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On December 4th 2021, the Tezos blockchain successfully upgraded by adopting Hangzhou at block 1,916,929. It follows the Granada protocol upgrade four months ago, and will be the eighth Tezos upgrade since Athens’ activation in May 2019.

Introducing TzStamp, a cryptographic timestamping service that uses the Tezos blockchain to prove a file existed at or before a particular time.

In order to minimise the downtime during activation of Hangzhou, we recommend that full nodes import a snapshot within a 24 hours window from the activation block.

Explore some of the properties to consider when choosing an existing algorithm for your blockchain or designing a new one, between censorship resistance, objectivity and synchronicity.

As announced in our previous blog post, a critical bug was found in the implemention of views introduced in protocol proposal PtHangzHo. Through the joint efforts of Marigold, Nomadic Labs, and Trilitech, we have developed a patched protocol PtHangz2a that includes a fix to this bug, as well as several other bug fixes implemented after injection of PtHangzHo.

Consensus algorithms are often described as the key component of blockchain. This is wrong.

A critical bug was found in the implementation of Views in the protocol PtHangzH

Tezos now has an active memory, cache mechanism that can store recently-used information.

The last upgrade of the Tezos protocol, Granada, activated on August 6th, 2021.

The protocol in Tezos is made to be future proof by updating on chain.

In protocol Hangzhou, we introduce a small but powerfulfeature called global constants to address this issue.

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Invented by Xavier Leroy, Zinc is an abstract machine capable of representing any computation.

BLS is a scheme for making digital signature using pairing friendly elliptic curves.

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