// version 2 starts from block 1009827, which is on or around the 20th of March, 2016. No fork voting occurs for the v2 fork.
// version 2 starts from block 1009827, which is on or around the 20th of March, 2016. Fork time finalised on 2015-09-20. No fork voting occurs for the v2 fork.
// version 2 starts from block 624634, which is on or around the 23rd of November, 2015. No fork voting occurs for the v2 fork.
// version 2 starts from block 624634, which is on or around the 23rd of November, 2015. Fork time finalised on 2015-11-20. No fork voting occurs for the v2 fork.