An example operation may include one or more of receiving cryptocurrency information of a cryptocurrency mined via a blockchain, determining a volatility of the cryptocurrency based on the received cryptocurrency information, in response to the determined volatility being greater than a predetermined threshold, stopping inclusion of transaction data within data blocks for storage on the blockchain, and generating one or more transaction-free data blocks, and storing the one or more transaction-free data blocks within a hash-linked chain of transaction data blocks previously stored on the blockchain.