{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of an Oracle in the context of blockchain?","a":"The role of the Oracle in blockchain is a service tool that provides real-time external data to smart contracts, serving as a bridge to transmit off-chain information onto the chain. Due to the deterministic and closed nature of blockchain itself, smart contracts running on the chain can only execute tasks in such an isolated environment, resulting in isolated existence and inability to communicate with each other among various business blockchains, preventing the entire business from forming a closed loop. The emergence of  Oracle has improved this situation by enabling blockchain to access external data, connecting blockchain to the external world, and providing data information for smart contracts. Oracle achieves decentralization at the node operator and data source levels."}]}],"pr":"a7bf1587529230cb265a62a3917f286a8b77ba6e9dd7bd8c5ef486d7517475f0"}