BoltRPC

Denim from @buildonbase activates on Base mainnet Thu 5 Nov at 18:00 UTC. Our Base endpoints already run base/base v1.5.1, the release it requires. 200 ms blocks replace Flashblocks, and RPC responses gain timestampMs. Reading Flashblocks? Move before Thursday.

Five days, 14 mainnets on new node releases: Ethereum, Base, Optimism, Unichain, Ink, BOB, Katana, Plasma, Scroll, Sui, Avalanche, Tron, Monad and ZKsync, plus the Sepolia and Hoodi testnets. All between 21 and 25 Oct. Your key didn't change. Sui now takes gRPC only.

OP Stack update: op-node v1.19.11 and op-reth v2.6.1 from @OPLabsPBC are live on our Optimism, Ink and BOB endpoints. Both stop trusting the compromised eMudhra certificates (CVE-2026-111943). No changes needed on your side.

Sui's mainnet-v1.82.3 from @SuiNetwork removes JSON-RPC from full nodes, and our Sui endpoints run it. sui_* and suix_* calls through BoltRPC now return HTTP 410 pointing to gRPC. Sui gRPC (sui.rpc.v2) works on the same key, gRPC-Web included. Still on JSON-RPC? Port to gRPC.

Core devs postponed Glamsterdam on Hoodi, due today at 17:42 UTC. Geth v1.17.10 (@go_ethereum) and Lighthouse v8.3.2 (@sigp_io) remove it, and our nodes run both, Hoodi included. Hoodi nodes on Geth v1.17.9 or Lighthouse v8.3.0/8.3.1 still fork then. No action on BoltRPC.

An eth_newFilter id only exists on the node that created it. Behind a load balancer, eth_getFilterChanges can land on a node that never heard of it. Our gateway tags each filter id with its node, so follow-up calls reach it, over HTTP and WebSocket. No sticky sessions needed.

Hoodi's Glamsterdam fork is on hold, but Geth v1.17.9 and Lighthouse v8.3.x still schedule it for 26 Oct. Running your own Hoodi node? Check your execution and consensus clients for releases that drop the fork, or it can fork off at 17:42 UTC.

Celo update: op-node celo-v2.2.4 and op-reth celo-v1.0.7 are live on our Celo endpoints. The op-node release from @CeloDevs fixes a deadlock in p2p peer discovery that could leave a node waiting indefinitely. No changes needed on your side.

Denim from @buildonbase reaches Base Sepolia today. Mainnet is planned for November. Base goes from one canonical block every two seconds to five per second, and Denim replaces Flashblocks. Our mainnet endpoints run base/base v1.5.0. Reading Flashblocks? Plan the move now.

Alpenglow from @anza_xyz activates in epoch 1064, expected Wed 21 Oct. Our Solana endpoints run Agave 4.3.x. Finality drops to a target of about 150 ms, and confirmed and finalized become one state. Commitment levels keep working on the day. Then use finalized.

If your app pipelines WebSocket requests to Nethermind nodes, match responses by id. On 2.2.0 they can come back out of order.

Chain uptime and your app's uptime are two different things. A healthy chain can't help if your app reaches it through one RPC endpoint. Test your failover before the day you need it.

Sonic v2.2.5 from @SonicLabs is live on our endpoints. Custom JavaScript tracers are now off by default, and we keep them off. debug_trace* with a custom JS tracer fails with "custom tracer is not permitted". Using one? Built-in tracers work as before.

Geth v1.17.8 from @go_ethereum is a security release. It closes several DoS risks; most fixes cover bugs only possible after Amsterdam. It also fixes eth_simulateV1 transfer logs and eth_createAccessList for senders with no balance. Run your own Geth node? Upgrade.