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Home News Blockchain Tezos’ 12th Upgrade Delivers a Leaner and More Secure Blockchain

Tezos’ 12th Upgrade Delivers a Leaner and More Secure Blockchain


Tezos, one of the original Proof of Stake blockchains, has activated the 12th upgrade to the protocol, “Lima,” which was voted upon and approved by the Tezos community. The new upgrade enables increased throughput, introduces a highly-requested feature for validators, and reduces the risk of bugs in smart contracts. 

The energy-efficient Tezos is well-known as the “self-amending blockchain” for its ability to seamlessly upgrade through its on-chain governance – a mechanism which allows network participants to propose and vote on upgrades and changes to the protocol. The Lima upgrade marks the fourth protocol upgrade in 2022 alone. 

Here is a breakdown of key improvements to Tezos functionality in Lima, according to development team Nomadic Labs (working in conjunction with all contributors to the Lima Upgrade): 

  • More pipelining, faster blockchain –  The Lima protocol continues the ‘pipelining’ validation project, which speeds up the processing of blocks and operations. It does so by separating validation – lightweight checks such as assessing the correctness of cryptographic signatures, or having sufficient funds to pay fees – from application – which executes the full contents of a block, notably computationally expensive operations such as smart contract calls.
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Now, a newly received block is only validated before it is forwarded to other peers. This feature speeds up block propagation on the network and is an important step towards reducing block times to 15 seconds and increasing overall Layer 1 throughput on Tezos.

  • Introducing consensus keys – The introduction of consensus keys will allow validators, known as bakers in the Tezos ecosystem, to designate a special key (separate from the baker address key) for signing blocks and consensus operations. In situations where bakers must change their node setup due to security concerns or technology upgrades, this new feature enables bakers to simply change their consensus key without changing their public address. This means they no longer lose delegators due to a change in setup or need to coordinate with delegators off-chain to move them to a new address.
  • Improvements to tickets – Tickets are a type of data unique to the Tezos smart contract language, and a foundation to scalability solutions, that enable many use cases around tokenization, voting, authentication, and more. Lima deprecates the creation, storage and transfer of zero-amount tickets, reducing the risk of bugs in smart contracts. 

Tezos is one of the leading original Layer 1 blockchains to utilize staking to secure its network and has a proven record of security and scalability. Tezos requires significantly less energy and cost to operate, making it an ideal alternative platform for building eco-friendly blockchain applications. 

As a trailblazer for Proof of Stake blockchains, Tezos has experienced rapid adoption and significant growth in developer activity in 2022, with smart contract deployment up 288% compared to the same period in 2021, and was also listed among the largest developer ecosystems, according to the annual Electric Capital Developer Report.

Additionally, the Lima update finalizes development work towards Smart Rollups, an innovative Layer 2 scaling solution, expected to debut in the subsequent upgrade proposal. Thanks to smart rollups, Tezos core developers aim to achieve up to 1,000,000 transactions per second (TPS), and a public test of this capability is planned for early 2023.

Past upgrades have enabled significant improvements to Tezos functionality that include: 

  • Hangzhou: Introduced several improvements such as views which give smart contracts the ability to read the storage state of other smart contracts, timelock encryption to serve as a countermeasure against Block Producer Extractable Value, caching to provide faster access to lower gas costs to data that is accessed regularly
  • Ithaca: Introduced Tenderbake, a new Tezos consensus algorithm, which enables fast finality and improved scalability for the Tezos blockchain
  • Jakarta: Introduced Transaction Optimistic Rollups (TORUs), an experiment into enshrined rollups, leading to increased throughput, lower fees, and a pathway to significantly increased long-term scalability
  • Kathmandu: Enabled smart contract optimistic rollups on bleeding edge testnets, preparing the protocol for the future full integration of Smart Rollups, and introduced the first steps of pipelined block validation.

Tezos, with its ability to upgrade and innovate in an energy-efficient way has become an appealing choice for leading organizations that are expanding their reach into Web3. World-renowned organizations and brands Manchester United, McLaren Racing, Team Vitality, The Gap, Evian, and more, are currently building their fan and customer experiences on Tezos. 

Tezos continues to see rapid growth as the blockchain of choice especially among artists and NFT platforms. Moreover, Tezos was the only blockchain with a presence at the recent 2022 Art Basel Miami Beach, where prominent generative artists featured their work minted on Tezos. 

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