function getBlockimport { getBlock } from "https://deno.land/x/polkadot@0.2.11/api-derive/chain/index.ts"; getBlock(instanceId: string, api: DeriveApi): (hash: Uint8Array | string) => Observable<SignedBlockExtended>Examples const { author, block } = await api.derive.chain.getBlock('0x123...456'); console.log(`block #${block.header.number} was authored by ${author}`); ParametersinstanceId: string A block hash as U8 array or string. api: DeriveApiReturns(hash: Uint8Array | string) => Observable<SignedBlockExtended>