1.

Hainan Development and Reform Commission issued a "notice" that the virtual currency "mining" activities would be classified as an industry to be eliminated, and the price will be increased by 0.8 yuan per KWH.

2.

Tim Beiko, an ethereum developer, published an article about some changes after The Merge. Firstly, currently under proof of work, blocks come in on average every ~13 seconds with a fair amount of variance in actual block times. Under proof of stake, blocks come in exactly each 12 seconds. Secondly, a finalized block is one which has been accepted as canonical by >2/3 of validators. To create a conflicting block, an attacker would have to burn at least 1/3 of the total stake, which represents over 2.5 million ETH on Ethereum. Thirdly, post-merge, several fields previously contained in proof of work block headers become unused as they are irrelevant to proof of stake. In order to minimize disruption to tooling and infrastructure, these fields are set to 0, or their data structure’s equivalent, rather than being entirely removed from the data structure. The full changes to block fields can be found in EIP-3675. Fourth, pre-merge, we see the 0x44 opcode returns the difficulty field in the block header. Post-merge, the opcode, renamed to RANDOM, points to the header field which previously contained mixHash and now stores the random value from the beacon chain state. The full changes can be found in EIP-4399.

3.

360 Threat Situation Monitoring System has developed a "mining" monitoring and disposal function, which can form a regular "mining" monitoring mechanism from the regulatory side, enterprise side and city side respectively. According to the monitoring data of 360 threat posture monitoring system in November, the average daily mining host IP activity is 109,000, and the main network types used are home broadband, enterprise private line and data center, mainly distributed in China's Guangdong Province, Jiangsu Province and other places.

4.

Erdos: On November 23, the high investment company organized a meeting on the implementation of the relevant deployment of virtual currency "mining" remediation work and the lease arrears were notified, requiring all enterprises to complete the clearance of arrears in accordance with the relevant requirements of the high investment company and the higher authorities to clear the lease arrears by the deadline.

5.

According to Arcane Research, mining concept stocks have outperformed BTC in terms of overall returns so far in 2021. Arcane Research indexed the top 15 mining concepts by market cap weighting and showed that the index is up 215% this year, while bitcoin is up just 99% over the same period.

6.

Bitcoin mining company Bitfarms said it mined 339 bitcoins in November, down from 343 in October, as network difficult increased. During November, the firm received 400 MicroBT M30S miners and 3,588 Bitmain S19j Pro miners, driving a 16% increase in the hashrate to 2.1 exahash per second (EH/s).

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7.

Compute North and Marathon Digital extended their hosting agreement to more than 100,000 bitcoin mining machines across the U.S.. The units will be powered mostly by wind and solar energy. 11 月 2 日，On Nov. 2, Marathon said once it receives all outstanding purchase orders, it expects to have approximately 133,000 operational miners generating about 13.3 exahash per second. Its “blended” cost of electricity and hosting will be about $0.042 per kilowatt hour.

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8.

Riot said that it mined 466 bitcoins in November, an increase of about 300% year-over-year but only a very slight increase from the 464 bitcoins it mined in October. As of Nov. 30, the company held about 4,464 bitcoins and has mining power of 3 EH/s.

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9.

Marathon received another 15,520 top-tier ASIC miners from Bitmain last month. The company boosted its total bitcoin holdings to about 7,649.1. Marathon’s fleet consists of 31,000 active miners producing approximately 3.2 EH/s. However, upgrades and maintenance at the power station resulted in Marathon mining significantly fewer bitcoins in November.

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10.

Northern Data announced its recent operating figures with revenues of €180-220 million and EBITDA of €100-125 million for fiscal year 2021. Owned and hosted miners are 17,000 of ASICs' and 223,000 of GPUs'.

11.

Titan, an innovator in the bitcoin mining ecosystem, announced the successful completion of its $6 million private sale round for the Lumerin Protocol. Strategic partners include: Cadenza Ventures, Fundamental Labs, Outlier Ventures, Tribe Capital, Digital Finance Group, Caballeros Capital, and 11-11 DG Partners.

