Radix Protocol Releases

Radix names its major network releases after cities of the ancient world, and each added a layer the last had done without: Olympia opened the public ledger in July 2021 with staking and the native XRD token and no smart contracts at all; Alexandria gave developers a Scrypto environment in December 2021, for an engine mainnet could not yet run; Babylon brought that engine live on 28 September 2023; and Xi’an is where sharding, the half of the design every release so far has deferred, has to arrive.

How a release lands

A release changes the rules every node runs, so it cannot be adopted piecemeal: operators upgrade, the validator set signals readiness, and the network crosses over at a nominated epoch. Smaller protocol updates land two to three times a year, and Radix’s documentation notes that these are what other networks call hard forks. Stokenet, the public test network, carries the same protocol version as mainnet and is periodically reset, which destroys every balance and deployed package on it.

First mainnet	Olympia, July 2021
Current mainnet	Babylon, 28 September 2023
Babylon enactment	Epoch 32,717
Next mainnet	Xi’an
Public test network	Stokenet
Smaller updates	Protocol updates, two to three a year
Naming	Cities of the ancient world

The following 7 pages are in Releases.

Radix Developer Environment (Alexandria)

Alexandria [ /ˌæləgˈzændriə/ ] was a pre-Babylon version of the Radix network and appended the Olympia release with a Scrypto developer environment fo…

Radix Mainnet (Babylon)

Babylon [ /ˈbæbəˌlɑn/ ] is the current version release of the Radix network that debuted smart contracts and the Radix Engine execution environment. T…

Radix Mainnet (Olympia)

Olympia [ /oʊˈlɪmpiə/ ] was was the initial release of the Radix Public Network and introduced the core node software, desktop wallet, staking, the Ra…

Radix Mainnet (Xi'an)

Xi’an [ /ʃi’æn/ ] will be the next major release of the Radix network . Xi’an will allow an unlimited number of shard groups , enabling Radix’s sharde…

Radix Protocol Updates

A protocol update is a named, major change to the rules every Radix node runs. Radix Docs describes them as happening approximately two to three times…

RCnet

RCnet was a test network developed by Radix to provide developers with the tools and standards necessary for creating more robust applications on Radi…

Stokenet

Operational note, 29 August 2026: the full Stokenet reset is done . The network went down at 07:00 UTC on Saturday 29 August 2026 and was declared bac…

HydrateLast updated Sep 11, 2026v2.0.03 revisions