Chainstack - Notice history

Experiencing partially degraded performance

Chainstack Console - Operational

100% - uptime
Nov 2025 · 100.0%Dec · 99.95%Jan 2026 · 100.0%

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Chainstack API - Operational

100% - uptime
Nov 2025 · 100.0%Dec · 99.95%Jan 2026 · 100.0%

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Chainstack Docs - Operational

100% - uptime
Nov 2025 · 100.0%Dec · 100.0%Jan 2026 · 100.0%

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Chainstack Faucet - Operational

100% - uptime
Nov 2025 · 100.0%Dec · 100.0%Jan 2026 · 100.0%

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Nov 2025
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Notice history

Jan 2026

zkSync Era Mainnet Network Wide Outage
  • Resolved
    Resolved
    This incident has been resolved.
  • Monitoring
    Monitoring
    We implemented a fix and are currently monitoring the result.
  • Update
    Update
    We are currently investigating this incident.
  • Investigating
    Investigating
    We are currently investigating this incident.
Degraded performance on Aptos Testnet
  • Resolved
    Resolved
    This incident has been resolved.
  • Monitoring
    Monitoring
    We implemented a fix and are currently monitoring the result.
  • Identified
    Identified
    We are continuing to work on a fix for this incident.
  • Resolved
    Resolved
    This incident has been resolved.
  • Monitoring
    Monitoring
    We implemented a fix and are currently monitoring the result.
  • Investigating
    Investigating
    We are currently investigating this incident.
Aptos Testnet Global Elastic Nodes - Sync issues
  • Resolved
    Resolved
    This incident has been resolved.
  • Monitoring
    Monitoring
    We implemented a fix and are currently monitoring the result.
  • Investigating
    Investigating
    We are currently investigating this incident.
Tempo Moderato Testnet - Network Halt
  • Resolved
    Resolved
    This incident has been resolved.
  • Investigating
    Investigating
    We are currently investigating this incident.
Cronos Testnet lagging (LONDON)
  • Resolved
    Resolved
    This incident has been resolved.
  • Monitoring
    Monitoring
    We implemented a fix and are currently monitoring the result.
  • Investigating
    Investigating
    We are currently investigating this incident.

Dec 2025

Degraded Performance on Polygon Amoy
  • Resolved
    Resolved
    This incident has been resolved.
  • Monitoring
    Monitoring
    We implemented a fix and are currently monitoring the result.
  • Investigating
    Investigating
    We are currently investigating this incident.
Polygon Mainnet degraded performance in London
  • Resolved
    Resolved
    This incident has been resolved.
  • Investigating
    Investigating
    We are currently investigating this incident.
Polygon Mainnet degraded performance in Asia (Tokyo)
  • Resolved
    Resolved
    This incident has been resolved.
  • Investigating
    Investigating
    We are currently investigating this incident.
Scheduled protocol upgrade - zkSync v29.7.0
  • Completed
    December 24, 2025 at 5:00 AM
    Completed
    December 24, 2025 at 5:00 AM
    Maintenance has completed successfully
  • In progress
    December 24, 2025 at 3:00 AM
    In progress
    December 24, 2025 at 3:00 AM
    Maintenance is now in progress
  • Planned
    December 24, 2025 at 3:00 AM
    Planned
    December 24, 2025 at 3:00 AM

    Upgrade Details: We will upgrade the protocol zkSync Era from version v29.1.2 to version v29.7.0, as part of our ongoing efforts to enhance performance, security, and reliability.

    What to expect:

    • The upgrade process is expected to take approximately 2 hours

    • During this period, there may be temporary disruptions or degraded performance

    • No action is required on your end, our team will handle the upgrade seamlessly

    We will be closely monitoring the process to ensure a smooth transition and will provide updates as needed. Thank you for your patience and support!

