Reconstruct Historical States Service

An archive node is able to reconstruct historical states from genesis up to the current checkpoint, running during start up. This allows you to create a full archive node while also using checkpoint sync. Generating states this way is faster as many validations can be safely skipped. It also avoids weak subjectivity concerns.

Configuration

When you configure Teku to run the ReconstructHistoricalStatesService, certain CLI options need to be enabled. Including, --reconstruct-historic-states=true and --data-storage-mode="archive".

An additional option can be enabled to aid this service: --genesis-state=<path>. Otherwise, network defaults are used here (such as mainnet defaults).