nostr:npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg could mints accept keysend LN payments with p2pk pubkey and a relay specified in extra tlvs so that it would publish locked ecash as nostr events to that relay when it receives sats? Thinking of having podcasting2.0 streamed payments delivered as ecash