Karst Network Upgrade

Table of Contents

• Execution Layer
• Consensus Layer

This document is not finalized and should be considered experimental.

Execution Layer

• Reduce bn256Pairing precompile input size
• Osaka (Execution Layer):
  • EIP-7642: eth/69 - history expiry and simpler receipts
  • EIP-7823: Set upper bounds for MODEXP
  • EIP-7825 Transaction Gas Limit Cap (not enabled for deposits, which are already subject to a 20MGas limit)
  • EIP-7883: ModExp Gas Cost Increase
  • EIP-7910: eth_config JSON-RPC Method
  • EIP-7939: Count leading zeros (CLZ) opcode
  • EIP-7951: Precompile for secp256r1 Curve Support (this has been present since Fjord, but the gas cost will be updated to align with Ethereum)

Consensus Layer

• Network upgrade transactions applied during derivation