The maximum operation size was increased tenfold, doubling the maximum size of smart contracts. Further optimized gas marking gas smart speed increased by 10 times. The depth-first execution order is adopted to realize more intuitive development of intelligent thinking. A test chain not used in the protocol, thus making the modification process more professional.

Sap and BLS12-3811 were added to enable privacy-protecting smart contracts and local permissions. Update the process by reducing the cycle length to five cycles and adding a fifth cycle.

Reduced storage costs by a factor of four to show the interpretation of each layer.

Increase each time and each time limit; Improved accuracy and flexibility of formulas used to calculate operational and endorsement rewards.

More specific versions of blockchain smart algorithms (Emmy+) were introduced; Simplifies smart contract development; Delegate process.

Increased the gas limit per section, reducing the roll size from 10000 ꜩ to 8000 ꜩ.

Tezos main network started.

The Betanet initial block starts and becomes the seed of the network.

Johann Gevers resigned from the foundation.

Breitmans wrote to two other members of the Swiss foundation who control Tezo's money and demanded the ouster of Johann Gevers, the foundation's chairman.

Tezos raised more than 65,000 bitcoins and 360,000 Ether coins (worth about $232 million) during its "Cherish" run. The Tezos Foundation was founded.

Public Alphanet was started.

The source code for Tezos is posted on GitHub.

Arthur and Kathleen Breitman co-founded Dynamic Ledger Solutions, Inc. This is the US-BASED company responsible for developing the Tezos blockchain.

Tezos White paper released.

Tezos position paper released.