It’s a SCAM. please read this ---->
https://blog.coinbase.com/anatomy-of-a-telegram-scam-9fd3dfb8c310Coinbase is not currently participating in cryptocurrency giveaways. Furthermore, any official announcements will be posted on
https://blog.coinbase.com/. We will never host a giveaway on a third party website. Coinbase will never ask you to send digital currency to external addresses for a giveaway under any circumstances. The classic adage, ‘if it’s too good to be true, then it probably is.’ is especially true in the digital currency space.
The existence of Coinbase does not mean that the account is an official account of the company or listed in the official domain.
Many scammers use the names of well-known companies to acquire some legitimacy, so don't be fooled by such scams.
Do not be fooled by this, Certificate of Incorporation means little as Companies House doesn't check the data, and price of issuing that is something like 15 GBP. Ponzi schemes often use that as "proof" that they are legit, that's why so many of those are registered in UK.
It's the first time I know you can get it at this cheap price. Thanks.