The Bitcoin mining industry saw its second strongest month ever in April 2021, generating total revenue of $1,702,531,320, or $56,751,044 per day on average, as a spike in transaction fees helped make up for slight downward pressure on price.
The strong total revenue figures can be partially attributed to the fall in hash rate that occurred earlier in the month, slowing the pace at which blocks were mined, leading to increasingly competitive (and expensive) transaction fees.
Three-month view of the mempool.
Percent miner revenue from fees (seven-day moving average).
The month of April was an excellent example of the set of economic incentives built into the protocol. A significant portion of the hash rate came offline earlier in the month, slowing blocks and increasing fees for settlement on the blockchain. The rise in fees created an increasing economic incentive to sell hash rate to the Bitcoin network while block times were coming in slow.
The Bitcoin network is more robust than ever, and total miner revenue is just one metric to quantify this empirical reality.