Bitcoin mining the hard way: the algorithms, protocols ...

Hey everyone,
I am an amateur programmer, I was wondering if there are any sources of code to start and play around with to create my own mining algorithm.
Any help is appreciated.

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I would appreciate if you explained how I'm wrong. I once wrote a Bitcoin miner (which connects to a stratum mining pool), and have dived quite deep into the math, data structures and algorithms behind Bitcoin, so I think I know what I'm talking about, but I'm always receptive to a well-reasoned explanation of how I'm wrong so that I can learn something new.
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Author: mort96

To any casual reader that had an inkling of doubt that luke-jr is actively hostile to Bitcoin, I present to you a logical proof.
Here and elsewhere, he asserts that the Bitcoin mining algorithm now suffers from the same weakness as IP addresses in the Satoshi whitepaper, because Bitmain has a majority share of the market. Effectively, the argument is that hashpower representation has been subverted by a single interest, Bitcoin is already under a 51% attack, and the answer is to defensively fork to a new PoW algorithm. We are all fairly aware of his position and it is an internally consistent one. It is important, however, to fully articulate the entire argument rather than pick at the individual facets of it, because while the facets are logically sound, it is the premises that are being misrepresented - and I will go on to show that it is internally inconsistent for him to be ignorant of the misrepresentation and still be a Bitcoin user, and the only logical purposes his positions can serve, from his point of view, are with hostile intentions.
First, the core misrepresentation. Let us come back to the Satoshi whitepaper: Proof of Work is a demonstration of a scaled and maintained investment into the security of Bitcoin. As more investments into the decentralized mining network are made, by individual miners deploying hashpower, the system becomes increasingly difficult to subvert. More hashpower means more security, and this is a core fundamental of the functionality of Bitcoin as a fungible store of value. Proof of Work is the innovation that powers Bitcoin. The implementations and respect of, and consensus around, PoW are behavioral; but the idea - the system - is designed to be irreverent to human behavior, and rely only on PoW, and it does so spectacularly. As we say in the engineering field - people fail, systems don't.
Now, it's important to understand that PoW is more than just Proof Of Purchase From Bitmain. This is the misrepresentation at its core - luke implies that hashpower purchased from Bitmain is somehow a point of failure or centralization. This is wholly incorrect, but an easy assumption to overlook when one is presented with the argument in the manner luke prefers to frame it. Bitmain makes the money from the equipment, after all; but it's not the money made that matters to Proof of Work, it's the money spent.
You see, it's not Bitmain operating those miners, it's the purchasers - wide and varied as they are about the globe. Those purchasers are the ones that are invested into the system. Bitmain makes money - and indeed, that revenue model is dependent on growing investment in Bitcoin - but manufacturing equipment by itself does not represent an investment in Bitcoin's security. Mining equipment isn't producing blocks and securing the network until powered and connected to the mainnet - and guess who invests in that? Not Bitmain. Bitmain has no influence on the demand for its products - this is econ 101 guys - and Bitmain's product is mining equipment, not hashpower. Hashpower is produced by mining equipment when the cost of power is paid. You can borrow, buy, or rent the gear; but you always pay for the power - even when cloud mining. This is important because I want to come back to the original comparison between IP addresses and hashes.
IP addresses are very inexpensive to control. Once purchased, they can be freely assigned and used at minimal expense. This makes them a poor choice for security. Hashpower is very expensive to control. After setup, they are a constant maintenance expense and require a continuous investment to maintain. Their purpose is to produce blocks that come with rewards, and those rewards are in turn locked by the system for a short time - ensuring the miners' continued interest in securing their investment negates any potential benefit of, and punishes, hostile behavior. Remember: Proof of Work, not human behavior, secures Bitcoin. A block produced by a Bitmain miner - as well as one produced by any other computing device - is acceptable to the network regardless of the addresses that recover the coinbase reward.
Now note how hostile behavior is treated by the system. If Bitmain-sold hashpower were hostile, or somehow damaging the network, other miners can react appropriately by refusing their damaging blocks. After all, what damages one miner damages all miners, and they have a united interest in stopping it. (failure is not an option, as it renders miners' investments, and by proxy Bitcoin itself, worthless)
See, IP addresses don't have any of these benefits. A simple assertion is not enough; one must prove their vested interest in the security of Bitcoin in order to secure Bitcoin. Our tough customer here either knows this fact, and is intentionally ignoring it when crafting his deceptive arguments, or is genuinely ignorant about the fundamental structure of Bitcoin's security model. If the former is true, his mendacity is a hostile attack on Bitcoin; if the latter is true, and he honestly believes Bitcoin is already compromised, he is not using Bitcoin because he considers it to be insecure - and is thus not a Bitcoin user.
Although, the second option really isn't an option. Clearly, he's fully aware of the technical aspects of the issue; he knows what a hash function is, he knows what a cryptographic proof is, and he understands the process by which blocks are produced. Ignorance of the security model that is serviced by these features is inexcusable at this point - if, by some miracle of human stupidity, he really believes Bitmain somehow controls Bitcoin and yet he controls funds by private key, how can he be trusted at all - for that matter, how could he be trusted if he doesn't? No matter the perspective, his insistence on the position is intent to obstruct. There is no purpose these statements can serve that is beneficial to luke himself or to Bitcoin, even placing him in the position of devil's advocacy for benefit, unless he is personally damaged by forward progress within Bitcoin. He is either obstructing with the intent to damage, or obstructing with the intent to resist progress. Therefore, he can only be actively hostile to Bitcoin in order to produce these statements, regardless of whether they are intentional misrepresentation or misguided assertions.

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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also if you want to mine some bitcoin in your spare time there's lots of free software to do that. my personal favorite is cudo miner cuz it automatically switches to the most profitable algorithm to mine. Here's a link if you're interested [[link]²
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1: *ww.c**om**er.*o*/?a=A*fpG7rg8 2: *w*.cud*mine*.com/?a***fpG7*g8]^^1
Unknown links are censored to prevent spreading illicit content.

I will not describe the charms and shortcomings of service that I've used, you can read one review here or on any other website. Surely if you are on this post - about bitcoin mining you already have some idea and are more likely to find real numbers about it. Well, I have them.
I have been using Hashflare since September 2017.
SHA-256 is Bitcoin's mining algorithm, currently the most profitable of the available algorithms. The most interesting here, of course, is the colossal growth of the bitcoin rate, which has inflated the payback to the skies, 500-600% per year.
The second important point I want to draw your attention to is the daily Hashflare commission. On average, it takes 20-30% of your income. Why is it important to take it here? Yes, because in the reports on profitability in the Hashflare they show the figure without taking into account the commission, that is, it is noticeably overestimated.
The next one is Scrypt, this is the mining Litecoin algorithm. But Hashflare decided not to bother and enigmatic lightcoins convert themselves into bitcoin, and in bitcoins, they also pay a reward. To my taste, not the most honest moment in their work, because the leaps of growth of lightcoin on the yield of Scrypt is not particularly correlated.
Further - ETH. When I only bought power in HashFlare, ETH was the most profitable algorithm with a large margin from all the others.
Then there was the boom of GPU-mining in the world, the complexity of Ethereum network grew, which naturally affected the profitability. For a long time she was hanging out altogether below the 100% mark (that is, the cost of purchasing the contract did not repel herself). Now, with a new jump in the air, everything looks better.
In any case, the contract ETH has long been repulsed and now works in a plus. For all the time, 1.16 coins have been blamed.
I will not write any conclusions on whether to invest in cloud mining, whether it is worth it or it is a bubble that will soon burst. Everyone will make this conclusion by himself. I hope my post will help you in this.