SBI Crypto shuts down Bitcoin pool as Foundry, AntPool, F2Pool claim 60% of network

SBI Crypto ceased operations of its Bitcoin mining pool in Japan on July 31 after its seven-day average hashrate dropped 64% in a month. On the same day, Foundry USA, AntPool, and F2Pool collectively accounted for 60% of recent blocks. The shutdown began at 22:00 UTC on July 30, with miners disconnecting gracefully and a full Stratum shutdown scheduled by 23:59:59 UTC. SBI's website will remain accessible for historical data and payout status, but the final payout schedule is unspecified. As of 11:22 UTC on July 31, Foundry held 26.67% of attributed blocks, AntPool 17.13%, and F2Pool 16.21%, while SBI Crypto's share dropped to 0.72%, equating to approximately 6.8 exahashes per second. Over the month, SBI Crypto's average BTC hashrate fell from 16.222 EH/s at the end of June to 5.817 EH/s by the end of July. By 11:17 UTC on July 31, its 24-hour average was about 0.452 EH/s, with its last block recorded on July 29. The top three pools had already surpassed 60% before the shutdown, with combined shares of 64.8039% on July 20 and 60.7843% on July 27. Individual pool movements varied, with Foundry, AntPool, and F2Pool showing lower estimated hashrates in the partial July 27 data.

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