---
title: "The XE State Chain, XE Timekeepers, messaging, leases by the resource"
update: 4
week: 2026-w11
week_of: 2026-03-09
published: 2026-03-13
network: testnet
releases: ["core v0.3.0", "core v0.3.1"]
url: https://xe.marketized.io/changelog/2026-w11
---

# #004: The XE State Chain, XE Timekeepers, messaging, leases by the resource

_9–15 Mar 2026_

The network got a rulebook it runs by, witnesses for when work starts and stops, a way for any account to message another, and leases priced by what a machine really gives.

## A rulebook the network runs by

**New** · Protocol

The **XE State Chain** holds the network’s settings as a chain of its own, changed only by blocks the **XE Keyset** signs together. Any node can read the rules it runs by.

[How XE is governed](https://xe.marketized.io/governance)

## Witnesses for every lease

**New** · XE Machines

**XE Timekeepers** sign when a lease starts and when it ends. A quorum of them sets the time, so neither side of a lease can say it ran longer or shorter than it did.

[About leases](https://xe.marketized.io/stack/compute)

## Any account can talk to any account

**New** · Network

A directory maps every account to the node it lives on, and messages travel straight between them over **XE Mesh**, signed end to end.

[About messaging](https://xe.marketized.io/stack/messaging)

With the State Chain in place, the network’s own settings, like who the timekeepers are and how many must agree, stop being config files and become blocks anyone can check.

> **Why it matters:** Every setting the network runs by can now be read from any node. Nothing about how XE runs lives on a server you can’t see.

## Breaking changes

- **CLI & API:** Messaging protocol renamed to `/xe/msg/1.0.0`, and the node binary to `xe`

## New

- **XE Machines:** Leases priced by vCPUs, memory and disk, not a single unit
- **XE Machines:** A VM manager on every provider, and endpoints to list and run commands on your VMs
- **Network:** Peers found across the whole mesh, and reachable behind home routers
- **Wallet:** Governance, a state inspector, chat and a compute page with a terminal for your leases
- **Explorer:** State chain blocks and a browser for its settings, and a providers page with live capacity

## Security

- **XE Machines:** Attestations rate-limited, capped per block, and refused when their time is too far off