Create EVM Static Address
For the same customer, create a static collection address that can correspond to multiple networks, applicable only to EVM networks.
Note: Under the same channelId, only one static collection address is allowed per network, and duplicate creation is not permitted.
Overview
This page documents thePOST /merchant/open/institution/fixedaddress/evm/save endpoint. The full schema, parameters, and examples are rendered from the linked OpenAPI definition above.
For the same customer, create a static collection address that can correspond to multiple networks, applicable only to EVM networks.
Notes
- Under the same
channelId, only one static collection address is allowed per network, and duplicate creation is not permitted. - Authentication uses the standard GatePay signed headers.
- This page documents the standard merchant endpoint.
- For shared signing rules, see /api-reference/version/100/en/common/securityAndSignature.
Headers
The clientId assigned when the merchant registers an application in the Gate merchant console.
"4186d0c6-6a35-55a9-8dc6-5312769dbff8"
Request signature. GatePay uses this signature to verify whether the request is valid.
Millisecond timestamp; the difference from server time must not exceed 30 seconds.
"1672905655498"
Random string. Must comply with HTTP header rules; recommended length is within 32 characters, composed of digits and letters.
"9578"
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.
Body
Merchant channel ID, Only letters, numbers, underscores (_), and hyphens (-) are allowed. The maximum length is 50 bytes.
Callback URL for collection notifications, The length must not exceed 128 bytes.
Network and currency information.

