Needs a `# github.com/bitcoinxt/bitcoinxt was verified as official when first introduced to the cask` comment above this line ([example](https://github.com/caskroom/homebrew-cask/blob/4ad02c9f087deb9e553ab0129c079d73c474add8/Casks/0ad.rb#L5); [reasoning](https://github.com/caskroom/homebrew-cask/blob/master/doc/cask_language_reference/stanzas/url.md#when-url-and-homepage-hostnames-differ-add-a-comment)). 