Were you foolish enough to run a BIP-110 node despite my warnings that it would break? Now your node is stuck at height 961,633 and simply switching to a different client won't fix it. To get back on the real Bitcoin chain: $ bitcoin-cli invalidateblock 0000000000000000000169eb6f811ddbd0daf343af7b62180cdb13e7c78dbc16 $ bitcoin-cli stop [install a non BIP-110 client] $ bitcoind -reindex -daemon(Jameson Lopp)