# Gavin Andresen
# 2011-02-27 00:29:40
# https://bitcointalk.org/index.php?topic=3918.msg55772#msg55772

See: @p{brk}
  @s{(link)} @p{par}

The exact hash done is double-sha256: sha256(sha256(block_header_data)) @p{brk}
See: @p{brk}
 @s{(link)} @p{par}

... for information about sha256 @p{brk}