We can now see Bitcoin in the list of Guinness World Records for a number of entries. The book mentions that Bitcoin is the first decentralized cryptocurrency, the oldest active cryptocurrency, the first blockchain, etc.
Searching "Bitcoin" on the Guinness World Records website, users can learn a lot about the largest cryptocurrency, including how and when it was created, when the first Bitcoin commercial transaction took place, how El Salvador became the first country to make BTC legal tender, etc.
However, there are some argumentative descriptions by Guinness. For instance, about the way transactions are validated. The book says Bitcoin uses the Proof of Work consensus mechanism, which is correct. But then it goes on to say that each node represents a validator also called a miner.
Guinness doesn't mention that the function of a node is validating transactions, but miners carry out a separate function, which is organizing data and producing new blocks, a thing that nodes can't do. Despite this, it's a great thing to see Bitcoin in the Guinness World Records as a digital currency which is the first in many aspects.