PayPal 也要提供加密貨幣服務

先是看到「PayPal to allow cryptocurrency buying, selling and shopping on its network」這篇,另外翻到了 PayPal 的新聞稿:「PayPal Launches New Service Enabling Users to Buy, Hold and Sell Cryptocurrency」。

幾個比較重要的地方是,這次會提供的是 BitcoinEthereumBitcoin Cash 以及 Litecoin 這四種:

To increase consumer understanding and adoption of cryptocurrency, the company is introducing the ability to buy, hold and sell select cryptocurrencies, initially featuring Bitcoin, Ethereum, Bitcoin Cash and Litecoin, directly within the PayPal digital wallet.

會先提供美國 PayPal 的使用者使用,然後再展到其他服務以及地區:

The service will be available to PayPal accountholders in the U.S. in the coming weeks. The company plans to expand the features to Venmo and select international markets in the first half of 2021.

另外這次的服務也不是自己跳進去搞,而是透過 Paxos Trust Company 建立起防火牆,所以當加密貨幣那邊出包的時候大概就會切割出來:

The service is enabled in the U.S. through a partnership with Paxos Trust Company, a regulated provider of cryptocurrency products and services.

比較像是個嘗試,只是這個主題很適合發新聞稿...

Leslie Lamport 講 Paxos 與 TLA+

在「The Paxos Algorithm or How to Win a Turing Award」這邊看到 Leslie Lamport 在今年七月時親自講解 Paxos 這個經典演算法的錄影。另外一個有提到的主題是講形式規範的 TLA+,也是他的力作...

Leslie Lamport 是 2013 年的 Turing Award 得主,除了上面提到的事蹟外,LaTeX 也是他弄出來的東西,軟體名稱開頭的 La 就是他本人...

花些時間聽看看還不錯 (去聽看看他怎麼描述),不過現在的新軟體比較常實做 Raft,Paxos 比較少人選擇了...

Leslie Lamport 拿下 2013 年圖靈獎 (Turing Award)

Leslie Lamport - A.M. Turing Award Winner

For fundamental contributions to the theory and practice of distributed and concurrent systems, notably the invention of concepts such as causality and logical clocks, safety and liveness, replicated state machines, and sequential consistency.

分散式系統領域的老大與 LaTeX 的發明人...