About Dan Shaffer

Dan Shaffer is a data engineer and the founder of 4D4 Labs, a boutique data engineering studio in Cleveland, Ohio. Over fifteen years, he has designed data pipelines, automation systems, and analytics platforms across healthcare, finance, ecommerce, and government. His consulting work with government-facing clients gave him an intimate view into the mechanisms and statutes behind property tax systems, from California's supplemental assessments to Florida's tax certificate auctions.

Before any of that, he managed a Domino's Pizza in Ohio. He knows what it feels like to work for a paycheck that the tax system hits before you see it.

The Last Tax started as an engineering question: if counties can track every acre of land, and banks can value every asset they lend against, why does the federal tax system pretend it cannot see wealth? With all the advantages brought forward by blockchain and distributed ledger technology, it became clear that the answer was structural rather than technical. He could not leave it alone. This book is the result.

He lives in Cleveland with his wife and child.