# Runtime

A listing of Runtime changes on the blockchain

_Source: https://beta.taostats.io/docs/understanding-taostats/chain/runtime_

_Last reviewed: 2026-10-14_

A listing of Runtime changes on the blockchain

Whenever the chain is updated, the runtime version is updated.  This table shows a running list of the latest changes to the chain code.

* **Height**: The block the change update was made
* **Spec Version**: the new version of the chain that was implemented.
* **Date**: when the update occurred (mousover for exact date).

![Taostats chain runtime page table of spec version upgrades with height, runtime version, and time columns](https://beta.taostats.io/images/docs/understanding-taostats/taostats-chain-runtime-table.png)

To see what changed in each upgrade, and when each change reached testnet and mainnet, use the [protocol change tracker](https://beta.taostats.io/docs/concepts/protocol-changes/change-tracker).