@ethereumjs/common v4.3.0

Full 4844 Browser Readiness

WASM KZG

Shortly following the "Dencun Hardfork Support" release round from last month, this is now the first round of releases where the EthereumJS libraries are now fully browser compatible regarding the new 4844 functionality, see PRs #3294 and #3296! 🎉

Our WASM wizard @acolytec3 has spent the last two weeks and created a WASM build of the c-kzg library which we have released under the kzg-wasm name on npm (and you can also use independently for other projects). See the newly created GitHub repository for some library-specific documentation.

This WASM KZG library can now be used for KZG initialization (replacing the old recommended c-kzg initialization), see the respective README section from the tx library for usage instructions (which is also accurate for the other using upstream libraries like block or EVM).

Note that kzg-wasm needs to be added manually to your own dependencies and the KZG initialization code needs to be adopted like the following (which you will likely want to do in most cases, so if you deal with post Dencun EVM bytecode and/or 4844 blob txs in any way):

import { loadKZG } from 'kzg-wasm'
import { Chain, Common, Hardfork } from '@ethereumjs/common'

const kzg = await loadKZG()

// Instantiate `common`
const common = new Common({
  chain: Chain.Mainnet,
  hardfork: Hardfork.Cancun,
  customCrypto: { kzg },
})

Manual addition is necessary because we did not want to bundle our libraries with WASM code by default, since some projects are then prevented from using our libraries.

Note that passing in the KZG setup file is not necessary anymore, since this is now defaulting to the setup file from the official KZG ceremony (which is now bundled with the KZG library).

Trie Node.js Import Bug

Since this fits well also to be placed here relatively prominently for awareness: we had a relatively nasty bug in the @ethereumjs/trie library with a Node.js web stream import also affecting browser compatibility, see PR #3280. This bug has been fixed along with these releases and this library now references the updated trie library version.

Other Changes

• TypeScript type fixes leading to build problems with certain tools (Vercel), PR #3306
• Early support for EIP-2935 - "Save historical block hashes in state" (Verkle related, likely subject to change), PRs #3268 and #3327

@ethereumjs/client v0.10.1

This is mainly a maintenance release coming with a few internal changes and minor bug fixes, single user-focused addition is the support for the eth_feeHistory RPC call.

Support for eth_feeHistory RPC Method

Support for the eth_feeHistory RPC endpoint has been added in PR #3295. The endpoint allows to query the base fee and the priority fee per gas for a requested/supported block range.

Internal Changes and Improvements

• The underlying EthereumJS libraries now use kzg-wasm instead of the c-kzg Node.js bindings for 4844 functionality, PR #3294
• Ensure executed block does not get pruned if head=final FCU, PR #3153
• Improved SNAP sync behavior in certain scenarios (SNAP feature still experimental), PR #3200
• Refactor internal Engine API code structure, PR #3291
• Remove devnet6.txt trusted setup file and all test usages in downstream libraries, PR #3288
• Snap sync (experimental): use zero-element proof for checking validity of final, empty range result, PR #3047

@ethereumjs/blockchain v7.2.0

Full 4844 Browser Readiness

WASM KZG

Shortly following the "Dencun Hardfork Support" release round from last month, this is now the first round of releases where the EthereumJS libraries are now fully browser compatible regarding the new 4844 functionality, see PRs #3294 and #3296! 🎉

Our WASM wizard @acolytec3 has spent the last two weeks and created a WASM build of the c-kzg library which we have released under the kzg-wasm name on npm (and you can also use independently for other projects). See the newly created GitHub repository for some library-specific documentation.

This WASM KZG library can now be used for KZG initialization (replacing the old recommended c-kzg initialization), see the respective README section from the tx library for usage instructions (which is also accurate for the other using upstream libraries like block or EVM).

Note that kzg-wasm needs to be added manually to your own dependencies and the KZG initialization code needs to be adopted like the following (which you will likely want to do in most cases, so if you deal with post Dencun EVM bytecode and/or 4844 blob txs in any way):

import { loadKZG } from 'kzg-wasm'
import { Chain, Common, Hardfork } from '@ethereumjs/common'

const kzg = await loadKZG()

// Instantiate `common`
const common = new Common({
  chain: Chain.Mainnet,
  hardfork: Hardfork.Cancun,
  customCrypto: { kzg },
})

Manual addition is necessary because we did not want to bundle our libraries with WASM code by default, since some projects are then prevented from using our libraries.

Note that passing in the KZG setup file is not necessary anymore, since this is now defaulting to the setup file from the official KZG ceremony (which is now bundled with the KZG library).

Trie Node.js Import Bug

Since this fits well also to be placed here relatively prominently for awareness: we had a relatively nasty bug in the @ethereumjs/trie library with a Node.js web stream import also affecting browser compatibility, see PR #3280. This bug has been fixed along with these releases and this library now references the updated trie library version.

