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Halo: Recursive Proof Composition without a Trusted Setup

Sean Bowe, an engineer and cryptographer at Electric Coin Company (ECC), has discovered a technique for creating practical, scalable and trustless cryptographic proving systems, ending an almost decade-long pursuit by

Reducing Shielded Proving Time in Sapling

Since the successful Sapling network upgrade, we have already seen an increased adoption of shielded addresses in the Zcash ecosystem. Services like mining pools are beginning to offer shielded address

Reinforcing the Security of the Sapling MPC

The engineering and cryptography team at Zcash makes very large efforts to minimize risk. This is always a positive thing, but perhaps even more crucial when using very new cryptography.

Ethereum Adoption of zk-SNARK Technology

The Ethereum Metropolis (Byzantium) upgrade adds a new cryptographic tool (zk-SNARKs) that was pioneered by Zcash. The addition of zk-SNARK technology into Ethereum is another validation, like the JP Morgan

Cultivating Sapling: Faster zk-SNARKs

Zcash’s next major upgrade, codenamed Sapling, will feature a set of groundbreaking performance improvements for our shielded transactions. In the last blog post of this series, we talked about a

Cultivating Sapling: New Crypto Foundations

Zcash’s next major protocol upgrade, codenamed Sapling, will feature a number of improvements to the performance, security and usability of our shielded transactions. This is the first in a series

Pay-to-sudoku Revisited

Last year, I created a project called pay-to-sudoku which was the world’s first implementation of a zero-knowledge contingent payment (ZKCP). ZKCPs were invented in 2011 by Gregory Maxwell, and are