THIS IS A SCHEDULED EVENT Oct <var data-var='date'>8</var>, <var data-var='time'>15:45</var> - <var data-var='time'>17:00</var> UTC Oct <var data-var='date'> 5</var>, <var data-var='time'>11:48</var> UTC Scheduled - Sei Mainnet will undergo a mandatory consensus upgrade at block 236450000, currently estimated around 16:30 UTC on October 8, 2026. As the upgrade is triggered by block height, the exact time may vary and could occur earlier or later than estimated. Block production is expected to pause briefly during the upgrade, typically for around 5–10 minutes.

Sei Mainnet Consensus Upgrade

Oct <var data-var='date'> 6</var>, <var data-var='time'>14:30</var> UTC Completed - The scheduled maintenance has been completed. Oct <var data-var='date'> 6</var>, <var data-var='time'>13:30</var> UTC In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Oct <var data-var='date'> 5</var>, <var data-var='time'>12:01</var> UTC Scheduled - Ethereum Sepolia will undergo a scheduled hard fork on October 6, 2026 at 13:53:36 UTC. Our nodes have been upgraded ahead of the fork and no downtime is expected.

Ethereum Sepolia Hard Fork Upgrade

Oct <var data-var='date'> 6</var>, <var data-var='time'>09:13</var> UTC Resolved - Starknet Mainnet block production has resumed and Alchemy Starknet endpoints are serving current chain data as expected. Applications that cached stale state during the stall should recover on their next refresh. Thank you for your patience while the network recovered. Oct <var data-var='date'> 6</var>, <var data-var='time'>08:52</var> UTC Investigating - Starknet Mainnet is currently not producing new blocks following a recent network-wide upgrade. This is a chain-level condition affecting the Starknet network as a whole and is not isolated to Alchemy infrastructure. We are actively coordinating with the Starknet team on mitigation steps and will share an update as soon as we have more information.

Starknet Mainnet block production stalled

Sep <var data-var='date'>30</var>, <var data-var='time'>13:30</var> UTC Resolved - We observed chain stalls across our networks affecting requests in the USE region. This occurred between the 13:12:00 UTC to 13:30:15 UTC, and has been resolved. Sep <var data-var='date'>30</var>, <var data-var='time'>13:12</var> UTC Monitoring - A fix has been implemented and we are monitoring the results.

US East Stalled Block Number

Sep <var data-var='date'>29</var>, <var data-var='time'>16:30</var> UTC Completed - The scheduled maintenance has been completed. Sep <var data-var='date'>29</var>, <var data-var='time'>15:53</var> UTC In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Sep <var data-var='date'>29</var>, <var data-var='time'>13:55</var> UTC Update - The upgrade will activate at target block 273,966,500, so the current timing is an estimate. Sep <var data-var='date'>29</var>, <var data-var='time'>13:53</var> UTC Scheduled - Sei testnet is undergoing a scheduled network upgrade. During the upgrade we expect brief downtime of up to a few minutes on Sei testnet endpoints, with possible elevated error rates or latency around the transition. Sei mainnet is not affected. No action is required from customers. We will post an update once the upgrade is complete.

Sei Testnet -- Scheduled Network Upgrade

Sep <var data-var='date'>23</var>, <var data-var='time'>20:36</var> UTC Update - Maintenance is complete and traffic has been restored to US West. Sep <var data-var='date'>23</var>, <var data-var='time'>19:00</var> UTC Completed - The scheduled maintenance has been completed. Sep <var data-var='date'>23</var>, <var data-var='time'>15:00</var> UTC In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Sep <var data-var='date'>23</var>, <var data-var='time'>12:42</var> UTC Update - One of our bare metal infrastructure providers will perform an infrastructure upgrade in US West from 15:00 to 19:00 UTC. During this migration window, traffic will be temporarily forwarded to other regions. We expect service to remain available. Sep <var data-var='date'>23</var>, <var data-var='time'>12:40</var> UTC Scheduled - One of our bare metal infrastructure providers will perform an infrastructure upgrade in US West from 15:00 to 19:00 UTC. During this migration window, traffic will be temporarily forwarded to other regions. We expect service to remain available.

