The Square Cash app, an app to send and receive the fiat currency of the mobile payment company Square , has now made Bitcoin trading (BTC) available for almost all of its users, with the exception of those in New York, Georgia, Hawaii and Wyoming.

Jack Dorsey, CEO of Square and Twitter, announced the news in a tweet on January 31. A short comic entitled "My First Bitcoin", explaining Bitcoin to newcomers to the industry.

The instant purchase (and sale, if you do not want hodl) of Bitcoin is now available for most Cash App customers. We support Bitcoin because we see it as a long-term path to better financial access for all. It's a small step. We also did that! https://t.co/z3u0liDNk4 – jack (@jack) January 31, 2018

Since Square operates on a Point of Sale (PoS) network, the addition of BTC to its services Mobile means in the future any merchant who uses Square's payment system will potentially be able to accept Bitcoin as a payment method.

Although the company states that it will not add any additional transaction fees for the purchase and sale of BTC on the Cash application, the "cash discount". application calculates the price at which you can buy and sell from the average market price, an average on the main stock exchanges. According to the Square website, users will be allowed to buy up to $ 10,000 in BTC per week, while there is no sales limit.

Square had already announced in November 2017 that it would release a BTC trading option to a select 3 million customers, which boosted their stock by $ 1 billion in five days. Since the announcement, Square's stock had risen more than 3% when it closed on Wednesday, Jan. 31.

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Jack Dorsey, CEO at both Square and Twitter, tweeting on the larger version today, included a link to a short cartoon, made by Square, on the history of Bitcoin:

https://twitter.com/jack/status/958743238512328704

The cartoon, titled "My First Bitcoin and the Legend of Satoshi Nakamoto", ends with a warning for users to take "Judicious Financial Decisions" Due to Bitcoin Price Volatility.

Square's announcement comes shortly after Robinhood, another trading app, announced that it would begin to allow to Bitcoin and Ethereum trader users free of charge from February.

Coinbase, which fee transaction fee, but has more users than the brokerage firm Charles Schwab, has long been considered the most reliable exchange for crypto trading. With the addition of Robinhood and Square to the crypto trading sphere, with already more than 1 million users on the waiting list for Robinhood's crypto trading platform, it is clear that the crypto application market is moving in a less centralized direction.