{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the challenges in terms of transaction speed in the blockchain?","a":"Storage capacity limitations: Another bottleneck of blockchain technology is data storage capacity.  If all data is stored on the chain, as the number of block nodes continues to increase, the data will become extremely large, leading to further decreases in speed."}]}],"pr":"b12f7c9375bf0757fa6c4867432861052818a0736a6afc3d78e4481ee29d45b6"}