Supra Namespace - Chains

CAIP-2

For context, see the CAIP-2 specification.

Rationale

In CAIP-2 a general blockchain identification scheme is defined. This is the implementation of CAIP-2 for Supra. Blockchains in the “supra” namespace are identified by their numeric chain_id, assigned at genesis. Each network is maintained by a set of validators with its own REST RPC endpoints. These chain IDs require no transformations to be used as conformant CAIP-2 references.

Syntax

The namespace “supra” refers to the Supra open-source blockchain platform.

Reference Definition

The definition for this namespace will use the chain_id as an identifier for different Supra chains. The chain ID is a positive integer assigned at genesis:

Resolution Method

To resolve a blockchain reference for the Supra namespace, make an HTTP GET request to path /rpc/v3/transactions/chain_id on the REST RPC of any of a given Networks’ fullnodes, for example, for Mainnet:

curl https://rpc-mainnet.supra.com/rpc/v3/transactions/chain_id

// Response
8

The response is the chain_id as an integer that can be used directly as the CAIP-2 reference.

Backwards Compatibility

Not applicable

Test Cases

This is a list of manually composed examples

# Supra Mainnet
supra:8

# Supra Testnet
supra:6

References

• REST RPC - REST RPC reference in Supra official documentation
• Networks - Supra network information and endpoints

Copyright

Copyright and related rights waived via CC0.

Citation

Please cite this document as:

Bharat Jain, "namespaces/supra-caip2: Supra Namespace - Chains [DRAFT]," Chain Agnostic Namespaces, supra-caip2, July 2026 / July 2026. [Online serial]. Available: https://github.com/ChainAgnostic/namespaces/supra-caip2.md