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![]() | As the Bitcoin hash rate reaches new all-time highs, there’s never been a better time to discuss blockchain security and its relation to the hashing power and the Proof of Work (PoW) that feed the network. The Bitcoin system is based on a form of decentralized trust, heavily relying on cryptography. This makes its blockchain highly secure and able to be used for financial transactions and other operations requiring a trustless ledger. submitted by BlockDotCo to u/BlockDotCo [link] [comments] Far from popular belief, cryptography dates back to thousands of years ago. The same root of the word encryption — crypt — comes from the Greek word ‘kryptos’, meaning hidden or secret. Indeed, humans have always wanted to keep some information private. The Assyrians, the Chinese, the Romans, and the Greeks, they all tried over the centuries to conceal some information like trade deals or manufacturing secrets by using symbols or ciphers carved in stone or leather. In 1900 BC, Egyptians used hieroglyphics and experts often refer to them as the first example of cryptography. Back to our days, Bitcoin uses cryptographic technologies such as:
Here is a graphic example to make things more clear: – Extract from the MOOC (Massive Open Online Course) in Digital Currencies at the University of Nicosia. Furthermore, hash functions are used as part of the PoW algorithm, which is a prominent part of the Bitcoin mining algorithm and this is what is of more interest to understand the security of the network. Mining creates new bitcoins in each block, almost like a central bank printing new money and creates trust by ensuring that transactions are confirmed only when enough computational power is devoted to the block that contains them. More blocks mean more computation, which means more trust. With PoW, miners compete against each other to complete transactions on the network and get rewarded. Basically they need to solve a complicated mathematical puzzle and a possibility to easily prove the solution. The more hashing power, the higher the chance to resolve the puzzle and therefore perform the proof of work. In more simple words, bitcoins exist thanks to a peer to peer network that helps validate transactions in the ledger and provides enough trust to avoid that a third party is involved in the process. It also exists because miners give it life by resolving that computational puzzle, through the mining reward incentive they are receiving. For more info, contact Block.co directly or email at [email protected]. Tel +357 70007828 Get the latest from Block.co, like and follow us on social media: ✔️YouTube ✔️Medium ✔️Telegram ✔️GitHub |
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AsicBoost is a method to speed up Bitcoin mining by a factor of approximately 20%. The performance gain is achieved through a high-level optimization of the Bitcoin mining algorithm which allows for drastic reduction in gate count on the mining chip. AsicBoost is applicable to all types of mining hardware and chip designs.Dr. Timo Hanke, March 31, 2016
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Bitcoin is Secure. Bitcoin miners help keep the Bitcoin network secure by approving transactions. Mining is an important and integral part of Bitcoin that ensures fairness while keeping the Bitcoin network stable, safe and secure. Links. We Use Coins - Learn all about crypto-currency. Bitcoin News - Where the Bitcoin community gets news. Bitcoin Algorithm Explained. Founded by a pseudonymous individual or group, Bitcoin is a peer-to-peer digital currency that is designed to serve as a medium of exchange for the purchase of goods and services. With Bitcoin, individuals are able to execute cross-border digital payments at virtually no cost, all without having to involve any financial intermediaries. The process is almost the same as Bitcoin mining, except you use the scrypt algorithm instead of sha256d. There are many other alternative cryptocurrencies to choose from. Notes and references [1] Bitcoin mining seems like a NP (nondeterministic polynomial) problem since a solution can be quickly verified. However, there are a couple of issues ... X11 is an algorithm for mining cryptocurrency which uses 11 different hash functions. X11 algorithm is more complicated than a SHA -256 in Bitcoin, which prevented the use of ASIC miners for a time. Review of X11, ASIC Miners, Mining Pools list and etc. When mining bitcoin, the hashcash algorithm repeatedly hashes the block header while incrementing the counter & extraNonce fields. Incrementing the extraNonce field entails recomputing the merkle tree, as the coinbase transaction is the left most leaf node. The block is also occasionally updated as you are working on it.
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For more information: https://www.bitcoinmining.com and https://www.weusecoins.com What is Bitcoin Mining? Have you ever wondered how Bitcoin is generated? T... This video illustrates the concepts of Hashing, Encryption, Blockchain and Bitcoin Mining by the use of straightforward Python code. It is from a free Webina... Bitcoin and cryptocurrency mining explained with the Byzantine Generals Problem. We use it to explain the essence of cryptocurrency mining. https://www.udemy... Get an additional $10 in Bitcoins from Coinbase when purchasing through my referral link http://fredyen.com/get/Bitcoins Raspberry Pi: http://amzn.to/2l6yrW7... When a Bitcoin Miner Mines, what is happening? Dr Mike Pound exposes the process.. note: at 3:39 Mike mentions a Bitcoin is mined every ten minutes when it i...