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Bitcoin also uses a widely-published “peer-to-peer distributed timestamp server” to verify that the digital coins have not been “double spent”—in other words, counterfeited. A timestamp records the exact time that a Bitcoin is created or a transaction from one user to another occurs. These timestamps are aggregated into a master list of transactions involving a particular Bitcoin file—similar to a chain of title—called a “block chain.” The block chains of each Bitcoin are available to all users on a network, and are updated with every subsequent transaction. Because block chains involve an enormous amount of data regarding previous transactions, the timestamp servers make it incredibly difficult to forge a block chain. In that sense, the timestamp server helps guard against Bitcoin fraud.
Cause, you know, enormous amount of data, is like, difficult to copy. Or something. Also, the author thinks there are multiple blockchains, one for each "individual" Bitcoin (which, I guess, he thinks is an indivisible unit of currency).
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Bitcoins are stored as electronic files on a computer’s hard drive ... Bitcoins are computer files, similar to a music or a text file
So, author doesn't understand the difference between Bitcoins and private keys giving access to Bitcoins.
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Each Bitcoin transaction uses public-key encryption to ensure the transacting parties’ privacy ... public ledger records which Bitcoins have been spent or accepted but does not record the identifying information of the transacting parties, thereby securing users’ anonymity.
That's not what the public-key encryption is for, and no, Bitcoin does not "secure users' anonymity". Even before 2014 there were studies on de-anonymizing Bitcoin users, but I guess if the author didn't even read Nakamoto's paper, can you expect him to read those?
