@matkt do you want help extracting it from the Verkle branch into Besu?

yes feel free to do it 👍

most important is here

• Write historical block history
  https://github.com/hyperledger/besu/blob/verkle/ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/HistoricalBlockHashProcessor.java
• Allow to add exception in order to write empty account in the trie
  https://github.com/hyperledger/besu/blob/verkle/ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/ClearEmptyAccountStrategy.java
• Define the clear empty account in the protocol schedule
  https://github.com/hyperledger/besu/blob/verkle/ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/MainnetProtocolSpecs.java#L143
  https://github.com/hyperledger/besu/blob/verkle/ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/MainnetProtocolSpecs.java#L296
• Add clear empty account with exception for the new fork
  https://github.com/hyperledger/besu/blob/verkle/ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/MainnetProtocolSpecs.java#L743
• Add historical block hash processor for the new fork
  https://github.com/hyperledger/besu/blob/verkle/ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/MainnetProtocolSpecs.java#L769
• Call it during block processor
  https://github.com/hyperledger/besu/blob/verkle/ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/AbstractBlockProcessor.java#L115

etc..