{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The proposal module of a blockchain can use which protocol for querying?","a":"GraphQL protocols: Some blockchain platforms, such as Ethereum 2.0 and Polka Dot, offer GraphQL APIs, which is a custom query language that enables more flexible  access to data."}]}],"pr":"cc769c347d8ba2d6bba87a5584a8796df6cbc86dede7e6a56247330dd731ba96"}