Free Transaction, BitcoinQt 0.8.6beta

[lenny_]

Hello,

AFAIK a FREE transaction must have (as of 0.8.6 satoshi client version) less than 300 bytes.
Yesterday, my Bitcoin-Qt 0.8.6beta just send - what seems to be invalid - transaction, which have over 600 bytes and 0 Fee. How come?  

Shouldn't Bitcoin-Qt apply 0.0001 BTC, because transaction is over 300 bytes?

https://blockchain.info/tx/c32c43c50268d0ca1d336659586aa00c4653a97fe606260fbd5d99113bf9c35c

EDIT: My bad! AS I find out (https://gist.github.com/gavinandresen/7670433#086-wallet), transactions over 1000 bytes must have a fee. So this one is a 100% valid free transaction. Any one can guess, how long it can wait for confirm?

Thanks,
Lenny

[1715335853]

1715335853

[Parliament]

Any one can guess, how long it can wait for confirm?

0 fee is generally a bad idea. You can calculate your transaction's priority with:

Code:

priority = sum(input_value_in_base_units * input_age)/size_in_bytes

So we have:

Code:

(160000000*281 + 50000000*390 + 150000000*375 + 150000000*141) /669
= 212,047,832 

57,600,000 is the cutoff, so you're quite a bit above that ("high priority"). However, 0 fee transactions always take significantly longer to be included in a block.

To answer your question: a couple hours would be a good bet.