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News · Oct 11, 2026 · 3 min read

Bitcoin today: CleanSpark ends monthly mining reports, and ETFs take in $21 million

CleanSpark mined 529 bitcoin in September, sold 702, and will stop publishing monthly updates. The US spot ETFs took in $21 million on Friday after $731 million left in two days, and Ledger confirmed a hardware implant in one affected wallet.

Firsthand card: "Bitcoin today: CleanSpark ends monthly mining reports, and ETFs take in $21 million"

CleanSpark mined 529 bitcoin, sold 702, and is ending monthly updates

CleanSpark said on Friday 9 October that it produced 529 bitcoin in September, 17.64 a day on average, and ended the month holding 13,530, according to its operating update. It sold 702 in the month, 2 at spot and 700 through call exercises, at an average of $72,928, so its holdings fell from 13,703 at the end of August. Of the 13,530, 3,475 are posted as collateral or receivable in derivative transactions.

Its operating hashrate stood at 50 EH/s at the end of September, against an average of 36.0 EH/s over the month. The company will move to quarterly reporting and drop the monthly updates, which were the clearest public record of how much a listed miner produces.

The same release said the $2.276 billion of senior secured notes announced on 25 September have closed, and that the Sandersville data-centre project is fully funded through completion, against a lease CleanSpark puts at about $6.6 billion of contracted revenue. It fits a wider drift: a Miner Weekly estimate published by Bitcoin.com News on 4 October put the realised hashrate that listed miners have lost at 75 EH/s while their AI and high-performance computing revenue rose.

529 bitcoin mined in September, 702 sold, and the monthly report is ending.

The ETFs took in $21 million on Friday after $731 million left in two days

The US spot bitcoin ETFs took in a net $21.13 million on Friday, Bitcoin.com News reported: $22.38 million into BlackRock's IBIT and $2.33 million into VanEck's HODL, less $3.58 million out of Fidelity's FBTC. Their combined net assets stood at $105.84 billion. Ether funds lost another $56.10 million, a ninth straight day of outflows.

Our ETF flows chart has the two days before at $487.1 million and $244.1 million out. With Friday added, October is about $389 million down so far, after $2.65 billion came in over September. The same report cites Glassnode saying existing holders are driving the rally while new money from ETFs, stablecoins and corporate treasuries has slowed.

Chart: Net flow into the US spot bitcoin ETFs every trading day since mid-August. Friday 9 October is not yet in the series; the two red bars before it are 7 and 8 October. Open the chart

Bitcoin held about $82,900 while $4.5 billion of calls piled up near $95,000

Our price series reads $82,917 this morning, 3.3% below its $85,771 close on 6 October. The weekend has been quiet: on our liquidations chart, 9 October saw $13.7 million of longs and $46.1 million of shorts force-closed, and funding is about 1.4% a year on our funding chart. A year after the crash of 10 October 2025, futures carry half the leverage they did then.

Options traders are leaning up. Coinglass data cited by Bitcoin.com News has calls at 268,357 bitcoin, 60.24% of options open interest. Deribit's largest single position is 25,030.6 bitcoin of $95,000 calls expiring on 30 October, about $2.07 billion of notional, and with the $90,000 and $100,000 strikes the three come to about 54,750 bitcoin, or $4.53 billion at $82,800. That is where people have placed bets, not a forecast.

Chart: Bitcoin's daily price since mid-August. The latest point is this morning's reading, not a close. Open the chart

Ledger confirmed a hardware implant in one affected wallet

Ledger said on Saturday 10 October, in a post from its support account on X, that one of the affected users' devices contained an unauthorised hardware implant, and that it has no indication its own systems or services were compromised, Bitcoin.com News reported. The wallets were bought from CryptoBilis, a reseller in Southeast Asia that has stopped selling its hardware wallet stock.

Two trackers put the losses near $93 million: Yfarmx at about $93.4 million across 471 addresses and Bitquery at about $92.9 million across 311. Ledger has verified neither. Former Mt. Gox chief Mark Karpelès has published findings describing a modified Nano X with a concealed circuit board; investigators have not confirmed that every affected wallet had one.

Ledger's advice is plain: do not set up a device bought from that reseller, and if you already did, move the coins to a new signer with a new seed. We covered the first reports in Friday's recap.

Bessent says the US will "probably" seize $1 billion of Iran-linked crypto this week

Treasury Secretary Scott Bessent told Newsmax's NPolicy Summit on Thursday that the US would "probably" seize about $1 billion of Iran-linked crypto this week, The Block reported. He did not name the wallets or the coins, or say whether the sum is new. The Block counted seven Iranian crypto exchanges sanctioned since June. The report did not say any seizure had yet taken place.

What it means for miners

Quiet weekends do not change the arithmetic. Hashprice is $39.47 per petahash a day this morning, from $40.85 on 6 October, because the price is lower. In bitcoin it has hardly moved: about 0.000476 coins per petahash a day on both dates, and our difficulty page estimates the next adjustment, in about six days, at +3.3%, which would trim that by about 3%.

CleanSpark's September shows the other road a large miner can take: more of its capital is going to data centres, and fewer numbers are being published. A machine on cheap power that mines and keeps its coins is a simpler business than either.

On today's hashprice the most efficient machine in stock on our cheapest power, the Bitmain Antminer S23 XP Hyd at 8.9 J/TH in Nigeria at 3.9¢ a kilowatt-hour, makes a coin for about $17,900 of electricity, against $82,900 to buy one. Output is never guaranteed.

A coin made for about $17,900 of electricity, against $82,900 to buy one.

Chart: Bitcoin earned per petahash of hashrate per day. It has barely moved this month while the dollar price has. Open the chart

Sources and further reading

Disclosure

Firsthand Bitcoin sells and hosts mining hardware, including this machine. No manufacturer, distributor or affiliate programme paid for or reviewed this page and we take no commission on the links above. Historical figures are computed from daily bitcoin price and network hashprice, each day valued at its own prices. Nothing here is investment advice.