The Truth Machine

The implied sequel to The Age of Cryptocurrency, but with a deliberate pivot: where the first book was about Bitcoin, this one is about "blockchain technology" — supply chains, identity, land registries, governance, the whole enterprise-blockchain wave that briefly looked like it would matter independently of crypto. It was a reasonable bet in 2018. With seven years of hindsight it looks more like a snapshot of an idea that mostly didn't work out.

Who it's for

Readers who want to understand the "blockchain not Bitcoin" moment of 2016-2019 on its own terms — what its proponents claimed, what enterprises actually tried, and why almost all of it has quietly disappeared. Useful as period reading for anyone trying to figure out why crypto people sneer at the phrase "enterprise blockchain."

What it does well

Vigna and Casey are still working journalists, and the reporting holds up. The chapters on the early Hyperledger and R3 efforts, on Walmart's supply-chain experiments, on the Estonian e-residency programme, and on land-titling pilots in the developing world are careful, sourced, and refreshingly free of marketing. They're also a useful corrective for crypto natives who assume that nothing of consequence ever happened on the enterprise side.

The framing chapters on trust, on identity, and on the political stakes of who controls a ledger are good — better, actually, than most of the technical chapters, because the authors are better at people than at protocols.

Where it falls short

The thesis hasn't aged well. Most of the non-public-blockchain experiments described as "promising" in 2018 have been wound down or quietly pivoted, and the book never quite reckons with the possibility that this would happen. The crypto half — the bits about ICOs, smart contracts, Ethereum's governance — is also less sharp than what Shin would later do in The Cryptopians.

You'll come away with a clear picture of what people hoped blockchain would do in 2017-2018, and a fuzzier picture of what it actually became. Worth reading as history, less so as a guide to where things are now.