> ## Documentation Index
> Fetch the complete documentation index at: https://base-a060aa97-feat-add-changelog.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Beryl

> Developer-facing changes introduced by the Beryl upgrade.

The Beryl upgrade introduces [B20](/base-chain/specs/upgrades/beryl/b20/specification), Base's
native token standard for stablecoins, real-world assets, and long-tail tokens. It also reduces
the single-proof withdrawal finalization period from seven days to five days and introduces Reth
V2 improvements.

## More about Beryl

See the [Beryl overview](/base-chain/specs/upgrades/beryl/overview) for activation dates,
required software versions, and the complete upgrade summary.