US West Scheduled Infrastructure Maintenance

Sep <var data-var='date'>23</var>, <var data-var='time'>18:15</var> UTC Resolved - This incident has been resolved. Sep <var data-var='date'>22</var>, <var data-var='time'>13:45</var> UTC Identified - The issue has been identified and a fix is being implemented. Sep <var data-var='date'>22</var>, <var data-var='time'>10:27</var> UTC Investigating - We’re currently investigating a finalized block stall on Unichain Mainnet that is impacting requests using the finalized tag in our USE region.

Finalized Block Stall on Unichain Mainnet in USE

Sep <var data-var='date'>22</var>, <var data-var='time'>18:28</var> UTC Resolved - This incident has been resolved. Sep <var data-var='date'>22</var>, <var data-var='time'>17:15</var> UTC Investigating - We are seeing increased error rates and higher latency in our US West region. We are currently investigating.

Increased error rates and latency in US West region

Sep <var data-var='date'>21</var>, <var data-var='time'>17:35</var> UTC Resolved - A subset of requests on Arc Testnet experienced increased latency starting ~17:35 UTC. This incident has been resolved.

Arc Testnet - Increased Latency

Sep <var data-var='date'>21</var>, <var data-var='time'>17:00</var> UTC Completed - The scheduled maintenance has been completed. Sep <var data-var='date'>21</var>, <var data-var='time'>13:02</var> UTC In progress - A subset of getBalanceByOwnerAtSlot and getTokenAccountsByOwnerAtSlot requests on Solana Mainnet are currently unavailable.

Solana Mainnet - Custom Method Maintenance

Sep <var data-var='date'>11</var>, <var data-var='time'>10:05</var> UTC Resolved - This incident has been resolved. Sep <var data-var='date'>11</var>, <var data-var='time'>09:02</var> UTC Monitoring - A routing change has been implemented, and we are observing latency returning to normal levels. Sep <var data-var='date'>11</var>, <var data-var='time'>08:43</var> UTC Investigating - We are investigating elevated latency affecting getSignaturesForAddress requests on Solana Mainnet in the US East region.

Elevated Latency for Solana Mainnet

Sep <var data-var='date'> 9</var>, <var data-var='time'>01:14</var> UTC Resolved - This incident has been resolved. Sep <var data-var='date'> 8</var>, <var data-var='time'>22:14</var> UTC Investigating - A subset of requests on Robinhood Mainnet are experiencing increased latency in the APAC region.

Robinhood Mainnet - Increased Latency in APAC

Sep <var data-var='date'> 4</var>, <var data-var='time'>17:28</var> UTC Resolved - The upstream feed relay instabilities have been resolved, and latency and block lag have returned to normal. Sep <var data-var='date'> 4</var>, <var data-var='time'>16:54</var> UTC Monitoring - A fix has been implemented and we are monitoring the results. Sep <var data-var='date'> 4</var>, <var data-var='time'>16:23</var> UTC Update - We are investigating elevated latency and block lag affecting a subset of requests due to upstream feed relay instabilities. Our team is actively working to restore normal performance and will provide an update soon. Sep <var data-var='date'> 4</var>, <var data-var='time'>16:22</var> UTC Investigating - We are investigating elevated latency and block lag affecting a subset of requests. Our team is actively working to restore normal performance and will provide an update soon.

Elevated Latency and Block Lag

Sep <var data-var='date'> 4</var>, <var data-var='time'>13:32</var> UTC Resolved - Service is now fully recovered, nodes are caught up with the chain and error rates are back to baseline! Instability upstream on Robinhood chain was concluded as a root cause. Sep <var data-var='date'> 4</var>, <var data-var='time'>12:56</var> UTC Update - We are continuing to investigate this issue. Team noticed that this is driven by an upstream issue on Robinhood Mainnet - a sharp increase in on-chain activity and block size, combined with brief instability on Robinhood's sequencer feed. This caused some of our nodes to briefly fall behind the chain tip and, during the worst of it, a short window of failed requests. Sep <var data-var='date'> 4</var>, <var data-var='time'>12:50</var> UTC Investigating - We are currently investigating this issue.

