Post-Trust In spite of being definitely public, or rather due to the fact that of that reality, Bitcoin is very challenging to tamper with. A bitcoin has no physical existence, so you can't secure it by locking it in a safe or burying it in the woods. In theory, all a burglar would need to do to take it from you would be to include a line to the journal that equates to "you paid me whatever you have." A related concern is double-spending.
To accomplish a double-spend the bad star would need to make up 51% of the mining power of Bitcoin. The bigger the Bitcoin network grows the less practical this ends up being as the computing power needed would be huge and very expensive. To further avoid either from taking place, you need trust.
Bitcoin has made that unnecessary, nevertheless. (It is most likely not a coincidence Satoshi's original description was published in October 2008, when trust in banks was at a multigenerational low. This is a repeating style in today's coronavirus climate and growing federal government financial obligation.) Rather than having a reputable authority keep the ledger and administer over the network, the bitcoin network is decentralized.
Nobody needs to know or trust anyone in particular in order for the system to run properly. Presuming whatever is working as meant, Research It Here that each block of transactions is bolted onto the last in a long, transparent, and immutable chain. Mining The procedure that maintains this trustless public ledger is referred to as mining.
Recording a string of deals is minor for a modern computer system, but mining is challenging because Bitcoin's software application makes the process artificially lengthy. Without the added problem, people might spoof deals to improve themselves or bankrupt other individuals. They might log a fraudulent deal in the blockchain and stack a lot of insignificant deals on top of it that untangling the scams would end up being impossible.