---
title: "Engineering Blog Index"
description: "Running paraphrased index of architecture-relevant posts from the Base engineering blog."
source: https://basehub.org/architecture/engineering-blog/
---
A running index of paraphrased entries from the [Base engineering blog](https://blog.base.dev/) that touch on `base/base` architecture — proof systems, builder internals, decentralization milestones, and protocol upgrades. Entries are paraphrased summaries; follow the linked post for full detail.

## 2026

### Introducing Base Beryl — 18 June 2026

Beryl, Base's second network upgrade, is live on testnet and reaches mainnet on June 25, 2026. It turns Base into a first-class issuance platform through the B20 native token standard, tightens capital efficiency by shortening the withdrawal delay, and raises throughput with Reth V2. The post frames Beryl as the next step after Azul, which laid down the Base Stack and the multiproof system. See the local [Beryl hardfork overview](/specifications/beryl-overview/) for the paraphrased spec, or read the original at [blog.base.dev/introducing-base-beryl](https://blog.base.dev/introducing-base-beryl).

### Multiproofs on Base — 21 May 2026

Base has shipped its multiproof system on mainnet, pairing TEE and ZK provers so the chain can detect and respond to bugs onchain — the technical bar required to reach Stage 2 decentralization in Vitalik Buterin's framework. The new system also speeds up withdrawals by removing the long optimistic challenge window and lowers the bond capital honest defenders previously needed to keep posted. Read the full post at [blog.base.dev/multiproofs-on-base](https://blog.base.dev/multiproofs-on-base).