Bitcoin blockchain attacked, PoW algorithm proved reliable

Today on Twitter one of the users wrote that yesterday someone tried to transferin the Bitcoin blockchain there is a block with one «0». In this way, he tried to deceive the PoW (Proof-of-Work) protocol.

“#bitcoin is under attack: someone tried twice to transfer incorrect blocks that only start from zero…

Glad my node immediately rejected this joker! ”

#bitcoin under attack:
twice someone tries to broadcast a bad block (proof of work failed: blocks start with only one zero .. 15 min later with not enough zero’s).

Glad my node rejects this joker immediately! pic.twitter.com/3yPEsTp91J

- Plan₿ (@ 100trillionUSD) October 13, 2019

The message says that an error has been detectedin a user node built on the Raspberry Pi and using a 500 GB SD card as storage so that there are no problems using it 24/7.

The Bitcoin blockchain uses consensusPoW (Proof-of-Work) protocol. This protocol is used to search for a line of code that begins with several zeros, around 19: these zeros reflect the complexity of the calculation and, as a consequence, the security of the transaction.

If a bitcoin transaction has only one 0 oreven a couple, as in this case, we can easily conclude that it took a little time to calculate the hash, and therefore there is a 99% chance that it was an attempt to attack bitcoin and push through an incorrect transaction.

Fortunately, the transaction was rejected by the specifiednode. This is a good example of how Bitcoin (BTC) and the PoW (Proof-of-Work) protocol proved to be resistant to any type of attack, even differing from the most famous 51% attack.

</p>