Selected Praise

Some nice things people have said about my work. Listed below in reverse chronological order.

The Bitcoin Optech newsletter is the second big project under the Bitcoin Optech umbrella. Produced by technical writer David Harding and counting 84 editions at the time of writing, the newsletter continues to accumulate a wealth of information, containing high-quality technical documentation and offering an ongoing overview of developments across Bitcoin and Lightning implementations.

Among the more notable efforts carried out through the newsletter, Harding wrote a 24(!)-part series on bech32 sending support, encouraging wallet providers and companies to implement the option to send funds to bech32 addresses

—Aaron van Wirdum,
Writer for Bitcoin Magazine,
2020-02-18 (source)

The Bitcoin Optech weekly newsletter is *the best* way to learn about the technical developments in the ecosystem. Dave Harding is a word wizard that makes it accessible to stay up to date. I highly recommend subscribing.

—Amiti Uttarwar,
Bitcoin Engineer, Xapo,
2020-02-07 (source)

Thank you @hrdng for this and the 50 other newsletters this year. You are one of a kind.

—Adam Jonas,
Special Projects, Chaincode Labs,
2019-12-29 (source)

As usual, stellar writing by @hrdng and @bitschmidty!

—Max Hillebrand,
Free software entrepeneur,
2019-11-20 (source)

This newsletter marks the end of a TWENTY FOUR WEEK run at providing educational and motivational content for bech32 native segwit adoption. Incredible work by @hrdng. See all 24 weeks at a glance here:

—Steve Lee,
Product Manager, Square Crypto,
2019-08-28 (source)

Once again I enjoyed @bitcoinoptech newsletter by @hrdng. This is the most informative and best resource and overview for developers and educators. I think @hrdng gets paid for doing this newsletter but every week it feels like it’s coming directly from David’s heart! Thank you!

—Rene Pickhardt,
Data Scientist,
2019-04-23 (source)

I’m super happy that David Harding wrote the foreword of Grokking Bitcoin! Thank you @hrdng for writing it and for everything you do to enlighten people.

—Kalle Rosenbaum,
Author of Grokking Bitcoin,
2019-04-16 (source)

David Harding was exceptional in his technical review of this book. He reviewed the text three times, with a lot of great comments. He’d better write a book about Bitcoin at some point, because he has an encyclopedic knowledge of nearly everything that’s happened in Bitcoin’s history.

—Jimmy Song,
Author of Programming Bitcoin,
2019-03-02 (source)

This is a must-read year-in-review. I’ve never encountered a year-in-review that not only summarizes the year, but simplifies explanations of complex topics, furthering understanding. Phenomenal year of writing contributions by @hrdng and thorough reviews by @jfnewbery!

—Steve Lee,
Product Manager, Square Crypto,
2018-12-28 (source)

And @hrdng? He just gives his time and expertise away for free, as he has been doing for years, because he’s a treasure and one of the most important and generous contributors in Bitcoin.

—John Newbery,
Director for Bitcoin Optech,
2018-11-03 (source)

Dave Harding […] is one of the most knowledgable, humble, and eloquent OG Bitcoiners out there.

—Pierre Rochard,
Founder, Bitcoin Advisory and co-host of the Noded Podcast,
2018-06-28 (source)

This manuscript benefited immensely from the help, guidance, and technical expertise of Bitcoin [contributor] David Harding, who has an admirable gift for communicating complex technical topics effectively.

—Saifedean Ammous,
Author of The Bitcoin Standard,
2018-04-24 (source)

David is one of the BEST

—Miles Suter,
Developer, Cash App,
2018-03-26 (source)

David Harding (@hrdng) visualized the benefits in the graphic below which comes from his phenomenal post here that I highly recommend:

—Spencer Bogart,
General Partner at Blockchain Capital.,
2018-03-04 (source)

Tweeting out this article from @hrdng on the Bitcoin wiki about techniques to reduce #bitcoin transaction fees again because you should read it

—Kyle Torpey,
Writer for Bitcoin Magazine and other publications,
2018-01-30 (source)

Best overview so far of proposed MAST upgrade to Bitcoin by @hrdng. It allows for smaller, more sophisticated smart contracts & greater privacy thus more fungibility.

—Christopher Allen,
Co-author of the TLS Security Standard,
2018-01-10 (source)

If you’ve been wondering what Lightning Network Channel Factories might be, @hrdng graced us with a kickass overview here

—Mark (Murch) Erhardt,
Community-elected moderator for the Bitcoin StackExchange,
2018-01-01 (source)

In case you missed it, like @brian_armstrong and @coinbase did, @hrdng wrote a fantastic article on saving money through Bitcoin payment batching back in August. Highly recommended read!

—Michael Goldstein,
President, SNI,
2017-12-26 (source)

@hrdng has published an excellent article showing how exchanges could save up to 80% of fees and 75% of space by just batching their withdrawals.

—Laurent MT,
Creator of the OXT block chain explorer,
2017-12-22 (source)

David Harding is one of the most concise thinkers I’ve encountered in this space and his knowledge is invaluable. If you want to take a deep dive into some of the technical aspects of Bitcoin and Ethereum, join our friends Pierre Rochard and Michael Goldstein as they sit down with David to talk shop for ~45 minutes.

Author of Marty’s Bent (newsletter) and host of Tales From The Crypt (podcast),
2017-11-16 (source)

A LOT of information here. Thank you for the articulate explanations, David!

—Janey Gak,
2017-11-15 (source)

Great explanation from @hrdng on what happens once #SegWit is activated. All facts are presented in a simple & straightforward manner.

—Samson Mow,
Chief Strategy Officer, Blockstream,
2017-03-17 (source)

The author is grateful for […], and David A. Harding for his outstanding contributions to and the Bitcoin Developer Guide.

—Mark (Murch) Erhardt,
Community-elected moderator for the Bitcoin StackExchange,
2016-11-01 (source)

This is great work David, thanks!

—Tuur Demeester,
Founding Partner at Adamant Capital,
2016-05-30 (source)

Nice article by @hrdng explaining by analogy “why contentious hard forks are to be avoided”

—Adam Back,
Inventor of Hashcash and President of Blockstream,
2016-01-29 (source)

@harding: Thank you for all of the amazing work you have done!

—Andreas M. Antonopoulos,
Author of Mastering Bitcoin,
2015-11-16 (source)

IMO you did a better job describing the [BIP65] changes then I did in git master

—Peter Todd,
Author of BIP65,
2015-11-08 (source)

David Harding is a little known but important contributor to Bitcoin. He’s done fantastic work on the developer guide.

—Mike Hearn,
Original author of the BitcoinJ library,
2015-06-16 (source)

@harding That is a huge change, thank you so much for your work on this!

—Saïvann Carignan, Site Maintainer,
2015-04-09 (source)

Just now I found out that David Harding wrote an excellent guide on setting up and running a #bitcoin full node:!

—Wladimir van der Laan,
Bitcoin Core Lead Developer,
2015-03-25 (source)

@harding thank you! good catch!

—Lawrence Nahum,
GreenAddress Wallet Lead Developer,
2015-02-06 (source)

Nice work!

—Jonas Schnelli,
Bitcoin Core GUI Developer,
2015-01-26 (source)

Wow; great work.

—Jameson Lopp,
Statoshi Lead Developer,
2015-01-19 (source)

Awesome, thanks for writing this down!

—Andreas Schildbach,
Bitcoin Wallet for Android Lead Developer,
2015-01-15 (source)