    If you have any questions, feel free to reach out at support@chainstack.com

Internal platform upgrades
  • Completed
    December 18, 2025 at 4:00 PM
    Completed
    December 18, 2025 at 4:00 PM
    Maintenance has completed successfully
  • In progress
    December 18, 2025 at 12:00 PM
    In progress
    December 18, 2025 at 12:00 PM
    Maintenance is now in progress
  • Planned
    December 18, 2025 at 12:00 PM
    Planned
    December 18, 2025 at 12:00 PM

    Dear valued users.

    We want to inform you that we will be conducting platform maintenance. During this maintenance, we will upgrade software which can cause short network disruptions. We apologize for any inconvenience this may cause and appreciate your patience as we work to improve our services.

    If you have any questions or concerns, please don't hesitate to contact us. Thank you for your understanding.

Nov 2025

Scheduled urgent protocol upgrade - Arbitrum
  • Completed
    November 28, 2025 at 2:00 AM
    Completed
    November 28, 2025 at 2:00 AM
    Maintenance has completed successfully
  • In progress
    November 27, 2025 at 10:00 PM
    In progress
    November 27, 2025 at 10:00 PM
    Maintenance is now in progress
  • Planned
    November 27, 2025 at 10:00 PM
    Planned
    November 27, 2025 at 10:00 PM

    Upgrade Details: We will upgrade the protocol Arbitrum to version 3.9.3, as part of implementing ArbOS 51

    What to expect:

    • The upgrade process is expected to take approximately 4 hours

    • During this period, there may be temporary disruptions or degraded performance

    • No action is required on your end, our team will handle the upgrade seamlessly

    We will be closely monitoring the process to ensure a smooth transition and will provide updates as needed. Thank you for your patience and support!

    If you have any questions, feel free to reach out at support@chainstack.com

Scheduled protocol upgrade
  • Completed
    November 27, 2025 at 10:00 PM
    Completed
    November 27, 2025 at 10:00 PM
    Maintenance has completed successfully
  • In progress
    November 27, 2025 at 6:00 PM
    In progress
    November 27, 2025 at 6:00 PM
    Maintenance is now in progress
  • Planned
    November 27, 2025 at 6:00 PM
    Planned
    November 27, 2025 at 6:00 PM

    Upgrade Details: We will upgrade the protocol cronos from version 1.5.3 to version 1.5.4, as part of our ongoing efforts to enhance performance, security, and reliability.

    What to expect:

    • The upgrade process is expected to take approximately 4 hours

    • During this period, there may be temporary disruptions or degraded performance

    • No action is required on your end, our team will handle the upgrade seamlessly

    We will be closely monitoring the process to ensure a smooth transition and will provide updates as needed. Thank you for your patience and support!

    If you have any questions, feel free to reach out at support@chainstack.com

Degraded Performance on LAX cluster
  • Resolved
    Resolved
    This incident has been resolved.
  • Investigating
    Investigating
    We are currently investigating this incident.
Scheduled protocol upgrade
  • Completed
    November 24, 2025 at 4:30 PM
    Completed
    November 24, 2025 at 4:30 PM
    Maintenance has completed successfully
  • In progress
    November 24, 2025 at 3:30 PM
    In progress
    November 24, 2025 at 3:30 PM
    Maintenance is now in progress
  • Planned
    November 24, 2025 at 3:30 PM
    Planned
    November 24, 2025 at 3:30 PM

    Upgrade Details: We will upgrade the Optimism, as part of our ongoing efforts to enhance performance, security, and reliability.

    What to expect:

    • The upgrade process is expected to take approximately [upgrade hours] hours

    • During this period, there may be temporary disruptions or degraded performance

    • No action is required on your end, our team will handle the upgrade seamlessly

    We will be closely monitoring the process to ensure a smooth transition and will provide updates as needed. Thank you for your patience and support!

    If you have any questions, feel free to reach out at support@chainstack.com

Polygon Amoy Degraded Performance
  • Resolved
    Resolved
    This incident has been resolved.
  • Identified
    Identified
    We are continuing to work on a fix for this incident.

Nov 2025 to Jan 2026

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