Robinhood Mainnet - Elevated latencies and Increased Request Failures

Sep <var data-var='date'> 3</var>, <var data-var='time'>16:54</var> UTC Resolved - The incident has been resolved. We are continuing to monitor the situation. Sep <var data-var='date'> 3</var>, <var data-var='time'>16:21</var> UTC Update - We are observing an increase in successful responses and are monitoring the situation closely. Sep <var data-var='date'> 3</var>, <var data-var='time'>16:21</var> UTC Monitoring - We are no longer seeing elevated errors in local testing and are monitoring the situation closely. Sep <var data-var='date'> 3</var>, <var data-var='time'>16:11</var> UTC Identified - The issue has been identified and a fix is being implemented. Sep <var data-var='date'> 3</var>, <var data-var='time'>15:41</var> UTC Investigating - We're investigating elevated 403s affecting multiple teams across multiple regions. Team is actively working on resolution.

Elevated API Errors Across Multiple Networks

Sep <var data-var='date'> 3</var>, <var data-var='time'>03:48</var> UTC Resolved - This incident has been resolved. Sep <var data-var='date'> 3</var>, <var data-var='time'>03:20</var> UTC Monitoring - A fix has been implemented and we are monitoring the results. Sep <var data-var='date'> 3</var>, <var data-var='time'>02:58</var> UTC Investigating - We are currently investigating this issue.

Increased latency for wallet_getCallsStatus across networks

Sep <var data-var='date'> 2</var>, <var data-var='time'>15:00</var> UTC Completed - The scheduled maintenance has been completed. Sep <var data-var='date'> 2</var>, <var data-var='time'>14:30</var> UTC In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Sep <var data-var='date'> 2</var>, <var data-var='time'>13:38</var> UTC Scheduled - Monad Mainnet will undergo a planned network upgrade at 14:30 UTC today. No downtime or customer impact is expected. We will monitor the upgrade and provide updates if needed. Upgrade details: <https://docs.monad.xyz/node-ops/upgrade-instructions/v0.16.1|docs.monad.xyz/node-ops/upgrade-instructions/v0.16.1>

Scheduled Maintenance — Monad Mainnet

Aug <var data-var='date'>31</var>, <var data-var='time'>15:34</var> UTC Resolved - All networks latencies are back to baseline. Aug <var data-var='date'>31</var>, <var data-var='time'>15:18</var> UTC Update - Arbitrum, BSC and Robinhood continue to exhibit slightly higher latencies than baseline. All other networks are back to baseline. Aug <var data-var='date'>31</var>, <var data-var='time'>15:03</var> UTC Update - All networks are seeing recovery. We're continuing to monitor. You might still see elevated latencies on Arbitrum, BSC and Robinhood. We expect them to come back to baseline shortly. Aug <var data-var='date'>31</var>, <var data-var='time'>15:00</var> UTC Update - Arbitrum Mainnet is seeing recovery. We're continuing to monitor. Aug <var data-var='date'>31</var>, <var data-var='time'>15:00</var> UTC Update - Robinhood Mainnet is seeing recovery. We're continuing to monitor. Aug <var data-var='date'>31</var>, <var data-var='time'>14:57</var> UTC Identified - The issue has been identified and a fix is being implemented. Aug <var data-var='date'>31</var>, <var data-var='time'>14:39</var> UTC Investigating - We’re investigating elevated error rates and latency affecting some API requests across multiple regions. Our team is actively working to restore normal performance.

