components:
  schemas:
    WalletAsset:
      description: Canonical managed-wallet asset identified by chain, token symbol, and optional contract address.
      type: object
      additionalProperties: false
      required:
        - chain
        - tokenSymbol
      properties:
        chain:
          description: Canonical blockchain network for the asset.
          $ref: ../../external/chain_network.yaml#/components/schemas/ChainNetwork
        tokenSymbol:
          description: Upper-case asset symbol.
          type: string
        contractAddress:
          description: Normalized contract address for token assets. Omitted for native assets.
          type: string