{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does an RPC server access older blocks?","a":"Getting Blockchain Data: Firstly, the RPC server needs to obtain the data of the required  older blocks from a blockchain data source, such as the Bitcoin network or the Ethereum network. This can be achieved by calling the corresponding blockchain API interfaces."}]}],"pr":"801a8e28906a194399d8012dcb2480e7648aa197eadc198bef8fa531ef19552b"}