# Chainspec Configuration Up-to-date chainspec definitions for fuel-core to use in continuous deployment environments. A chainspec is used to configure the initial state of a node or network. This includes initial account balances, configurable transaction validation rules, or even contracts and initial contract state. ## Dev Chainspec Account | Secret Key | Address | |------------------------------------------------------------------|------------------------------------------------------------------| | df76bc018108a24388803d4e58e7246202aa21108a9a12449c9f473e0477c451 | 53a9c6a74bee79c5e04115a007984f4bddaafed75f512f68766c6ed59d0aedec |