State Checkpointing

[agunde406]

State checkpointing essentially resets the genesis block of the network, such that all nodes agree on a new starting state/block. This requires many features to accomplish, and an RFC should be produced early in the process.

This feature enables the network to "throw away" historical transactions (those prior to the checkpoint). It also enables very long-running (multi-year) networks while keeping the transaction log a reasonable length.