Bitcoin’s estimated hash rate hit a record as miner pressure mounted

Bitcoin’s estimated seven-day average hash rate reached a record 262 exahashes per second on October 9, 2022, according to Luxor’s Hashrate Index. The mining-data provider said the measure had risen 7.8% over the preceding week, while blocks in the active difficulty period were arriving in an average 8 minutes 46 seconds—well ahead of Bitcoin’s roughly ten-minute target.

The figures signaled that unusually large computing capacity was competing for the same protocol-defined block subsidy. That strengthened the network’s resistance to an attack in a narrow computational sense, but it also intensified competition among miners at a difficult point in the 2022 market cycle. Hashrate Index placed dollar-denominated hashprice at about $0.0783 per terahash per day on October 9, a gross-revenue estimate before electricity, payroll, financing, depreciation and other operating costs.

A record, but not a direct reading

Hash rate is not measured by polling every mining machine. Data providers infer it from observed block production and the network difficulty. Because finding blocks is probabilistic, estimates can swing even if installed computing capacity does not change.

That limitation explains why reputable series do not produce identical readings. Hashrate Index’s seven-day methodology reported 262 EH/s for October 9. A Coinburn calculation using Coin Metrics’ seven daily HashRate observations from October 3 through October 9, inclusive, produces 257.23 EH/s after converting terahashes to exahashes and taking the arithmetic mean. Blockchain.com likewise cautions that daily raw estimates can rise or fall because of block-discovery randomness and describes a seven-day average as more representative.

The disagreement is a measurement limitation, not evidence that one series recorded a different physical network. The defensible event-day conclusion is that smoothed estimates were at or near record territory, not that exactly 262 quintillion hashes were observed every second.

The next retarget was already in view

Bitcoin adjusts its proof-of-work target every 2,016 blocks. Faster-than-target block production during an epoch points toward a higher difficulty at the next retarget, so that subsequent blocks again tend toward a ten-minute average.

On October 9, Hashrate Index projected an increase of roughly 13% to 14% and expected the adjustment on October 10. That was a forecast, not a completed protocol event. Its importance was economic: if difficulty rose while bitcoin’s price and transaction-fee income did not compensate, each unit of mining equipment would face lower expected bitcoin production and lower expected dollar revenue, all else equal.

The same October 9 report estimated that transaction fees supplied 0.94% of block rewards over the preceding week, compared with 1.51% one week earlier. Those are Hashrate Index’s weekly calculations, not a claim about every block or every operator. They show why miners could not rely on fee income to offset a large increase in competition.

What the signal did—and did not—mean

A rising hash-rate estimate can reflect more machines operating, more efficient machines replacing older units, improved uptime, or some combination. The October 9 data did not identify which companies added capacity, where each machine operated, how much electricity the network consumed or whether individual miners were profitable. Nor did a record estimate guarantee future network security; concentration, software, energy and custody risks are separate questions.

For the mining industry, the day’s consequential development was the collision between technical strength and commercial pressure. More computing work was securing Bitcoin while the expected gross revenue available to each terahash remained thin. That divergence made the approaching difficulty change more important than a routine chart high.

Later confirmation

At block 758,016 on October 10, 2022, Bitcoin’s recorded difficulty rose to approximately 35.61 trillion. The change from the preceding difficulty was 13.55%. That later result confirms the direction and approximate scale of the October 9 forecast, but it was not yet knowable as a completed adjustment on the event date.