Recent posts

The “business blockchain” vision evolves but is still flawed

The Bitcoin-to-Blockchain-to-Bitcoin cognitive cycle is usually the following: Step 1 – Wow Bitcoin is a cool and powerful system Step 2 – Let’s copy the Bitcoin design to manage all the things! Step 3 – Hum private permissioned blockchains are useless (the same services can always be delivered faster, cheaper and with the same security […]

La provenance n’est pas un cas d’usage de la blockchain

Le sophisme de la blockchain La “chaîne de blocs” (ou “technologie de registre distribué”) est une base de données distribuée, utilisant des algorithmes cryptographiques et des blocs de données formant une chaine. Vraiment? Si vous utilisez cette définition vous êtes coupable de sophisme car cette définition est aussi large que la notion de “logiciel” et […]

Supply chain is obviously not a blockchain use case

If by “a blockchain” (or “a distributed ledger”) you mean “a distributed data store using cryptographic functions and blocks of data chained together” then it basically means “software technology” and indeed pretty much everything can be digitized with software. It also means that people have been developing “blockchains / DL” for decades.  It’s a fallacy. […]

Aller au-delà des effets d’annonce sur la blockchain

Opinion publiée sur Capital (en Français / in French) Société Générale a annoncé avoir écrit et exécuté un contrat sur la blockchain Ethereum. Pour être clair, j’applaudis la SocGen pour ce test innovant ainsi que pour le coup marketing. Je souhaite ici réagir aux commentaires exubérants de certains analystes, et éclairer les enjeux de ce type […]

Why people get blockchains so wrong

The “blockchain magic” piece I wrote in 2017 is still topical. Every single day the public is exposed to delusional articles about how “blockchains” and “distributed ledgers” are going to revolutionize some new business areas. The main reason why there is so much fake news about blockchains is that “blockchain technology” does not actually exist. […]

What are distributed ledgers (actually) good for?

This is a presentation I gave to VCs and Finance executives in New York in January 2019: