# Gavin Andresen
# 2012-05-08 18:50:17
# https://bitcointalk.org/index.php?topic=78494.msg888645#msg888645

On restart, you should be able to ask bitcoind for the top-of-chain block (using getblockcount/getblockhash/getblock). @p{par}

If it's not in your database, then add it.  Then look at the previous block hash, and if it's not in your database ask bitcoind for it (and so on). @p{par}

To be extra safe, after you're all done ask bitcoind for the top-of-chain block again to see if there was a block re-org while you were catching up. @p{brk}