interface SubstrateNetwork implements KnownSubstrateimport { type SubstrateNetwork } from "https://deno.land/x/polkadot@0.2.42/networks/types.ts"; PropertiesgenesisHash: HexString[]The genesisHash for the chain hasLedgerSupport: booleanDoes the chain has support for Ledger devices icon: IconThe IdentityIcon to use for the chain isIgnored: booleanFlag set when we don't include this chain isTestnet: booleanFlag to indicate a testnet optionalslip44: number | nullThe Ledger-specific/required slip44 for the chain