instruction:
Given a document, find the main entity about whom the author is writing. Write the full name if mentioned in the text. Note that URLs in the text have been replaced with [Link].
question:
Bitcoin hit a record high of $16 623 per coin on Thursday  December 7. Two years ago  the idea of buying the virtual currency even at that price was laughable. After a rapid rise in value in 2013  the cryptocurrency's value more than halved by mid-2015. At its lowest point  one bitcoin was equal to about $230. Given the currency's covert nature  the average person still may not understand how buying and selling actually works. Using the app Coinbase  which lets anyone trade bitcoins for a small fee  we decided to find out. A brief warning: If you're going to do this  tell your bank you're about to buy bitcoin. More on that later. And to read more about blockchain  the technology powering bitcoin  click here. View As: One Page Slides
This is what the Coinbase app looks like on an iPhone.
However  Coinbase's interface makes it simple to enter the basic personal information it needs to create your account.
The final step before entering my financial information was two-step verification for security  which  Coinbase  quickly sent to my phone.
To sell the bitcoin   Coinbase  only allows users to pair  their  bank account with the app; a credit or debit card won't suffice.
Since  Coinbase  wasn't linked to my bank account  the transaction needs a few days to process before the money is transferred.
answer:
Coinbase


question:
Justice Department special counsel Robert Mueller broke his own record this week for guilty pleas. On Tuesday  Dutch attorney Alex van der Zwaan appeared in federal court and admitted he had lied to investigators about his contacts with  Donald Trump's former campaign vice chairman  Rick Gates .
On Friday   Gates himself  appeared before a federal judge and confirmed that  he  is changing  his  plea to guilty.  He  had been fighting the case brought against  him  and the former Trump campaign chairman  Paul Manafort  which alleged they laundered millions of dollars and broke other laws related to their work for clients in Ukraine.
 Gates  and Manafort have not been charged with conspiracy to defraud the U.S. by "impairing  obstructing and defeating the lawful functions of the government through fraud and deceit for the purpose of interfering with the U.S. political and electoral processes." That was the charge Mueller leveled at 13 Russians and three Russian companies he says did interfere with the election.
Or the special counsel's office could be laying down one brick in a larger structure. At the very least   Gates'  future testimony against  his  longtime business partner raises the likelihood that Manafort could be convicted of some or all of the charges  he  continues fighting.
Manafort and his lawyers know this. So one of Mueller's strategies in getting  Gates  to turn state's evidence might be to persuade Manafort to do the same and tell what he knows about other people in the Trump campaign orbit.
Or evidence from  Gates  might be what the special counsel's office needs to build a case against Manafort for conspiring in the 2016 Russian interference effort. Or  after years of working with Manafort   Gates  might have other evidence that would permit Mueller to bring new charges against Manafort.
Mueller announced a new indictment in Manafort's case on Friday evening. After  Gates  appeared in federal court Friday to enter his plea  Manafort continued to maintain his innocence and said he remained committed "to defend myself against the untrue piled up charges contained in the indictments against me."
answer:
Gates


question:
Kyle Enos  25   was sentenced to eight years in prison for selling drugs.
 He  traded fentanyl  a powerful opiate  for bitcoin to anonymous buyers.
 Enos  posted doses in envelopes at  his  local Post Office in South Wales.
Police released the text of  his  dark web sales pitch after  his  sentencing.
This is how  drug dealer Kyle Enos  attracted customers to  his  online opiate store  trading drugs for cryptocurrency on the dark web.
 He  traded in fentanyl  the powerful painkiller that can be 50 times as strong as heroin and which contributed to Prince's death  by offering customers supermarket-style "buy one get one free" deals in exchange for bitcoin.
Police also released footage from  Enos 's custody interviews  in which he describes how the drug operation works.
 Enos  told officers  he  did not make fentanyl himself  but ordered the substance in bulk every few weeks and sold smaller doses to individual customers.  He  used  his  local Post Office in Newport  South Wales  to ship the drug in envelopes.
They communicated anonymously over the dark web   he  said  in exchange for bitcoin. The footage does not give any sense of how much money  he  was making.
The text from  Enos 's storefront is in some ways very prosaic â  he  has a summary of delivery times  offers refunds and guarantees and emphasises the quality of  his  customer service.
However  the illicit nature of the exchange is also obvious from  Enos 's pre-emptive warnings about keeping receipts: Customers needed to be reassured that their information would not be preserved in case  Enos  were ever caught  which  of course  is exactly what happened.
answer:

Kyle Enos