> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Chainstack Self-Hosted v2.37.0: August 13, 2026

> Blast and Mantle are now available as deployment targets, each covering Mainnet and Sepolia with an execution and rollup node pair.

This release adds Blast and Mantle as deployment targets, each covering Mainnet and Sepolia. Both are OP-Stack rollups, so every deployment pairs an execution node with a rollup node that derives the chain from Ethereum.

## Blast support

Blast Mainnet and Blast Sepolia are now available as deployment targets, pairing a blast-geth execution node with a blast-node rollup node.

* Blast Mainnet — chain ID 81457, explorer at [blastscan.io](https://blastscan.io)
* Blast Sepolia — chain ID 168587773, explorer at [testnet.blastscan.io](https://testnet.blastscan.io)
* Architecture — blast-geth serves the EVM JSON-RPC and WebSocket APIs, while blast-node derives the rollup from Ethereum and drives the execution node over the engine API
* Storage — blast-geth uses the Pebble backend with path-based state and full sync
* Sync — Mainnet bootstraps from a pre-built chain snapshot, and Sepolia syncs from genesis

## Mantle support

Mantle Mainnet and Mantle Sepolia are now available as deployment targets, pairing a mantle-geth execution node with a mantle-node rollup node.

* Mantle Mainnet — chain ID 5000, explorer at [mantlescan.xyz](https://mantlescan.xyz)
* Mantle Sepolia — chain ID 5003, explorer at [sepolia.mantlescan.xyz](https://sepolia.mantlescan.xyz)
* Architecture — mantle-geth serves the EVM JSON-RPC and WebSocket APIs, while mantle-node derives the rollup from Ethereum and drives the execution node over the engine API
* Peering — Mantle publishes no execution-layer bootnodes, so payloads reach mantle-geth over the engine API and mantle-node connects to the network's static peers
* Sync — both networks bootstrap from a pre-built chain snapshot

See [System requirements](/docs/self-hosted/requirements) for the full specification and [Supported clients and protocols](/docs/self-hosted/supported-clients-and-protocols) for the deployment catalog.

## Component versions

| Component                | Version |
| ------------------------ | ------- |
| cp-ui                    | v3.10.1 |
| cp-deployments-api       | v1.17.0 |
| cp-workflows             | v3.32.0 |
| cp-auth                  | v0.5.1  |
| cp-bolt                  | v1.12.0 |
| blockchain-node-exporter | v1.4.0  |