> ## Documentation Index
> Fetch the complete documentation index at: https://base-a060aa97-roethke-b20-upgrade-pages.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Holocene

> Overview of the Holocene hardfork, introducing dynamic EIP-1559 parameters configurable via SystemConfig and stricter block derivation rules.

## Activation Timestamps

| Network | Activation timestamp |
| - | - |
| `mainnet` | `1736445601` (2025-01-09 18:00:01 UTC) |
| `sepolia` | `1732633200` (2024-11-26 15:00:00 UTC) |

## Execution Layer

* [Dynamic EIP-1559 Parameters](/upgrades/holocene/exec-engine#dynamic-eip-1559-parameters)

## Consensus Layer

* [Holocene Derivation](/upgrades/holocene/derivation#holocene-derivation)

## Smart Contracts

* [System Config](/upgrades/holocene/system-config)