The file in the snapshot chainstate dir which stores the base blockhash. This is needed to reconstruct snapshot chainstates on init.
Declared in <node/utxo_snapshot.h>
inline fs::path const SNAPSHOT_BLOCKHASH_FILENAME = SNAPSHOT_BLOCKHASH_FILENAME{"base_blockhash"};
Because we only allow loading a single snapshot at a time, there will only be one chainstate directory with this filename present within it.