# Gavin Andresen
# 2010-12-22 14:17:45
# https://bitcointalk.org/index.php?topic=2407.msg32493#msg32493

@s{quotedtext}
@s{quotedtext}
 @p{brk}
Yes, that is exactly what the blkindex.dat file is. @p{par}

wallet.dat contains "extended dance mix" versions of all the transactions you care about (all of "your" receives/sends).  Those are loaded into memory at startup (and then kept up-to-date as new transactions are seen), so calculating "your" balance is quick (just scan through all wallet transactions in memory and total them up). @p{brk}