Tezos Protocol’s Tallinn Upgrade Completes Successfully, Slashing Block Times and Boosting Network Efficiency

TheNewsCryptoPublished on 2026-01-26Last updated on 2026-01-26

Abstract

Following a successful on-chain governance process, the Tezos protocol has been upgraded to "Tallinn," its 20th forkless evolution. This upgrade significantly reduces Layer-1 block times to 6 seconds, accelerating finality and lowering latency. These improvements complement the network's EVM-compatible Layer-2, Etherlink, which now achieves finality in just 12 seconds. Tallinn also enhances security and staking rewards by enabling all bakers to attest to every block through the use of BLS cryptographic signatures. Furthermore, it introduces an "Address Indexing Registry" that can boost storage efficiency by up to 100x for applications, reducing costs and increasing potential throughput. This upgrade underscores Tezos' commitment to continuous, decentralized innovation, improving speed, security, and enterprise usefulness without network disruptions.

After an on-chain governance process in which bakers (validators) and community members participated widely, the Tezos protocol has been successfully upgraded.

Tallinn, the 20th protocol upgrade developed by Nomadic Labs, Trilitech, and Functori, represents 20 Tezos blockchain evolutions that have been suggested, accepted, and smoothly implemented by the protocol itself.

“Adapting to market demand 20 times over 7 years without network disruptions, and in a fully decentralized way, is undeniable proof of Tezos’ reliability and future-proof design,” said Yann Régis-Gianas, Head of Engineering at Nomadic Labs. ”

The Tallinn upgrade speeds up finality on the network’s censorship-resistant settlement layer and lowers latency by cutting the Tezos Layer-1 block duration to 6 seconds. This goes hand in hand with Etherlink, Tezos’ EVM-compatible Layer-2, which already verifies transactions in less than 50 milliseconds and is now supported by Layer-1 finality in two blocks, or 12 seconds.

Stronger security and more consistent staking rewards are also provided by Tallinn, which allows all bakers (network validators) to attest to every block rather than only a portion of them. BLS cryptographic signatures, which combine hundreds of signatures into a single one each block, are used to accomplish this. It also makes it possible for further block time reductions by reducing the strain on nodes.

Lastly, Tallinn presents the “Address Indexing Registry,” which may increase storage efficiency for apps that use the Michelson runtime by up to 100 times. Apps that use this feature will see reduced expenses and increased potential throughput as it eliminates duplicate address data.

“Based on inputs from Tezos builders, our development team is excited to be able to offer such drastic improvements for enterprise-scale apps, large NFT ledgers, and other setups storing many addresses,” said Yann Régis-Gianas, Head of Engineering at Nomadic Labs.

With each activation, the Tezos blockchain has introduced a number of features aimed at enhancing the overall experience of using and expanding the network. Since its inception in 2018, the blockchain has continued to develop smoothly via protocol upgrades. Tallinn is another forkless step toward improving Tezos’ speed, security, and enterprise-usefulness without sacrificing decentralization. It also serves as another evidence of the network’s capacity to swiftly adjust to user demands and guarantee lifespan via ongoing innovation and optimization.

Tezos is an open-source, energy-efficient blockchain created to enable value transfer in a digital environment and empower organizations, developers, and companies. It is intended enable decentralized applications to be deployed in a scalable manner. Tezos, one of the first Proof of Stake blockchains, is well-liked around the world for its robust governance, long-term upgradeability, and smart contract capabilities. Go to http://www.tezos.com to learn more about Tezos.

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Related Questions

QWhat is the main purpose of the Tallinn upgrade on the Tezos protocol?

AThe Tallinn upgrade aims to speed up finality on Tezos' censorship-resistant settlement layer, reduce block times to 6 seconds, enhance security, improve staking rewards, and introduce storage efficiency improvements through the Address Indexing Registry.

QHow does the Tallinn upgrade improve block finality and latency?

AIt reduces the Tezos Layer-1 block duration to 6 seconds and supports Layer-1 finality in two blocks (12 seconds), working alongside Etherlink, Tezos' EVM-compatible Layer-2, which verifies transactions in under 50 milliseconds.

QWhat cryptographic feature does Tallinn introduce to enhance security and reduce node strain?

ATallinn utilizes BLS cryptographic signatures, which combine hundreds of signatures into a single one per block, allowing all bakers to attest to every block and enabling further block time reductions.

QWhat is the Address Indexing Registry and how does it benefit applications?

AThe Address Indexing Registry is a feature that can increase storage efficiency for apps using the Michelson runtime by up to 100 times by eliminating duplicate address data, reducing expenses and increasing potential throughput.

QHow does Tezos achieve upgrades like Tallinn without network disruptions?

ATezos uses an on-chain governance process where bakers and community members participate widely, allowing for forkless, decentralized upgrades that have been successfully implemented 20 times over 7 years without network disruptions.

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