Notes

The creation of new bitcoins
There is a limit of 21 million bitcoin that will ever be created. To ensure that this limit is not exceeded and that the bitcoin protocol can create a sufficient number of coins in the future, bitcoins are limited to being produced by a process called "mining". https://cazino-lev-official.ru/ This process requires complex specialized hardware (as of 2015–2016, inexpensive consumer-grade hardware, such as mobile phones and graphics cards, are able to perform bitcoin mining).

Proof of work
The first coin was created on Wednesday, 3 April 2009, by Satoshi Nakamoto, who designed the first version of the source code for a block that contained the first proof of work in the blockchain. This proof of work (PoW) requires miners to find a nonce (a number between 1 and the total number of bitcoins possible- 21 million) in the hash of a block that hashes to a specific target. To be accepted, a block's hash must start with a certain number of zeroes. In the 2016-2017 version, the PoW is highly tunable. The block reward had been 12.5 coins per block until October 2012, when the blocksize limit was increased to 1 megabyte; mining contracts could still provide a block reward of 50,000 bitcoins if desired, to incentivize miners to create a block in just six hours. In 2015, the block size limit was increased to 2 megabytes, providing a block reward of 25 bitcoins. After the block reward changes in November 2015, the halving event occurred in mid-2016, when the reward was cut in half. Since the earliest recorded creation of an XMR in 2009, the reward for discovering a block (assuming a 100-block generation time, producing one coin per hour) was at least 259.6 million XMR. This reward was halved to about 126 million XMR in 2015, to about 63 million XMR in 2016, to about 31 million XMR in 2017, and eventually to about 15 million XMR in 2018, in about one year from the time of halving. This halving event of the XMR reward is critical to the incentive for miners to keep the blockchain secure. If a miner were to produce a block but have it not be accepted by all miners (for example, if the block is found, but the majority of the network rejects it), the reward for that block is lost. Thus, the protocol is designed so that the difficulty increases rapidly after the reward halves (double the difficulty in four years) to prevent
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