holgerd77

User

Ok, seems this dramatic change might not be worth the savings, but thanks a lot for the try. Let's go back to the initial code: after all your experiments with re-implementing, size comparisons and the like? Do you have very simple/local/mininmal-change suggestions how we can safe on BAL size here? These can be very local things, small optimizations, small data format adjustments, .... Whatever you can imagine.

---

Cursor

Good question. Let me look at the actual old-format BAL structure and find concrete, local optimizations with real measured impact.

holgerd77

Spec: https://github.com/ethereum/EIPs/blob/fad1a1acab0a433970e47e0b73a4f8a28c220675/EIPS/eip-7928.md (2026-02-03)

2026-02-16, Cursor, Opus 4.6

EIP-7928 Spec Improvement Suggestions - Design

Table of Contents

• Focus & User Input
• Summary Table

holgerd77

Spec: https://github.com/ethereum/EIPs/blob/fad1a1acab0a433970e47e0b73a4f8a28c220675/EIPS/eip-7928.md (2026-02-03)

"In Ethereum we strive for a lean and easy to implement protocol. With your experiences from implementing core BAL parts gained in this chat - when analyzing the EIP spec in @EIPs/EIPS/eip-7928.md would you see potential enhancements or changes to the spec itself, which would significantly reduce implementation effort on the one hand and have no or only litte downsides (if present, please name them) on the other side?"

2026-02-05, Cursor, Sonnet 4.5

EIP-7928 BAL Spec Improvement Suggestions - Wording/Coding Guidance

Table of Contents

holgerd77

{
    "tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists.py::test_bal_empty_block_no_coinbase[fork_Amsterdam-blockchain_test]": {
        "network": "Amsterdam",
        "genesisBlockHeader": {
            "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
            "uncleHash": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
            "coinbase": "0x0000000000000000000000000000000000000000",
            "stateRoot": "0x6f978e5ec827eef738381e1ca1e9332001ac548e31fdb82b90319b3ae94e22d7",
            "transactionsTrie": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
            "receiptTrie": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",

holgerd77

const FORMAT = 239;
const MAGIC = 0;
const VERSION = 1;
const MAX_HEADER_SIZE = 49152;
const KIND_TYPE = 1;
const KIND_CODE = 2;
const KIND_CONTAINER = 3;
const KIND_DATA = 4;
const TERMINATOR = 0;
const TYPE_MIN = 4;

holgerd77

Add Fully Qualified ESM Imports
-------------------------------

*****************************
In test and src folder
*****************************

RUN TESTS OFTEN (AFTER EACH LARGE OP)!!
EVENTUALLY IN-BETWEEN COMMITS!!
NO REGEX/REGEX EXTREMELY IMPORTANT (OTHERWISE FALSE REPLACEMENTS)!!

holgerd77

Tape -> Vitest Regex Expressions
--------------------------------

import * as tape from 'tape' // No regex
import { assert, describe, it } from 'vitest'

import type * as tape from 'tape' // No regex
import { assert, describe, it } from 'vitest'

**********************************

holgerd77

➜  net-env-cli DEBUG=vm:* ts-node shandong-ethers-state-manager-trace.ts
  vm:block ---------------------------------------------------------------------------------------------------- +0ms
  vm:block Running block hash=382c720b54a97bcb9388f5d1e422205c5174fd6d0f0fe431005dd32cd3928093 number=6101 hardfork=merge +0ms
  vm:state ---------------------------------------------------------------------------------------------------- +0ms
  vm:state message checkpoint +0ms
  vm:block block checkpoint +1ms
  vm:block Validate block +0ms
  vm:block Apply transactions +28ms
  vm:state ---------------------------------------------------------------------------------------------------- +28ms
  vm:state message checkpoint +0ms

holgerd77

import { Chain, Common, Hardfork } from '@ethereumjs/common'
import { Account, Address, bigIntToHex, bufferToBigInt, bufferToHex } from '@ethereumjs/util'
import { VM } from '@ethereumjs/vm'
import { JsonRpcProvider } from '@ethersproject/providers'

import { EthersStateManager } from '../src/ethersStateManager'

const run = async () => {
  const infura = 'https://mainnet.infura.io/v3/[YOUR-INFURA-KEY]'
  const provider = new JsonRpcProvider(infura)

holgerd77

'use strict'

const test = require('tape')
const Blockchain = require('..')
const Block = require('ethereumjs-block')
const async = require('async')
const ethUtil = require('ethereumjs-util')
const levelup = require('levelup')
const leveldown = require('leveldown')
const memdown = require('memdown')