Based on the Bitcoin protocol, the blockchain database is shared by all nodes participating in a system. Upon joining the network, each connected computer receives a copy of the blockchain, which has records, and stands as proof of, every transaction ever executed.
Tyrion Lannister's shield during the battle on the Green Fork is a massive slab of heavy ironwood banded with steel. In Game of Thrones - A Telltale Games Series, House Forrester controls most of the wolfswood's ironwoods. Their seat, Ironrath, is located at the edge of the largest ironwood forest in Westeros.
Image caption Martin McGuinness and Peter Robinson with actress Michelle Fairley from Northern Ireland who appears in Game of Thrones. A fourth series of the TV fantasy drama Game of Thrones will be filmed in Northern Ireland, it has been confirmed. The show is produced by the American film company, HBO.