A major Japanese Bitcoin mining pool just pulled the plug on its Bitcoin service just as 3 mega-miners claimed 60% of the network
By the time SBI Crypto pulled the plug on its Bitcoin pool in Japan on July 31, its seven-day average hashrate had fallen 64% in a month. Later that day, a Hashrate Index reading put Foundry USA, AntPool and F2Pool at...
Bitcoin 1 Minute
Here is the latest from the digital-asset markets: By the time SBI Crypto pulled the plug on its Bitcoin pool in Japan on July 31, its seven-day average hashrate had fallen 64% in a month. Later that day, a Hashrate Index reading put Foundry USA, AntPool and F2Pool at 60% of recent blocks. The timing makes them look connected.
Weekly data tell a messier story. Related Reading A rare Bitcoin reorg just showed why six confirmations may not guarantee a final payment A rare two-block reorg and the rise of a dominant mining pool are reviving the question of how “irreversible” is a Bitcoin payment. Mar 25, 2026 Gino Matos SBI Crypto's official update set the first cutoff at 22:00 UTC on July 30, or 07:00 JST on July 31.
Market Dynamics
Share acceptance stopped, and miners began a graceful disconnect. The company scheduled a full Stratum shutdown by 23:59:59 UTC. Its website would stay open for historical data and payout status.
The final payout schedule remained unspecified, as did the end dates for API and portal access. At about 11:22 UTC on July 31, Foundry held 26. 67% of attributed blocks, AntPool 17.
SBI Crypto was down to 0. 72%, or an estimated 6. 8 exahashes per second.
Market Impact
The dashboard moved again within minutes. 01% reading captures a moment, rather than a lasting level of control. Related Reading 84% of BTC hashrate secured Bitcoin DeFi in Q1, but miners saw little fee upside Rootstock’s Q1 report shows a large share of Bitcoin hashrate securing smart-contract infrastructure, but fees and usage still decide whether that security becomes economically meaningful.
May 21, 2026 Liam 'Akiba' Wright SBI Crypto's daily telemetry charted a month-long retreat. Its seven-day average BTC hashrate dropped from 16. 222 EH/s for the period ending June 30 to 5.
817 EH/s for the period ending July 30. By 11:17 UTC on July 31, separate operational statistics put the 24-hour average at about 0. SBI's official block list showed July 29 as its latest block.
Crypto markets are watching this development closely as investors weigh its potential impact on prices.
