First of all what is BITCOIN BTC
a type of digital currency in which encryption techniques are used to regulate the generation of units of currency and verify the transfer of funds, operating independently of a central bank.
On 1 August 2017 bitcoin split into two derivative digital currencies, the classic bitcoin (BTC) and the Bitcoin Cash (BCH)
In 2017, there are 2.9 to 5.8 million unique users using a cryptocurrency wallet, most of them using bitcoin.
Ownership of bitcoins implies that a user can spend bitcoins associated with a specific address. To do so, a payer must digitally sign the transaction using the corresponding private key. Without knowledge of the private key, the transaction cannot be signed and bitcoins cannot be spent. The network verifies the signature using the public key.
Bottema first invested in Bitcoin in 2013, when the digital currency was priced at only $30. Bottema realized that Bitcoin had huge potential and sold all his stocks and liquidated his savings in order to purchase as much of the digital currency as possible.
According to Bottema, he encountered Bitcoin for the first time in 2010. At first he wasn’t interested in the digital currency, believing it to be infeasible. However, he changed his mind after the price of Bitcoin crashed and eventually rebounded.
Source from wiki and cointelegraph