Provider outageSynthetic evidence · demo

AWS us-east-1 — EBS API degradation

Incident · AWS-RCA-2026-04-26-USE1Window · Sun Apr 26, 2026 · 14:08 → 14:44 UTCDuration · 36 min

A failure in the metadata service of the EBS control plane in the us-east-1 region resulted in elevated API error rates and timeouts for volume attach/detach operations. Validators relying on EBS-backed state were unable to write checkpoints during the incident window.

§ 01

Timeline

14:08 UTCCustomers begin reporting attach/detach failures in us-east-1d.

14:13 UTCAWS confirms elevated error rates on EBS API. P1 declared.

14:22 UTCEBS control-plane metadata service identified as failure mode.

14:38 UTCFailover to standby metadata replica complete; recovery starting.

14:44 UTCAPI error rates returned to baseline. Customers fully recovered.

§ 02

Cause

Control-plane metadata service quorum loss following a network partition between two availability zones. Non-malicious. Operator action not implicated.

§ 03

Impact

Validators affectedDemo cohort with EBS-backed state

Slashing eventsSynthetic downtime slash in window

GeographyLimited to us-east-1; other regions unaffected

§ 04

Machine-readable classification

{
  "kind": "INFRASTRUCTURE_OUTAGE",
  "provider_attributed": true,
  "operator_attributed": false,
  "malicious": false,
  "excluded_under_policy": false
}

Note. This document is synthetic, written to demonstrate the kind of evidence SlashShield's GenLayer contract reasons over. No real-world outage is referenced; no validators were affected.