfs54m49h7uclw4vxh8ygu25m9chk0ypy5ngswlqxkm on https://bitcoin.gob.sv

at the Bitcoin for America summit: https://youtu.be/vrkIUnmLYDI?t=11205

Odell challenges the Strategic Bitcoin Reserve's foundation on seized assets as fundamentally contradicting Bitcoin's property rights principles.

While proposing that seized bitcoin should be legally burned to deter government confiscation, he acknowledges a silver lining: the reserve signals Bitcoin's legitimacy and creates an aligned incentive structure benefiting both holders and the state.

He warns against complacency and calls for continued vigilance in protecting the freedom to use Bitcoin without permission.

nostr:naddr1qvzqqqr4gupzqpxfzhdwlm3cx9l6wdzyft8w8y9gy607tqgtyfq7tekaxs7lhmxfqqk4g6r994qk6etjd93kzm3d2d68yct5v4nkjcedgf5hgcm0d9hz65n9wdjhyan994skgvtyw3es9ckhg9

Block Fee Rate Graph Update