The Lumerin protocol allows Bitcoin hashrate to be a tradable, liquid financial asset, unlocking mining profitability and providing greater access to capital and investments.

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12.

Canadian mining firm DMG Blockchain Solutions has purchased 1,800 Bitmain Antminer S19 XPs, the next-generation mining machine from Bitmain. The machines will be delivered starting next July.

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13.

According to Okline data, bitcoin miners earned about $1.69 billion in November, down 1.93% from $1.72 billion in October, with block rewards accounting for 98.55% of the total. Ether miner revenue for the same period totaled about $1.97 billion, up 11.66% from $1.76 billion in October.

14.

BitFuFu is abandoning its mining rigs in Kazakhstan and buying new ones from Bitmain and setting them up in the U.S., after weeks of power rationing in the Central Asian country. BitFuFu’s new machines have already arrived in the U.S., a company spokesperson told CoinDesk. The company previously told users that it was facing delays taking the machines through customs and transporting them to the mines because of the Thanksgiving holiday.

According to the Financial Times estimates, BitFuFu has 80,000 rigs in Kazakhstan after moving there from China because of a government crackdown on crypto mining. A company spokesperson refused to comment on the estimate.

The BitFuFu spokesperson told CoinDesk the company might try to sell its machines in Kazakhstan, but hasn’t reached a decision yet.

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15.

Hut 8 Mining releases mining production highlights update for November 2021:

265 Bitcoin were mined, resulting in an average production rate of 8.83 Bitcoin per day.

100% of the self-mined Bitcoin for the month of November were deposited into custody, consistent with Hut 8's Hodl strategy.

Total Bitcoin balance held in reserve is 5,242 as of November 30, 2021.

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16.

TeraWulf raised $200 million in debt and equity financing from institutional and individual investors, the company announced Thursday. The financing includes about $123.5 million in a three-year, senior secured term loan and subscription agreements with investors to purchase newly issued shares of the company’s common stock for about $76.5 million. Investment bank Moelis acted as an exclusive placement agent for TeraWulf’s debt and equity financing. In June, TeraWulf said that it will merge with Nasdaq-listed Ikonics (IKNX) to go public and trade under the symbol “WULF.” The miner said on Thursday that the deal is expected to be completed during the week of Dec. 13.

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17.

U.S. Senator Elizabeth Warren (D-Mass.) questioned the environmental footprint of Greenidge Generation’s (GREE) bitcoin mining operation in New York state in a detailed letter to the publicly traded company’s CEO.

Warren wrote Jeffrey Kirt that she was concerned about the company’s energy usage and impact on the environment and consumers.

“Given the extraordinarily high energy usage and carbon emissions associated with Bitcoin mining, mining operations at Greenidge and other plants raise concerns about their impacts on the global environment, on local ecosystems, and on consumer electricity costs,” she wrote, asking for a detailed response by Dec. 17.

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18.

Ukrainian law enforcement has uncovered an illegal mining farm located in the Kyiv region that has stolen an estimated 3.5 million hryvnias (roughly $128,000), according to a statement issued by the prosecutor's office.

While the equipment has been confiscated, authorities have not managed to find out who was responsible for setting up the operation. In order to remain undetected and reduce the level of electricity consumption, whoever operated the facility connected it directly to one of the local electrical substations.

Their actions could have caused electricity shortages in residential buildings and factories, the prosecutor's office says.

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19.

Russian and Ukrainian authorities have shut down a number of illegal crypto-mining sites. These underground mines were found in the Russian capital Moscow, the Ukrainian capital Kiev and around the Russian Republic of Dagestan. The mining facilities in the mines were allegedly powered by stealing electricity. Ekaterina Korotkova of the Moscow Interregional Transport Prosecutor's Office said the cost of the illegally consumed electricity used to power the mining hardware exceeds 500,000 rubles (about $7,000) per day. Authorities have initiated criminal proceedings and intend to prosecute the mine's owner.

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