Quote from: 0zero0 on July 17, 2019, 02:15:15 PM

I just found this article on Cointlegraph which said that on July 14 a spam attack was carried on the bitcoin blockchain.

The article is click-bait.

Quote from: 0zero0 on July 17, 2019, 02:15:15 PM

This spam attack turned the bitcoin blocksize from 1MB to 3MB through invalid transactions.

That is impossible.

Quote from: 0zero0 on July 17, 2019, 02:15:15 PM

I knew that spam attacks have previously been performed on the bitcoin blockchain but I never knew it could increase/decrease the blocksize.

The size of a block depends on the transactions it contains. If there are many "spam" transactions, then it will be bigger. BTW, what is a "spam" transaction?

Quote from: 0zero0 on July 17, 2019, 02:15:15 PM

Anyway, since the transactions were invalid and probably got kicked out of the blockchain, it didn't create any impact on the price.

There is no such thing as kicking invalid transactions out of the block chain, and the size of the blocks have no impact on the price.