Is it possible to include an empty entry in a transaction?
For example, an empty entry could be used to guarantee a
exit was included in a transaction, using
SIGHASH_SINGLE | ANYONECANPAY in combination with
Of course, you would still need to include the miners' fees in another input.
Correct me if I'm wrong, but although to spend utxos to 0 result is legal, it is quite difficult to generate utxos 0 result, Bitcoin Core does not generate these transactions below the dust limit.
Likewise, OP_RETURN provides utxos at output 0, but they can not be spent as part of a
sighash_singlebecause they are priceless.