Are there any pools that openly discriminate against some transactions? For example, they only put transactions with a fee in their blocks, thus ignoring all "free" transactions?

  • 4
    Since the standard client discriminates openly, I'd expect many pools to discriminate in the same way. Apr 9, 2012 at 20:17
  • re: Eligius wow, is that correct? if the avg tx size is 250 bytes with a minimum fee of .0005 BTC, then by my calculations, Eligius is charging 40x this?
    – joe
    Mar 17, 2013 at 19:47

1 Answer 1


Yes; many pools only include transactions based on fees and/or whether the transactions have standard forms. Most pool operators require that transactions have certain fees based on the size (in bytes, not BTC) of the transaction, and I believe that most require the transactions to be in a standard "Pay to address(es)" or "Pay to IP(s)" form. Eligius, for example, generally includes transactions if they have 40.96 µBTC of fees per 512 bytes of transaction, but it could be more or less if they think the transaction seems like "spam" or you make arrangements with the pool operator.

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