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.
The series takes place on the fictional continents of Westeros and Essos and chronicles the power struggles among the noble families as they fight for control of the Iron Throne of the Seven Kingdoms. As of June 14, 2015, 50 episodes of Game of Thrones have aired, concluding the fifth season. The series has been renewed for a sixth season.