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Documentation Index

Fetch the complete documentation index at: https://base-a060aa97-mux-base-docs-codex-moly1dzt.mintlify.app/llms.txt

Use this file to discover all available pages before exploring further.

This page tracks historical configuration changes to the Base networks, including updates to block building, network fees, and other network parameters. For current fee behavior and active fee values, see Network Fees.

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Base Mainnet

DateChangeDocumentation
February 19, 2026Increased Minimum Base Fee to 5,000,000 weiMinimum Base Fee
February 4, 2026Increased EIP-1559 Denominator to 125EIP-1559 Fee Parameters
February 2, 2026Increased Minimum Base Fee to 2,000,000 weiMinimum Base Fee
January 22, 2026Increased Minimum Base Fee to 1,000,000 weiMinimum Base Fee
December 18, 2025Increased Minimum Base Fee to 500,000 weiMinimum Base Fee
December 4, 2025Enabled Minimum Base Fee (200,000 wei)Minimum Base Fee
September 17, 2025Enabled Per-Transaction Gas MaximumPer-Transaction Gas Maximum
September 11, 2025Ended testing Per-Transaction Gas MaximumPer-Transaction Gas Maximum
September 10, 2025Started testing Per-Transaction Gas MaximumPer-Transaction Gas Maximum
July 7, 2025Enabled FlashblocksFlashblocks
May 15, 2025Ended testing FlashblocksFlashblocks
May 15, 2025Started testing FlashblocksFlashblocks

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Base Sepolia

DateChangeDocumentation
February 19, 2026Increased Minimum Base Fee to 5,000,000 weiMinimum Base Fee
February 10, 2026Increased EIP-1559 Denominator to 125EIP-1559 Fee Parameters
February 10, 2026Increased Minimum Base Fee to 2,000,000 weiMinimum Base Fee
November 20, 2025Enabled Minimum Base Fee (200,000 wei)Minimum Base Fee
September 3, 2025Enabled Per-Transaction Gas MaximumPer-Transaction Gas Maximum
February 25, 2025Enabled FlashblocksFlashblocks