Other Changes

• Remove internal _init() method along EVM/VM constructor refactoring, PRs #3304 and #3315
• Fix a type error related to the lru-cache dependency, PR #3285

@ethereumjs/block v5.2.0

Full 4844 Browser Readiness

WASM KZG

Shortly following the "Dencun Hardfork Support" release round from last month, this is now the first round of releases where the EthereumJS libraries are now fully browser compatible regarding the new 4844 functionality, see PRs #3294 and #3296! 🎉

Our WASM wizard @acolytec3 has spent the last two weeks and created a WASM build of the c-kzg library which we have released under the kzg-wasm name on npm (and you can also use independently for other projects). See the newly created GitHub repository for some library-specific documentation.

This WASM KZG library can now be used for KZG initialization (replacing the old recommended c-kzg initialization), see the respective README section from the tx library for usage instructions (which is also accurate for the other using upstream libraries like block or EVM).

Note that kzg-wasm needs to be added manually to your own dependencies and the KZG initialization code needs to be adopted like the following (which you will likely want to do in most cases, so if you deal with post Dencun EVM bytecode and/or 4844 blob txs in any way):

import { loadKZG } from 'kzg-wasm'
import { Chain, Common, Hardfork } from '@ethereumjs/common'

const kzg = await loadKZG()

// Instantiate `common`
const common = new Common({
  chain: Chain.Mainnet,
  hardfork: Hardfork.Cancun,
  customCrypto: { kzg },
})

Manual addition is necessary because we did not want to bundle our libraries with WASM code by default, since some projects are then prevented from using our libraries.

Note that passing in the KZG setup file is not necessary anymore, since this is now defaulting to the setup file from the official KZG ceremony (which is now bundled with the KZG library).

Trie Node.js Import Bug

Since this fits well also to be placed here relatively prominently for awareness: we had a relatively nasty bug in the @ethereumjs/trie library with a Node.js web stream import also affecting browser compatibility, see PR #3280. This bug has been fixed along with these releases and this library now references the updated trie library version.

Other Changes

• Fixed a bug in the Block.fromRPC() and BlockHeader.fromRPC() constructors to not parse the parentBeaconBlockRoot correctly, PR #3283

@ethereumjs/verkle v0.0.2

• Fix a type error related to the lru-cache dependency, PR #3285
• Downstream dependency updates, see PR #3297

@ethereumjs/wallet v2.0.2

Self-Contained (and Working 🙂) README Examples

All code examples in EthereumJS monorepo library README files are now self-contained and can be executed "out of the box" by simply copying them over and running "as is", see tracking issue #3234 for an overview. Additionally all examples can now be found in the respective library examples folder (in fact the README examples are now auto-embedded from over there). As a nice side effect all examples are now run in CI on new PRs and so do not risk to get outdated or broken over time.

Other Changes

• Dependency version updates, PR #3261

@ethereumjs/vm v7.2.0

Dencun Hardfork Support

While all EIPs contained in the upcoming Dencun hardfork run pretty much stable within the EthereumJS libraries for quite some time, this is the first release round which puts all this in the official space and removes "experimental" labeling preparing for an imminent Dencun launch on the last testnets (Holesky) and mainnet activation! 🎉

Dencun hardfork on the execution side is called Cancun and can be activated within the EthereumJS libraries (default hardfork still Shanghai) with a following common instance:

import * as kzg from 'c-kzg'
import { Common, Chain, Hardfork } from '@ethereumjs/common'
import { initKZG } from '@ethereumjs/util'

initKZG(kzg, __dirname + '/../../client/src/trustedSetups/official.txt')
const common = new Common({
  chain: Chain.Mainnet,
  hardfork: Hardfork.Cancun,
  customCrypto: { kzg: kzg },
})
console.log(common.customCrypto.kzg) // Should print the initialized KZG interface

Note that the kzg initialization slightly changed from previous experimental releases and a custom KZG instance is now passed to Common by using the customCrypto parameter, see PR #3262.

At the moment using the Node.js bindings for the c-kzg library is the only option to get KZG related functionality to work, note that this solution is not browser compatible. We are currently working on a WASM build of that respective library. Let us know on the urgency of this task! 😆

While EIP-4844 - activating shard blob transactions - is for sure the most prominent EIP from this hardfork, enabling better scaling for the Ethereum ecosystem by providing cheaper block space for L2s, there are in total 6 EIPs contained in the Dencun hardfork. The following is an overview of which EthereumJS libraries mainly implement the various EIPs:

• EIP-1153: Transient storage opcodes (@ethereumjs/evm)
• EIP-4788: Beacon block root in the EVM (@ethereumjs/block, @ethereumjs/evm, @ethereumjs/vm)
• EIP-4844: Shard Blob Transactions (@ethereumjs/tx, @ethereumjs/block, @ethereumjs/evm)
• EIP-5656: MCOPY - Memory copying instruction (@ethereumjs/evm)
• EIP-6780: SELFDESTRUCT only in same transaction (@ethereumjs/vm)
• EIP-7516: BLOBBASEFEE opcode (@ethereumjs/block, @ethereumjs/evm)

WASM Crypto Support

With this release round there is a new way to replace the native JS crypto primitives used within the EthereumJS ecosystem by custom/other implementations in a controlled fashion, see PR #3192.

