ZKsync Developers (∎, ∆)

Developer and status updates for the @ZKsync Elastic Network.

[ZKsync Developers (∎, ∆) @zkSyncDevs]

@cyfrin 🎯

[ZKsync Developers (∎, ∆) @zkSyncDevs]

If it hasn’t been attacked, it hasn’t been tested.

BattleChain testnet is where that happens.

Built on @ZKsync stack, live now → https://t.co/4RUPv0xPhW

[Cyfrin Audits @cyfrin]

As of today, BattleChain testnet is LIVE.

The pre-mainnet, post-testnet blockchain, where whitehats legally attack your smart contracts before they reach production.

Deploy. Get attacked. Ship stronger.

Here's why we built it, what it is, and how you can get involved 🧵

[ZKsync Developers (∎, ∆) @zkSyncDevs]

@blockscout 🙌👏

[ZKsync Developers (∎, ∆) @zkSyncDevs]

🚨 ZKsync is deprecating legacy Mailbox functions in favor of the new multichain (Elastic Network) interfaces.

If you’re currently using requestL2Transaction or finalizeEthWithdrawal, migrate to Bridgehub and L1Nullifier within the next 6 months.

Details → https://t.co/9XauTuv6Rg

[ZKsync Developers (∎, ∆) @zkSyncDevs]

Huge thanks to our security team, researchers, and security council members for helping keep the ZKsync protocol secure.

[ZKsync Developers (∎, ∆) @zkSyncDevs]

Today, in coordination with the ZK Security Council, we deployed an emergency upgrade to ZK chains. This update tightens cryptographic security and reduces the risk of misuse by a malicious operator.

No user action is required, and ZKsync Era remains fully operational.

[ZKsync @zksync]

Airbender just took the #1 spot on @eth_proofs.

Leading on both proving time and cost per proof, across single-GPU and multi-GPU categories.

[ZKsync Developers (∎, ∆) @zkSyncDevs]

@zohayousuf1 🎯

[ZKsync Developers (∎, ∆) @zkSyncDevs]

Private execution. Subsecond proving. Native interop. Production-ready chains.

ZKsync 2025 Rewind.

[ZKsync Developers (∎, ∆) @zkSyncDevs]

If you haven’t looked at ZKsync recently, this is worth 30 seconds.

New chains, private execution, fast proving, native interop ↓

[Sarah (Schwartz.lens) @schwartzswartz]

ZKsync has evolved a lot in the past year.

I put the latest updates together so you can catch up in ~30 seconds:

[ZKsync Developers (∎, ∆) @zkSyncDevs]

@schwartzswartz 🎯

[ZKsync Developers (∎, ∆) @zkSyncDevs]

@a16zcrypto 🎯

[ZKsync Developers (∎, ∆) @zkSyncDevs]

@TheZKnomist @taran_space 🎯

[ZKsync Developers (∎, ∆) @zkSyncDevs]

ZKsync OS has completed its final external security audit.

The report is published by @taran_space, covering our modular execution layer powering 15k+ TPS and ~200ms latency.

Read the audit ↓
https://t.co/11j3XE1LpV

[Taran.Space @taran_space]

Audit complete: our second public report for @ZKsync is now live.

This review focused on elliptic curve cryptography modules used in ZKsync OS — a highly optimized codebase for cutting-edge performance.

Full report with all issues and recommendations:
https://t.co/1IMGbvzb1W

[ZKsync Developers (∎, ∆) @zkSyncDevs]

@MadMaxx_eth @zksync 🎯

[ZKsync Developers (∎, ∆) @zkSyncDevs]

So far at @zksync ↴

→ Released Prividium (purpose-built for institutions)
→ Launched Airbender (fastest open source RISC-V prover)
→ Atlas Upgrade (15K+ TPS, 1s ZK finality, $0.0001 proving)
→ L1 interop for ZK chains
→ Introduced ZKsync Managed Services

Still early 👀

[ZKsync Developers (∎, ∆) @zkSyncDevs]

Full details: https://t.co/vjZGEa8B7c

[ZKsync Developers (∎, ∆) @zkSyncDevs]

Next ZKsync protocol upgrade lands early Q1 2026.

ZKsync Era and other Elastic Network chains will temporarily settle directly on Ethereum during the upgrade, including updates to ZKsync Gateway.

Interop expands from messaging to assets transfers and bundled calls.

[ZKsync Developers (∎, ∆) @zkSyncDevs]

Read more on this here ↴

https://t.co/EjsVIXQ0Os

[ZKsync Developers (∎, ∆) @zkSyncDevs]

Etherscan support for ZKsync Era will be discontinued on Jan 7th, 2026.

This allows us to prioritize the ZKsync native explorer and support protocol-native features like interop transactions, Gateway settlement, and additional EVM compilers like solx.

ZKsync native explorer → https://t.co/bP5o9u83Bv