Posts Tagged ‘Bitmain

After the recent controversy surrounding BitMain and the alleged use of AsicBoost here comes another scandal for the popular ASIC manufacturer. It seems that the company has introduced a backdoor into the firmware of their Bitcoin mining hardware Antminer that allows it to stop miners remotely. Not that they are doing it or will do it at some point, but the ability to do so and control a very large portion of the global mining hashrate is not something that users want. The backdoor is now publicly called and it seems that all recent S9 hardware is affected, and L3, T9 and R4 series hardware are likely to be affected as well.

What is the Antbleed Backdoor:
The firmware checks-in with a central service randomly every 1 to 11 minutes. Each check-in transmits the Antminer serial number, MAC address and IP address. Bitmain can use this check-in data to cross check against customer sales and delivery records making it personally identifiable. The remote service can then return “false” which will stop the miner from mining.

For more information regarding the Antbleed Backdoor and why it is important…

The crypto ASIC miner manufacturer BitMain has just announced a new product, this time not a high-powered new miner, but a low power WiFi router with a built-in Scrypt mining functionality. The new AntRouter R1-LTC is very similar to the already available Bitcoin oriented product AntRouter R1, but instead of an ASIC chip capable of mining BTC it contains one that is designed for mining Litecoin instead. The mining functionality is powered by the company’s BM1485 ASIC chip allowing you to mine any Scrypt-based crypto coin and not only just LTC. Of course the single Scrypt ASIC chip inside the router is not going to make you rich overnight as it mines with a hashrate of just 1.29 MHS, but still it is a nice and interesting idea for a multiple functionalities built inside a single portable device. There is no price announced yet, but the sales of the device should start tomorrow 28th of April and we are going to see the price then, though you should expect that it will be very similar to the one of the R1 BTC model that is being sold for $39 USD. Unlike the BTC WiFi router that is only for solo mining BTC, the LTC version should be able to be used for mining with just about any Scrypt pool according to BitMain, so it will be a bit more flexible and usable solution.

BitMain AntRouter R1-LTC Specifications:
– WiFi standard: 802.11g/n, 2.4G
– WiFi transmission rate: 150Mbps
– ASIC chip type: BM1485
– Hashrate of chip: 1.29MH/s
– Power consumption: 3.78W +2.9% at the wall (220VAC Power efficiency @25C ,85% conversion efficiency of built-in AC to DC power supply)
– Mining power efficiency: 2.93 J/MH +2.9% at the wall (220VAC Power efficiency @25C ,85% conversion efficiency of built-in AC to DC power supply)
– AC voltage input: 100-220V AC
– Input current: 0.2A
– USB charging port voltage: 5V
– Operating temperature: 0 – 40°C
– Storage temperature: -40 – 85°C
– Operating humidity: 5%RH-95%RH,prevent condensation
– Product dimensions: 84.5mm(L) x 56.6mm(W) x 29mm(H)
– Weight: 148 grams

The crypto currency mining ASIC maker Bitmain is getting ready to launch a new Scrypt ASIC miner with shipping expected to start a bit later this month. The new device capable of mining Litecoin (LTC) and other Scrypt-based crypto currencies is called AntMiner L3+ and should be capable of delivering a hashrate of 504 MHS with a power usage of 800W. With the recent jump in interest and the price of Litecoin we are seeing a bit of a revival of the interest in Scrypt-based coins and this is apparently also the reason why Bitmain has prepared a new more powerful device.

The new Antminer L3+ is essentially double the performance and power usage of the regular AntMiner L3 model announced earlier this year. It offers essentially doubled performance by doubling the number of BM1485 ASIC chips from the 144 units in the L3 to 288 in the new L3+. The English website of Bitmain still hasn’t got the product listed, but their Chinese one has the device already listed with a price of 1.686 BTC per L3+ device that does not include a power supply. The shipping should start sometime in between April 15th and April 20th based on the data on the website. Early May deliveries (May 1st – May 10th) are also possible with a lower price of 1.261 BTC per L3+ device.

Bitmain AntMiner L3+ Scrypt ASIC Specifications:
– Scrypt mining hashrate: 504 MHS
– Power consumption: 800W ± 10% (at the wall, with Bitmain’s APW3-1600 PSU, 93% efficiency, 25°C ambient temperature))
– Power efficiency: 1.6J/MH ± 10% (at the wall, AC / DC efficiency of 93%, 25°C ambient temperature)
– Rated voltage: 11.6 ~ 13.0V
– Chip Type: BM1485
– Chip quantity per unit: 288 chips
– Number of boards in the whole machine: 4 pcs
– External dimensions: 352 mm (L) * 130 mm (W) * 187.5 mm (H)
– Machine weight (without packaging): 4.4kg
– Operating temperature: 0°C to 40°C
– Operating Humidity: 5% RH-95% RH, non-condensing
– Network connection: Ethernet
– Noise level: 75dB


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