Payment to yourself detection

[genjix]

Can I guarantee that txids will only ever occur once or twice in listtransactions? IIRC I cannot, right? (because you can split payments or something- not too clear on this).

[Gavin Andresen]

It is possible to generate transactions that "fan out" to an arbitrary number of recipients.

They're non-standard transactions right now, so they won't be relayed or included in blocks.  But you should probably assume that they will be possible in the future (and a miner could, of course, include them in their own blocks now).

[genjix]

ok thanks.