{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the expansion solutions for blockchain?","a":"The main expansion solutions for blockchain mainly include on-chain expansion and off-chain expansion. On-chain expansion refers to improving performance by modifying blockchain rules, such as block size, consensus mechanism, etc. For example, expanding the block size of the Bitcoin blockchain from 1M to 32M, 128M, or even 2G. Additionally, sharding technology adopted by Ethereum 2.0 also belongs to the on-chain expansion solution. Off-chain expansion refers to building a second-layer transaction network outside the main  chain, also known as Layer 2. This solution includes expanding payments, expanding smart contracts, etc."}]}],"pr":"c50aaadbcc0af4ef0714b15cd6e9f094d08332ee8b830647f791596472caaf32"}