# ZKSync Mainnet- Block Finalization Stalled

- Provider: [Alchemy](https://down.guide/providers/alchemy)
- Confidence: Confirmed
- Impact: Degraded
- lasted 1d 4h
- started 2026-05-25 08:30 UTC
- ZKsync
- id: DWN-5479a26ef6
- Official page: https://stspg.io/pgjrjtmmz8ft

## Updates from Alchemy
### 2026-05-25 08:30 UTC: investigating
We are currently investigating an issue affecting ZKSync Mainnet where block finalization has stalled. This appears to be an upstream issue with the ZKSync network. We are actively monitoring the situation and have engaged the ZKSync team. We will provide updates as the investigation progresses.

### 2026-05-26 12:57 UTC: resolved
This incident has been resolved.

From the builder: does your app depend on Alchemy? [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=alchemy) detects problems in your own logs without hand-written monitors, and you can ask it in plain language which errors mention Alchemy.

---
down.guide reads providers' official status pages every minute and adds its own evidence, always labeled. Free, no account. Agents: MCP at https://down.guide/mcp, REST at https://down.guide/api/v1, feeds at https://down.guide/feed. Built by [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=DWN-5479a26ef6), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.