You can create a transaction which spends the output to yourself, attaching
a fee to that transaction. In order for miners to grab the transaction fee
on that transaction, they would have to also mine the original transaction.
Likely, you'd have to do this by hand, but software could be written to
simplify doing it. No protocol changes needed.

Ben


On Thu, Jan 16, 2014 at 5:39 PM, Dâniel Fraga <fragabr@gmail.com> wrote:

>         Someone sent me a very small donation (0.00121 BTC) without
> paying fees. I don't know who sent it and I know this type of
> transaction are usually rejected by miners. Take a look at it below:
>
> https://imageshack.com/i/ngv5g8j
>
>         Even with the a low probability of confirmation, I
> was hoping that after a few days it could be included in a block, but
> Blockchain.info simply removed it (I know the sender sent from a
> Blockchain.info wallet, because he added a note):
>
>
> https://blockchain.info/pt/tx/3cde47ee3979a46b36bd61bdb0caf9c11dea58ac99f17fb17b95728766de70e0
>
>         As you can see now it shows as "Transaction not found".
>
>         My suggestion is: it would be nice if the receiver could have a
> chance to pay the fee when the sender didn't pay any fee. For example,
> I could pay a fee of 0.0001 BTC and receive 0.00121 BTC. In the end I'd
> have 0.00111 BTC. Better than nothing.
>
>         Would it be technically possible to do that or it would be too
> much trouble to change the protocol to allow the receiver to pay an
> optional fee?
>
>         Ps: I'm not a programmer, but if the receiver could
> optionally "attach" some fee to the transaction, even if he/she didn't
> sent the transaction, this could be solved. Bitcoin-qt could even warn
> the receiver he received a transaction without fee and if he wants
> faster confirmation he could pay a fee.
>
>         Ps2: if this is a silly suggestion, just ignore it. I tried on
> Bitcointalk, but nobody answered.
>
> --
> Linux 3.12.0: One Giant Leap for Frogkind
> http://www.youtube.com/DanielFragaBR
> http://mcxnow.com
> Bitcoin: 12H6661yoLDUZaYPdah6urZS5WiXwTAUgL
>
>
>
>
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