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

# Overview

> Overview of the Beryl hardfork, introducing the B20 native token standard, reduced withdrawal delays, and Reth V2.

## Summary

* Introduce [B20](/base-chain/specs/upgrades/beryl/b20): Base's native token standard for stablecoin, real-world asset (RWA), and long-tail token issuers
* Reduce the single-proof withdrawal finalization period from 7 days to 5 days for increased capital efficiency
* Reth V2: up to 50% disk reduction and a rewritten state root pipeline delivering +33% throughput
* Upcoming in a later Beryl phase: [native account abstraction (EIP-8130)](/base-chain/specs/upgrades/beryl/eip-8130), currently previewing on the vibenet devnet

## Activation Timestamps

| Network   | Timestamp    | Date                    |
| --------- | ------------ | ----------------------- |
| `mainnet` | `1782410400` | 2026-06-25 18:00:00 UTC |
| `sepolia` | `1781805600` | 2026-06-18 18:00:00 UTC |

## Required Software

| Layer          | Software         | Mainnet                                                     | Sepolia                                                     |
| -------------- | ---------------- | ----------------------------------------------------------- | ----------------------------------------------------------- |
| Execution (EL) | `base-reth-node` | [v1.1.1+](https://github.com/base/base/releases/tag/v1.1.1) | [v1.1.0+](https://github.com/base/base/releases/tag/v1.1.0) |
| Consensus (CL) | `base-consensus` | [v1.1.1+](https://github.com/base/base/releases/tag/v1.1.1) | [v1.1.0+](https://github.com/base/base/releases/tag/v1.1.0) |
| -              | `base/node`      | [v1.1.1+](https://github.com/base/node/releases/tag/v1.1.1) | [v1.1.0+](https://github.com/base/node/releases/tag/v1.1.0) |

<Warning>
  Action required before activation. Upgrade to the required version before each network's activation date above.
</Warning>

## B20: Native Token Standard

B20 is Base's native token standard - ERC-20 compatible tokens implemented as Rust precompiles, designed for stablecoin, real-world asset, and long-tail token issuers.

* [B20 Overview](/base-chain/specs/upgrades/beryl/b20)
* [Roles Model](/base-chain/specs/upgrades/beryl/b20#roles-model)
* [Policy Integration](/base-chain/specs/upgrades/beryl/b20#policy-integration)
* [Factory](/base-chain/specs/upgrades/beryl/b20#factory)
* [Policy Registry](/base-chain/specs/upgrades/beryl/b20#policy-registry)
* [Mint & Burn](/base-chain/specs/upgrades/beryl/b20#mint)
* [Variants](/base-chain/specs/upgrades/beryl/b20#variants)

## Native Account Abstraction (EIP-8130)

A later Beryl phase brings account abstraction into the protocol. Accounts configure authorized actors and signature validation onchain. Apps get portable smart accounts, scoped session keys, atomic batching, and native gas sponsorship without bundler or relay infrastructure. EIP-8130 is experimental and currently runs only on the vibenet devnet.

* [Native Account Abstraction (EIP-8130)](/base-chain/specs/upgrades/beryl/eip-8130)

## Withdrawals

The single-proof dispute game finalization window is reduced from 7 days to 5 days. The dual-proof fast path (TEE + ZK) introduced in Azul remains at 1 day.

Shortening the single-proof window frees capital for fast-bridge liquidity providers sooner, reducing fees and improving reliability for users who bridge through third-party partners.