Posts Tagged Mining
Re-mining Patoshi Blocks for Dummies
Posted by SDLerner in Uncategorized on September 3, 2020
In my previous article I discussed re-mining with a lot of technical details. A few days ago, a non-technical friend (yes, I have a few of those) asked me what was re-mining all about. I tried hard to find an analogy in the real world that compares to re-mining Bitcoin blocks. My first attempt to […]
The Patoshi Mining Machine
Posted by SDLerner in Uncategorized on August 22, 2020
One of the topics that has been debated endlessly is what kind of hardware Satoshi used for mining. Some people argue he only needed a single computer using the latest generation of Intel processors available in 2009, using a CPU miner with SSE2-optimizations and multi-threading. Others argue that he had about 50 low-end networked computers. […]
Faster SHA-256 ASICs using carry reduced adders
Posted by SDLerner in Uncategorized on February 17, 2015
The core part of Bitcoin mining is performing a double SHA-256 hash digest and comparing the result against the target. Two years ago, in 2013, the first Bitcoin ASIC miners appeared on the market. Since then, mining ASIC technology advanced both in terms of the manufacturing technology (the node) and in terms of design, to […]
The Bitcoin Freeze on Transaction Attack (FRONT)
Posted by SDLerner in Uncategorized on October 5, 2014
Two month passed since my last post and the reason is I’ve been terribly busy working for Coinspect and also helping with Bitcoin Core security. A rainy Sunday evening is a great moment to write, so here is my new post, with some new thoughts. People are trying to understand the security guarantees Bitcoin provides. […]
The Private Automatic Miner Backbone Protocol (PAMBA)
Posted by SDLerner in Uncategorized on April 19, 2014
The need for direct connection between the main miner pools or solo-miners (which is often called the miner backbone), was discussed several times in the forums and in this blog during the last two years. A miner backbone provides not only benefits to the network as a whole, but benefits for those miners that establish […]
The re-design of the Bitcoin block header
Posted by SDLerner in Uncategorized on March 18, 2014
Today is the third time I find an attack to the way Bitcoin uses SHA-256 to perform mining. Two of the attacks belong to a new family of attacks that involve terribly technical details about the inner workings of SHA-256. These are attacks that may impact on Bitcoin probably not before 5 years, and they […]
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