Haikerongtong
Channel Overview
Beijing Haikerongtong (海科融通) is an aggregated payment channel. DaxPay integrates in ISV mode (product hkrt_pay), covering WeChat, Alipay, and QuickPass QR and in-app collection. With MD5 signing and no certificates, it is one of the lightest extended channels to integrate.
Haikerongtong is a commercial-edition extended channel; after purchasing the flagship edition the official team assists with onboarding and integration. See the channel overview.
Supported Payment Methods
| Underlying rail | Supported methods |
|---|---|
| Barcode, JSAPI (Official Account), mini-program | |
| Alipay | Barcode, QR code, JSAPI |
| UnionPay (QuickPass) | Barcode, QR code |
WeChat JSAPI and mini-program payments require a bound WeChat app (AppId) in the channel configuration.
Configuration Structure
Haikerongtong keys are a product-level global configuration; the channel merchant registers the merchant number and the SaaS terminal:
- Configure the ISV keys (Haikerongtong product → Key Configuration, one global set):
| Group | Field | Notes |
|---|---|---|
| Basic | Service-provider number | agent_no |
| Access institution ID | access_id | |
| Keys | Signing key | access_key, used for both request signing and callback verification |
- Create the channel merchant: Merchant Workbench → Channel Merchants → Create, pick the product and fill in merchant name + Haikerongtong merchant number;
- Bind the SaaS terminal: configure the SaaS terminal number (pn) in the channel merchant detail.
Signature & Callback
- Request signing: MD5 uppercase (parameters sorted alphabetically, key appended at the end) — no certificates required;
- Async notifications are verified by the platform and acknowledged.
Notes
- Switch the environment before creating merchants: one set per environment;
- Ensure the server egress IP is whitelisted by Haikerongtong.