Bitcoin mining has grown into a vast economy over the past few years as large ASIC-powered mining farms process transactions for the $32 billion dollar market. In the early days, people could mine bitcoins using their central processing units (CPU) and they still can, but the undertaking is extremely inefficient. However, a few people still mess around mining bitcoins using older computers and retro devices merely for the fun of it and for experimentation purposes.Bitcoin Mining With Classic Computers and Retro Gaming Consoles
The bitcoin mining ecosystem is a competitive environment of pools processing transactions while simultaneously securing the network. Miners run special software and use application-specific integrated circuitry (ASIC) to mine bitcoins these days, using chips far more efficient than your standard CPU. Currently, older computers can mine bitcoins at a prolonged rate, but it’s still pretty cool to see if a classic system can perform the task of bitcoin mining.
One bitcoin enthusiast has done just that a few times with older computers. Ken Shirriff is well-known in the bitcoin community for his work on getting the bitcoin symbol added to Unicode. Shirriff also has a popular blog where writes about his projects and how he has mined bitcoins using classic devices from the past. Just recently Shirriff has been working on a Xerox Alto restoration and managed to get the seventies built computer to mine bitcoins at 1.5 hashes/second. The Xerox Alto is a well-known computer classic that was the first device to support a graphical user interface (GUI) in 1973.
“I’ve been restoring a Xerox Alto minicomputer from the 1970s and figured it would be interesting to see if it could mine bitcoins,” explains Shirriff.
"I coded up the necessary hash algorithm in BCPL (the old programming language used by the Alto) and found that although the mining algorithm ran, the Alto was so slow that it would take many times the lifetime of the universe to successfully mine bitcoins."
The computer’s 1.5 blocks per second is significantly slower than the chips used today. Shirriff details the Xerox Alto’s speed would take “5000 times the age of the universe” to mine one block. For demonstration purposes, Shirriff used the input of a successfully mined block to see if the algorithm succeeded. Shirriff’s code is available on Github for those who would like to try out Xerox Alto mining.
Read morehttps://news.bitcoin.com/mining-bitcoin-old-computers-retro-gaming-consoles/