Protocol Upgrades

An ever-evolving network

Article

Stellar Development Foundation

Protocol 22 Upgrade Guide

Protocol upgrade

Soroban

Your go-to guide for upgrading to Protocol 22, which introduces constructors and host functions for BLS12-381 to the Stellar network.

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Article

Nicole Adair

Protocol 21 Upgrade Guide

Your go-to guide for upgrading to Protocol 21, which introduces secp256r1, improvements to state archival, and fee optimizations to the Stellar…

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Article

Stellar Development Foundation

Protocol 20 Upgrade Guide

Protocol upgrade

Soroban

Your go-to guide for upgrading to Protocol 20, which introduces support for Soroban smart contracts to Stellar.

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Article

Justin Rice

Protocol 19 Upgrade Complete!

Today, June 8, 2022 at 15:00 UTC, the Stellar public network successfully upgraded to Protocol 19! If you're having trouble with your Stellar…

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Article

Justin Rice

Protocol 19 Upgrade Guide

A dev guide to upgrading to Protocol 19.

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Article

Justin Rice

Protocol 18 Upgrade Complete!

Protocol upgrade

AMM

Liquidity

Today, November 3, 2021 at 15:00 UTC, the Stellar public network successfully upgraded to Protocol 18. It's a big day and a big upgrade because it…

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Article

Justin Rice

Protocol 18 Upgrade Guide

Protocol upgrade

AMM

Liquidity

Protocol 18, which enables the creation of AMMs on Stellar, is coming! If you develop on Stellar, you need to install up-to-date versions of all…

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Article

Justin Rice

Protocol 17 Upgrade Complete!

Protocol upgrade

Asset clawback

Regulation

Today, June 1, 2021 at 1500 UTC, the Stellar public network successfully upgraded to Protocol 17, which introduces a new feature designed to make it…

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Article

Justin Rice

Protocol 17 Upgrade Guide

Protocol upgrade

Asset clawback

Regulation

If you develop on Stellar, you need to prepare for the June 1, 2021 Protocol 17 network upgrade by installing up-to-date versions of all…

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Article

Justin Rice

Protocol 16 Upgrade Complete!

Protocol upgrade

Network halt

Today, April 10, 20201 at 1500 UTC, Stellar public network validators voted to upgrade the network to Protocol 16. This special network upgrade was…

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Article

Stellar Development Foundation

Protocol 16 Upgrade Guide

Protocol upgrade

Network halt

We just released a new version of Stellar Core that will resolve the issues many nodes experienced this week. If you run a Stellar node of any kind,…

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Article

Justin Rice

Protocol 15 Upgrade Complete!

Protocol upgrade

Sponsored reserves

Claimable balances

On 11/23/2020 at 1600 UTC, Stellar validators voted to upgrade the public network to Protocol 15. Two new features — Claimable Balances and Sponsored…

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Article

Justin Rice

Announcing...Stellar Protocol 15

Protocol upgrade

Claimable balances

Sponsored reserves

It turns out we're skipping the public network upgrade to Protocol 14. Instead, we're going straight to Protocol 15, and rescheduling the vote to…

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Developer Blogs

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Bri Wylde

Auth (-entication) and (-orization) in blockchain

Blockchains are public ledgers that individuals use to create, store, and move value in the open, and devising methods to ensure security is critical…

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Julian Martinez

EVM to Soroban Understanding Data Types | Solidity to Rust Series Pt. 2

Data types are critical in programming, serving to define the kind of data we deal with. They ensure data integrity, consistency, and efficient…

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Fabricius Zatti

Yield-Bearing Assets on Stellar: Unlocking Potential with Soroban

Soroban

Asset tokenization

Discover the fundamentals of yield-bearing assets on the Stellar network. Soroban.

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Justin Rice

Validator Guide to Soroban Mainnet Phase 1

Soroban

Protocol upgrade

How Stellar validators can arm their nodes to upgrade Mainnet settings for Phase 1 of the Soroban rollout

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protocol upgrade

Stellar Development Foundation

Protocol 20 Upgrade Guide

Protocol upgrade

Soroban

Your go-to guide for upgrading to Protocol 20, which introduces support for Soroban smart contracts to Stellar.

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Stellar Development Foundation

Protocol 20 and Smart Contracts Are Live on Mainnet

Smart Contracts

On Feb. 20, Stellar network validators voted to upgrade Mainnet to Protocol 20, kicking off a new era for the Stellar smart contracts tech stack,…

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Developer Documentation

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