This can e.g. be used to replace time-consuming primitives like the commonly used keccak256 hash function with a more performant WASM based implementation, see @ethereumjs/common README for some detailed guidance on how to use.

Self-Contained (and Working 🙂) README Examples

All code examples in EthereumJS monorepo library README files are now self-contained and can be executed "out of the box" by simply copying them over and running "as is", see tracking issue #3234 for an overview. Additionally all examples can now be found in the respective library examples folder (in fact the README examples are now auto-embedded from over there). As a nice side effect all examples are now run in CI on new PRs and so do not risk to get outdated or broken over time.

@ethereumjs/util v9.0.2

Self-Contained (and Working 🙂) README Examples

All code examples in EthereumJS monorepo library README files are now self-contained and can be executed "out of the box" by simply copying them over and running "as is", see tracking issue #3234 for an overview. Additionally all examples can now be found in the respective library examples folder (in fact the README examples are now auto-embedded from over there). As a nice side effect all examples are now run in CI on new PRs and so do not risk to get outdated or broken over time.

Other Changes

• Adjust byte bigint utils, PR #3159
• Check that hex to byte conversion is valid in hexToBytes, PR #3185
• Performance-optimized hexToBytes, PR #3203

@ethereumjs/tx v5.2.1

• Hotfix release adding a missing debug dependency to the @ethereumjs/trie package (dependency), PR #3271

@ethereumjs/tx@5.2.0

Dencun Hardfork Support

While all EIPs contained in the upcoming Dencun hardfork run pretty much stable within the EthereumJS libraries for quite some time, this is the first release round which puts all this in the official space and removes "experimental" labelling preparing for an imminent Dencun launch on the last testnets (Holesky) and mainnet activation! 🎉

Dencun hardfork on the execution side is called Cancun and can be activated within the EthereumJS libraries (default hardfork still Shanghai) with a following common instance:

import * as kzg from 'c-kzg'
import { Common, Chain, Hardfork } from '@ethereumjs/common'
import { initKZG } from '@ethereumjs/util'

initKZG(kzg, __dirname + '/../../client/src/trustedSetups/official.txt')
const common = new Common({
  chain: Chain.Mainnet,
  hardfork: Hardfork.Cancun,
  customCrypto: { kzg: kzg },
})
console.log(common.customCrypto.kzg) // Should print the initialized KZG interface

Note that the kzg initialization slightly changed from previous experimental releases and a custom KZG instance is now passed to Common by using the customCrypto parameter, see PR #3262.

At the moment using the Node.js bindings for the c-kzg library is the only option to get KZG related functionality to work, note that this solution is not browser compatible. We are currently working on a WASM build of that respective library. Let us know on the urgency of this task! 😆

While EIP-4844 - activating shard blob transactions - is for sure the most prominent EIP from this hardfork, enabling better scaling for the Ethereum ecosystem by providing cheaper block space for L2s, there are in total 6 EIPs contained in the Dencun hardfork. The following is an overview of which EthereumJS libraries mainly implement the various EIPs:

• EIP-1153: Transient storage opcodes (@ethereumjs/evm)
• EIP-4788: Beacon block root in the EVM (@ethereumjs/block, @ethereumjs/evm, @ethereumjs/vm)
• EIP-4844: Shard Blob Transactions (@ethereumjs/tx, @ethereumjs/block, @ethereumjs/evm)
• EIP-5656: MCOPY - Memory copying instruction (@ethereumjs/evm)
• EIP-6780: SELFDESTRUCT only in same transaction (@ethereumjs/vm)
• EIP-7516: BLOBBASEFEE opcode (@ethereumjs/block, @ethereumjs/evm)

WASM Crypto Support

With this release round there is a new way to replace the native JS crypto primitives used within the EthereumJS ecosystem by custom/other implementations in a controlled fashion, see PR #3192.

This can e.g. be used to replace time-consuming primitives like the commonly used keccak256 hash function with a more performant WASM based implementation, see @ethereumjs/common README for some detailed guidance on how to use.

New addSignature() API Method

There is a new dedicated method addSignature() introduced for all tx types which allows to add the raw signature values to a transaction without the need to call into tx.sign(), which would need a private key to do so, see PR #3238.

This functionality is e.g. handy for hardware wallet implementations where the signature generation is taking place externally.

Self-Contained (and Working 🙂) README Examples

All code examples in EthereumJS monorepo library README files are now self-contained and can be executed "out of the box" by simply copying them over and running "as is", see tracking issue #3234 for an overview. Additionally all examples can now be found in the respective library examples folder (in fact the README examples are now auto-embedded from over there). As a nice side effect all examples are now run in CI on new PRs and so do not risk to get outdated or broken over time.