# Gavin Andresen
# 2011-05-24 08:16:59
# https://bitcointalk.org/index.php?topic=9295.msg138588#msg138588

If processing old transactions becomes expensive, then miners will start charging transaction fees to include them in their blocks. @p{par}

Speculating about exactly HOW the miners will charge (will they subscribe to an 'old transaction service' or somehow contact the old-transaction-spender for the merkle branch of the old transaction?) is a waste of time, in my humble opinion. @p{brk}