Sealminer A4 Series Debuts as Bitdeer Hits New Bitcoin Mining Efficiency Record – Mining Bitcoin News

Key Takeaways: Bitdeer launched the Sealminer A4 Ultra Hydro on April 7, 2026, hitting 9.45 J/TH efficiency, among the best figures in the industry. The A4 series, powered by Bitdeer’s SEAL04 chips, improves on the A3 series’ 12.5 J/TH, cutting power costs for miners facing tight post-halving margins. BTDR shares gained approximately 2.8% on launch…

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South Korea tightens crypto checks after Bithumb’s $40b error

FSC orders five‑minute balance checks, auto kill switches, and monthly audits at Korean crypto exchanges after Bithumb’s $40b payout error. Summary South Korea’s financial regulator will force exchanges to reconcile user balances with on-chain holdings every five minutes after Bithumb’s multi‑billion dollar payout error. The new regime adds automatic trading halts on major mismatches, monthly…

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