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preface.asciidoc

@@ -104,24 +104,6 @@ Please address comments and questions concerning this book to the publisher:
 
 We have a web page for this book, where we list errata, examples, and any additional information. You can access this page at link:$$http://bit.ly/mastering-bitcoin-2e$$[].
 
-=== How to Contact Us
-
-Please address comments and questions concerning this book to the publisher:
-
-++++
-<ul class="simplelist">
- <li>O’Reilly Media, Inc.</li>
- <li>1005 Gravenstein Highway North</li>
- <li>Sebastopol, CA 95472</li>
- <li>800-998-9938 (in the United States or Canada)</li>
- <li>707-829-0515 (international or local)</li>
- <li>707-829-0104 (fax)</li>
-</ul>
-++++
-
-We have a web page for this book, where we list errata, examples, and any additional information. You can access this page at link:$$http://bit.ly/mastering_bitcoin$$[].
-
-
 To comment or ask technical questions about this book, send email to pass:[<a class="email" href="mailto:bookquestions@oreilly.com"><em>bookquestions@oreilly.com</em></a>].
 
 For more information about our books, courses, conferences, and news, see our website at link:$$http://www.oreilly.com$$[].