Greediest Heaviest Observed Subtree [English]

InterPARES Definition

No definition in earlier IP projects. ITrust definition not yet developed.

Other Definitions

  • Buterin [2017] (†818 s.v. "Modified GHOST Implementation"): The "Greedy Heaviest Observed Subtree" (GHOST) protocol is an innovation first introduced by Yonatan Sompolinsky and Aviv Zohar in December 2013. The motivation behind GHOST is that blockchains with fast confirmation times currently suffer from reduced security due to a high stale rate - because blocks take a certain time to propagate through the network, if miner A mines a block and then miner B happens to mine another block before miner A's block propagates to B, miner B's block will end up wasted and will not contribute to network security.