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CHAIN33

CHAIN33 is an open-source, modular blockchain development framework written in Go. Its layered codebase includes blockchain data and synchronization, storage, transaction pooling, accounts, consensus interfaces, transaction execution, P2P and RPC networking, wallet functionality, system extensions, and command-line binaries. Developers can build a blockchain system on this foundation and extend application capabiliti

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

CHAIN33 — OpenViST project profile in Developer Tools.
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Understand the project

Practical overview

When it fits

Use CHAIN33 when developing a Go-based blockchain system and its modular core or application extensions. Its documented single-node command also provides a starting point for development and testing.

Who it is for

  • Go developers building a blockchain system from a modular codebase.
  • Teams integrating blockchain components such as transaction execution, storage, consensus interfaces, networking or application extensions.
  • Developers who want to compile and run a single-node environment for development and testing.

Documented uses

  • Build a blockchain system from a Go framework rather than assembling every core subsystem independently.
  • Work with documented components for chain synchronization and indexing, persistent storage, transaction pools and account handling.
  • Connect networking and client functions using P2P, gRPC, JSON-RPC or Ethereum RPC components.
  • Add application-level extensions through documented plugin and system interfaces.
Before you choose

Requirements & limits

The source repository is public and lists a BSD-3-Clause license. Building from source requires Go 1.21 or later.

  • The framework is written in Go and documents Go 1.21 or later as a build prerequisite.
  • The README requires the source checkout to use the path $GOPATH/src/github.com/33cn/chain33.
  • The repository documents a single-node development-and-testing run command, not a production deployment procedure.
  • Plugin developers are advised not to use the master branch and to use a release branch.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Build and start a single-node development environment

Compile CHAIN33 from source and start the documented single-node environment for development and testing.

Before you start

  • Go 1.21 or later
  • Place the source at $GOPATH/src/github.com/33cn/chain33
  • A chain33.toml configuration file

Steps

  1. Clone https://github.com/33cn/chain33.git into $GOPATH/src/github.com/33cn/chain33.

  2. Change to the repository directory and run make.

  3. Run chain33 -f chain33.toml to start the single-node environment.

Expected outcome

A compiled CHAIN33 project and a running single-node environment intended for development and testing.

Guide limitations

  • The documented run command assumes chain33 and chain33.toml are available in the working environment.
  • The README requires plugin developers to use a release branch rather than master.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
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Sources checked
10 October 2026
Original website title
33cn/chain33 · Official homepage title · retained in its source language
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