Elevated API Errors and Latency

Aug <var data-var='date'>31</var>, <var data-var='time'>13:38</var> UTC Resolved - Incident is resolved and blocks are being produced again - confirmed by Cronost team: https://x.com/CronosNetwork/status/2094417832394301499 Aug <var data-var='date'>31</var>, <var data-var='time'>12:15</var> UTC Investigating - Network wide incident is affecting Cronos Mainnet and block production has been halted: https://x.com/CronosNetwork/status/2094072333434769703

[Network Wide] Cronos Mainnet Halted

Aug <var data-var='date'>29</var>, <var data-var='time'>19:45</var> UTC Resolved - The elevated latencies affecting Ethereum Mainnet Data APIs have been resolved. Aug <var data-var='date'>29</var>, <var data-var='time'>18:20</var> UTC Identified - The issue has been identified and a fix is being implemented. Aug <var data-var='date'>29</var>, <var data-var='time'>18:13</var> UTC Investigating - A subset of requests on Ethereum Mainnet are experiencing elevated latency.

Ethereum Mainnet - Elevated Data API Latencies

Aug <var data-var='date'>27</var>, <var data-var='time'>23:40</var> UTC Resolved - This incident has been resolved! WebSocket subscription delivery for X Layer Mainnet in our US East region has returned to normal. HTTP requests were not affected at any point during this incident Aug <var data-var='date'>27</var>, <var data-var='time'>18:38</var> UTC Monitoring - A fix has been implemented, and we are monitoring the results. Aug <var data-var='date'>27</var>, <var data-var='time'>16:18</var> UTC Investigating - WebSocket connections to X Layer Mainnet in our US East region are being established normally, but subscription events may be delayed or missing. HTTP requests are not affected.

X Layer Mainnet - Delayed WebSocket Event Delivery in US East

Aug <var data-var='date'>27</var>, <var data-var='time'>20:47</var> UTC Resolved - This incident has been resolved. Aug <var data-var='date'>27</var>, <var data-var='time'>20:05</var> UTC Investigating - A subset of Data API requests on Robinhood Mainnet are experiencing increased latency and error rates.

Robinhood Mainnet - Increased Data API Latency and Error Rates

Aug <var data-var='date'>26</var>, <var data-var='time'>22:12</var> UTC Resolved - This incident has been resolved. Between approximately 21:58 UTC and 22:12 UTC, some API requests across multiple networks experienced elevated latency, primarily affecting Token API and Portfolio API balance lookups. All services are currently operating normally. We will continue to investigate the underlying cause to prevent recurrence! Aug <var data-var='date'>26</var>, <var data-var='time'>21:58</var> UTC Investigating - We are currently investigating reports of elevated latency affecting Token API balance lookups and related endpoints across multiple networks. We will provide an update as more information becomes available!

Multiple Networks - Increased Latencies (Token/Portfolio API)

Aug <var data-var='date'>26</var>, <var data-var='time'>21:59</var> UTC Resolved - This incident has been resolved. Aug <var data-var='date'>26</var>, <var data-var='time'>12:30</var> UTC Investigating - We're observing a network wide chain stalled on Xdc Testnet - stopped at block: 85974607 See Xdc Testnet block explorer here: https://testnet.xdcscan.com/block/85974607

[Network Wide] Xdc Testnet Chain Stalled

Aug <var data-var='date'>25</var>, <var data-var='time'>18:30</var> UTC Resolved - This incident has been resolved. Aug <var data-var='date'>25</var>, <var data-var='time'>13:31</var> UTC Investigating - We're observing a network wide chain stalled on Zetachain mainnet - stopped at block: 18349554 See Zetachain block explorer here: https://zetascan.com/block/18349554

Is Alchemy down?

Alchemy status is UP

Lastest published events

Ethereum Sepolia Hard Fork Upgrade

Starknet Mainnet block production stalled

US East Stalled Block Number

Alchemy Services, Components and Regions

Recent Alchemy events

Sei Mainnet Consensus Upgrade

Ethereum Sepolia Hard Fork Upgrade

Starknet Mainnet block production stalled

US East Stalled Block Number

Sei Testnet -- Scheduled Network Upgrade

US West Scheduled Infrastructure Maintenance