DIP: Cash Send (Cash-Like, XPub Denominated Send)

[coolaj86]

Preview

https://github.com/dashhive/DIPs/blob/aj-xpub-send/aj-xpub-send.md

In Short

Fixing data leakage and user experience by retaining denominations rather than unmixing them, and cleanly separating protocol-level digits (the fees) from the user-level digits (the money).

• Use XPubs prevent the unmixing of coins
• Retaining denominations by sending to multiple outputs
• Retain face value by adding extra stamp (fee) values onto output coins
• More closely stick to the inherent "mixed" quality of physical cash

Notes

There may be a way to split this into two XPub Send and Cash-Like Denominated Send but... they're so integrally tied together:

• You couldn't do Cash-Like Send without XPubs
• You can't make effective use of XPubs without denominations
• CoinJoin denominations aren't stamped properly to be reusable