I am reading this The Beacon Chain Ethereum 2.0 explainer you need to read first where it states:
The contents of the Beacon Chain is primarily a registry of validator addresses, the state of each validator, attestations, and links to shards
Just to be sure, this content is basically the content of the latest block of the beacon chain? hence the current block represent the state of the beacon chain? Or the state is stored/linked somewhere else?