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 releases: Stellar-core v12.0.0 + Horizon v0.21.0
Stellar core
Horizon
API
It’s a big week for Stellar releases: there are new versions of both Stellar-core and Horizon!
• Stellar Development Foundation
Horizon just got a lot better: our new ingestion engine and other great stuff
Horizon
Ingestion
API
We made a fundamental change to Horizon’s architecture and built a completely new system for ingesting data.
• Nikhil Saraf
Kelp: Why We Built It — The Liquidity Problem
Kelp
Liquidity
To help market makers automate bids and manage spreads, we developed Kelp, a 100% open-source market-making and trading bot, built for the Stellar…
• Stellar Development Foundation
Why Quorums Matter and How Stellar Approaches Them
Stellar consensus protocol
Proof-of-agreement
Quorums
Today we released stellar-core v11.2, an upgrade that includes some crucial improvements to quorum set configuration and monitoring.
• Stellar Development Foundation
Stellar Protocol 11 Public Network Upgrade
Protocol upgrade
SDK
Currently the planned coordination to upgrade the Stellar public network to Protocol 11 is scheduled for June 10th, 2019 at 1600 UTC.
• Stellar Development Foundation
Protocol 11 Improvements
Protocol upgrade
In advance of that vote, we wanted to walk you through some improvements introduced in that version of the protocol, and to let you know what they…
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