bitcoin/bitcoin — pull request #4536 by domob1812 (2014-07-15 15:51:07+00:00)
Title: Implement "getchains" RPC command to monitor blockchain forks.

Port over https://github.com/chronokings/huntercoin/pull/19 from
Huntercoin: This implements a new RPC command "getchains" that can be
used to find all currently active chain heads. This is similar to the
-printblocktree startup option, but it can be used without restarting
just via the RPC interface on a running daemon.