If you're unfamiliar with ecash, you might want to take a look at it. There's stuff going on.
Short version...it's a way to send bitcoin with zero fees and more privately than with bitcoin. It's like handing over a dollar bill to an unseen person (no fee and private). There's more to it, but that's the gist.
I built an ecash treasure token prize into the Wusang game (see this post). It's a good 'ol pirate treasure chest hunt. Somebody will find/win and receive some real bitcoin sats. I thought I'd show how easy it is to accept ecash/bitcoin using a cashu wallet. My current preference is https://cashu.me due to its simplicity.
Here's a video with an example of:
The copy/paste of the cashu token in the vid is how you would receive the @Wusang prize if you were to find it.
Or on YouTube:
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