> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gate.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Query Supported Chains

> Query all available chains that support payment with the provided currency

## Overview

This page documents the `GET /payment/open/institution/v1/pay/address/chains` endpoint. The full schema, parameters, and examples are rendered from the linked OpenAPI definition above.

Query all available chains that support payment with the provided currency

## Notes

* Authentication uses the standard GatePay signed headers.
* This page documents the institution-path variant of the same API.
* Except for sub-account creation and sub-account query APIs, institution requests should include `X-GatePay-On-Behalf-Of`.
* For shared signing rules, see [/api-reference/version/100/en/common/securityAndSignature](/api-reference/version/100/en/common/securityAndSignature).


## OpenAPI

````yaml /api-reference/version/100/en/openapi/institution/address-payment-openapi.json GET /payment/open/institution/v1/pay/address/chains
openapi: 3.1.0
info:
  title: GatePay Address Payment API
  description: GatePay Address Payment APIs for crypto payment via blockchain address.
  version: 1.0.0
servers:
  - url: https://openplatform.gateapi.io
security: []
paths:
  /payment/open/institution/v1/pay/address/chains:
    get:
      summary: Query Supported Chains
      description: >-
        Query all available chains that support payment with the provided
        currency
      parameters:
        - $ref: '#/components/parameters/X-GatePay-Certificate-ClientId'
        - $ref: '#/components/parameters/X-GatePay-Signature'
        - $ref: '#/components/parameters/X-GatePay-Timestamp'
        - $ref: '#/components/parameters/X-GatePay-Nonce'
        - name: currency
          in: query
          required: true
          description: The currency to create the order in.
          schema:
            type: string
        - $ref: '#/components/parameters/X-GatePay-On-Behalf-Of'
      responses:
        '200':
          description: SUCCESS
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ChainsResponse'
              example:
                status: SUCCESS
                code: '000000'
                errorMessage: ''
                data:
                  currency: BTC
                  chains:
                    - chain: BTC
                      currency: BTC
                      full_curr_type: BTC
                      symbol: BTC
                      explorer_url: ''
                    - chain: HT
                      currency: BTC
                      full_curr_type: BTC_HT
                      symbol: BTC_HT
                      explorer_url: ''
                    - chain: BSC
                      currency: BTC
                      full_curr_type: BTC_BSC
                      symbol: BTC_BSC
                      explorer_url: ''
components:
  parameters:
    X-GatePay-Certificate-ClientId:
      name: X-GatePay-Certificate-ClientId
      in: header
      required: true
      description: Merchant client ID, obtained from GatePay platform
      schema:
        type: string
    X-GatePay-Signature:
      name: X-GatePay-Signature
      in: header
      required: true
      description: HMAC-SHA256 signature for request validation
      schema:
        type: string
    X-GatePay-Timestamp:
      name: X-GatePay-Timestamp
      in: header
      required: true
      description: >-
        Timestamp in milliseconds, must not differ from server time by more than
        5 minutes
      schema:
        type: string
    X-GatePay-Nonce:
      name: X-GatePay-Nonce
      in: header
      required: true
      description: Random nonce for replay attack prevention
      schema:
        type: string
    X-GatePay-On-Behalf-Of:
      name: X-GatePay-On-Behalf-Of
      in: header
      required: true
      schema:
        type: string
      description: >-
        Required delegated-subject header. Provide the initiating account ID for
        this request. For institution merchant APIs, this is typically the
        target sub-account ID; for institution charge and transfer APIs, it can
        be either an institution account ID or a sub-account ID.
  schemas:
    ChainsResponse:
      type: object
      properties:
        status:
          type: string
          description: Request status.
        code:
          type: string
          description: Response code.
        data:
          type: object
          properties:
            currency:
              type: string
              description: The currency to be paid
            chains:
              type: array
              description: >-
                The list of Gate chains where the payment can be made for the
                specified currency
              items:
                $ref: '#/components/schemas/ChainItem'
    ChainItem:
      type: object
      properties:
        chain:
          type: string
          description: The Gate chain
        currency:
          type: string
          description: The currency to be paid
        full_curr_type:
          type: string
          description: >-
            The symbol of the currency including the network information, an
            important parameter for placing orders
        symbol:
          type: string
          description: The trading symbol on the blockchain
        explorer_url:
          type: string
          description: The explorer link, explorer + token_address
        show_chain_name_en:
          type: string
          description: The English name of chain

````