Keysend is the solution that makes sense for recieving tips.
Lightning generally works on invoices (permissioned, one time use) which is great when you're buying something physical and/or need a reciept. Its a permissioned one-time event and makes sense for normal purchases.
But thats not what this is. Here we have a product (music) sat on a shelf for anyone to freely use. When someone pays, theres no explicit exchange of goods/services in the traditional checkout sense. We're talking tip jar... Keysend is the tip jar, you can permissionlessly stick money in there.
You're already receiving the service. But because you appreciate the work, you stick the money in the jar. End of transaction. No one needed to give you permission to drop the money in. Keysend is permissionless like that. A static address anyone can push payments to without needing any action or expiring single use transactions on the recipient side. The jar is always open.
Would it make sense to go to a show and every time someone wants to put cash in the tip jar, it requires the band to send them a bill first? No that's insanity.
If the transaction makes sense to provide a reciept (like buying a CD) then lightning invoicing makes sense. But the added friction of an invoice is entirely unnecessary in the context of tipping a performance, especially prerecorded streaming.
Right tools for the right job people...
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