Tezos (XTZ) Live Price and charts Today

Kathmandu

Enabled smart contract optimistic rollups on bleeding edge testnets, preparing the protocol for the future full integration of SCORUs. Introduced the first steps of pipelined block validation, aiming to streamline the block validation process. Implemented improved randomness with VDFs, event logging in smart contracts, and more.

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. Introduced improvements to tickets and sapling, enabling improved network privacy features and increased decentralization for Tezos tokens.

Ithaca

Introduced Tenderbake, a new and significantly upgraded Tezos consensus algorithm, which enables fast finality and improved scalability for the Tezos blockchain. Introduced a variety of other changes that improve the baking experience, such as reducing the amount of tokens required to be a validator, a rework of the baking and endorsement rewards mechanism, and more.

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 at lower gas costs to data that is accessed regularly, and a global table of constants to facilitate development of more complex smart contracts.

Granada

Introduced Liquidity Baking, which mints a small amount of tez every block and deposits it inside of a constant product market making smart-contract. This incentivizes large amounts of decentralized liquidity between tez and tzBTC. Included several improvements that led to a 3-6x decrease in gas consumption of popular contracts.

Florence

Doubled maximum size of operations, which more than doubled the maximum size of smart contracts. Furthered gas optimizations as well as sped up gas arithmetic by a factor of ten. Enabled more intuitive smart contract development by adopting depth-first execution order. Deactivated unused Test Chain in the Economic Protocol, resulting in more streamlined amendment process.

Edo

Added Sapling and BLS12-381 to enable privacy-preserving smart contracts and tickets for native permissions. Updated amendment process by lowering period length to 5 cycles and adding a 5th Adoption Period.

Delphi

Improved gas costs. Reduced storage costs by a factor of 4 to reflect improvements in the underlying storage layer

Carthage

Tezos holders voted overwhelmingly in favor of implementing the Carthage 2.0 upgrade. The Carthage proposal was a joint effort by crypto research outfits Nomadic Labs and Cryptium Labs to help add some code optimizations and fix a few "small issues." In particular, the upgrade will increase the gas limit for each block and operation by 30%, which allows developers to run more complex applications. Carthage also aims to improve the accuracy and security of calculating baking rewards (especially concerning endorsement rewards). On the security front, the more robust design could hinder selfish-mining like attacks from non-cooperative bakers, which a former Harvard researcher previously revealed as a possible attack vector on Tezos.

Babylon

Tezos’ on-chain governance system voted in favor of the Babylon 2.0.1 proposal, which was automatically activated when the voting period concluded on Oct. 18, 2019. The new upgrade introduced a more robust version of the blockchain’s consensus algorithm (Emmy+), simplified smart contract development, and refined the delegation process. The Babylon vote also marked a new all-time high in participation in votes submitted (59,967).

Athens

Athens was an upgrade proposal created by developer group Nomic Labs. The research outfit submitted two competing proposals in the submission stage: Athens A, which increased the gas limit and lowered the roll size to 8,000 XTZ, and Athens B, which also increased the gas limit but left the roll size at 10,000 XTZ. During the Proposal stage, the Athens A proposal received 70% of the submitted votes. As a result, Athens A moved on to the Exploration phase while Athens B was rejected.

In the final promotion stage, almost 100% of Tezos governance participants voted in favor of implementing Athens A. Over 84% of eligible tokens participated in the vote. The upgrade went live shortly after the vote ended on May 29, 2019.