Not sure if y'all talking about “Ecash” (some scamcoin) or “eCash” (blind signature Bitcoin tokens). The latter is very cool, I just wrote a blog post about it: https://maxmoney.substack.com/p/ecash-for-better-bitcoin-privacy
Discussion
What’s the benefit or purpose
I wrote a blog post about it and linked to it in my previous comment... just read that.
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After reading that I understand now thx 🙏 for putting my naïve way of thinking into perspective