# ============================================================================
# Required settings — the stack will not start without these.
# ============================================================================

# Ethereum network: mainnet (the SNRC `.testing` contracts live on mainnet)
# or holesky (test). Mainnet full sync needs ~1 day and ~1.2 TB NVMe.
NETWORK=mainnet

# Beacon checkpoint-sync URL — used ONCE on first sync. Must expose the heavy
# /eth/v2/debug/beacon/states/finalized endpoint (generic beacon APIs do not;
# use a dedicated checkpoint provider). List: https://eth-clients.github.io/checkpoint-sync-endpoints/
#   mainnet: https://mainnet-checkpoint-sync.attestant.io  (also beaconstate.info, sync-mainnet.beaconcha.in)
#   holesky: https://checkpoint-sync.holesky.ethpandaops.io
TRUSTED_NODE_URL=https://mainnet-checkpoint-sync.attestant.io

# ============================================================================
# Optional overrides — sensible defaults are baked into docker-compose.yml,
# so leave these commented unless you need to change them.
# ============================================================================

# Nimbus NAT (default: any). For a stable public node set an explicit IP:
#   NAT=extip:1.2.3.4        # your public IPv4: curl -s ifconfig.me