CAIP-30: Blockchain Reference for the Solana Namespace Source

Author Antoine Herzog, Josh Hundley
Status Superseded
Type Standard
Created 2021-08-03
Updated 2021-08-03
Requires 2
Superseded By

Simple Summary

This document is about the details of the Solana namespace and reference for CAIP-2.


In CAIP-2 a general blockchain identification scheme is defined. This is the implementation of CAIP-2 for Solana.


See CAIP-2.


Solana Namespace

The namespace “solana” refers to the Solana open-source blockchain platform.

Reference Definition

The definition for this namespace will use the genesisHash as an indentifier for different Solana chains. The method for calculating the chain ID is as follows with pseudo-code:

truncate(genesisHash, 32)

Resolution Method

To resolve a blockchain reference for the Solana namespace, make a JSON-RPC request to the blockchain node with method getGenesisHash, for example:

// Request
  "id": 1,
  "jsonrpc": "2.0",
  "method": "getGenesisHash"

// Response
  "id": 1,
  "jsonrpc": "2.0",
  "result": "4sGjMW1sUnHzSxGspuhpqLDx6wiyjNtZAMdL4VZHirAn"

The response will return as a value for the result a hash for the block with height 0 that should be truncated to its first 32 characters to be CAIP-30 compatible.


Blockchains in the “solana” namespace are identified by their chain ID as mentioned in the Reference Definition Section.

Backwards Compatibility

Not applicable

Test Cases

This is a list of manually composed examples

# Solana Mainnet

# Solana Devnet

Copyright and related rights waived via CC0.


Please cite this document as:

Antoine Herzog, Josh Hundley, "CAIP-30: Blockchain Reference for the Solana Namespace," Chain Agnostic Improvement Proposals, no. 30, August 2021. [Online serial]. Available: