Blogs
Developers
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.
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…
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.
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…
Article
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…
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…
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…
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…
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…
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,…
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…
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…
Developer Blogs
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• Stellar Development Foundation
New Protocol 20 Vote
Protocol upgrade
Soroban
Smart Contracts
The vote on the Mainnet upgrade to Protocol 20 will take place on February 20, 2024.
• Stellar Development Foundation
SDF’s Vote to Postpone Protocol 20 Upgrade
SDF will disarm its validators and vote to postpone the vote to upgrade to Protocol 20 scheduled for January 30, 2024.
• Stellar Development Foundation
Fee Bump Bug Disclosure and the Impact on the Protocol 20 Upgrade
Soroban
Developer
Smart Contracts
Important information regarding the Protocol 20 Upgrade
• Tomer Weller
The Stellar Network’s Phased Rollout of Smart Contracts: The Road to Mainnet
Soroban
Smart contracts
Developers
Protocol upgrade
The release of a full suite of software that supports Protocol 20, which will bring Soroban smart contracts to Stellar is available. With the…
• Bri Wylde
Announcing RPCiege: Siege 5, Space Continuum
Rpciege
Developers
RPCiege: Siege 5, Space Continuum starts on December 4th! This siege consists of four individual skirmishes, all completed with the Soroban smart…
• Anuhya Challagundla
Sorobanathon Road to Mainnet: A Retrospective.
Developers
Soroban
Sorobanathon Road to Mainnet was a month-long virtual hackathon organized by the Stellar Development Foundation (SDF) that ran from September 1st to…
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