It used to be Matt Corallo but I don't know if that's changed. I searched the key on keyserver.ubuntu.com and had no problem finding it.
http://keyserver.ubuntu.com:11371/pks/lookup?search=0x0E10F0EE&op=vindexpub 2048R/0E10F0EE 2011-09-07
uid Blockchain Snapshots
sig sig3 0E10F0EE 2011-09-07 __________ __________ [selfsig]
sig sig 944DE5F7 2011-09-07 __________ __________ Nils Schneider
sig sig 43E08E54 2011-09-07 __________ __________ Matt Corallo (BlueMatt)