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@jtang17 jtang17 commented Jan 20, 2026

Add Aptos namespace

This PR introduces the Aptos namespace to the ChainAgnostic namespaces registry.

Added Files

  • aptos/README.md - Namespace profile for the Aptos ecosystem
  • aptos/caip2.md - CAIP-2 chain identification specification for Aptos

Summary

Aptos is a Layer 1 blockchain built on Move, featuring parallel execution via Block-STM for high throughput. This PR establishes the aptos namespace for identifying Aptos-based chains.

Chain Identification (CAIP-2)

Chains in the Aptos namespace are identified by their numeric chain_id, which is assigned at genesis and requires no transformation to be used as a CAIP-2 reference.

Network Chain ID CAIP-2 Identifier
Mainnet 1 aptos:1
Testnet 2 aptos:2

Resolution

Chain IDs can be resolved by querying the REST API of any Aptos fullnode:

curl https://fullnode.mainnet.aptoslabs.com/v1The chain_id field in the response provides the identifier.

References

@jtang17 jtang17 force-pushed the main branch 2 times, most recently from 8c2d6e1 to 89bcee8 Compare January 20, 2026 22:26
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