I studied Computer Science and Engineering at Instituto Tecnológico de Buenos Aires. I'm originally from Buenos Aires, Argentina, currently living in Uruguay.

I cofounded and was formerly CTO at OpenZeppelin. I created Proof of Existence, one of the first non-financial bitcoin apps. I also helped create Decentraland.

For more on what I'm doing now, see my "now" page.

Latest Blog Posts

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  • OpenZeppelin, an open-source library for secure smart contract development in EVM-compatible blockchains.
  • Decentraland, a blockchain-based virtual reality world.
  • Rewilder, a non-profit that coordinates the global purchase of land for wildlife conservation.
  • Proof of Existence, a web service to anonymously and securely store an online distributed proof of existence for any document.
  • Streamium, a p2p livestreaming application using payment channels smart contract for micropayments.

Game development

Miscellaneous interests


avatar designed by Marian. is a variation generated by DALL·E 2.
Icons made by Icomoon, Alessio Atzeni and Pixel perfect, licensed CC BY 3.0.
Theme inspired by Nick Hughes's photo, licensed CC BY 2.0.