Want to send #bitcoin on chain to your friends with no miner fee?
Seems many are unaware of the added benefits of Whirlpool “mix to xpub” feature easily used in Sparrow Wallet.
You can freely remix (send) any whirlpool uxto set to any xpub for free when your post mix uxto is selected for a “remix”.
Free, anonymous on chain bitcoin spends…
1. Ask for the Postmix XPUB of your destination, better to be a new wallet & not share personal information
2. Freeze ALL of your UTXOs, but the one you want to send
3. Add the destination XPUB as a watch only wallet (Ctrl/CMD + N) -> Watch only -> XPUB
4. From your wallet, configure it to “Mix To” to the destination xpub
5. When your uxto is selected for a remix it will have a 75% chance of being sent each time, until it does.
6. Let the recipient then mix to another private xpub or whirlpool it.
This is also how you can send your own stack to a different wallet key pair you own with no transaction fees! Many “mix to” cold storage.
Operating inside the self custodial Whirlpool ecosystem is going to continue to develop very interesting opportunities… like just imagine the fun of free mix to BIP47 paynyms!
credit to Samourai Wallet, Sparrow Wallet and their teams! 
