Bind Referral Code

Bind the current user (Trader) to a referrer via their referral code. Users who are already bound can rebind to switch referrers.

POST /referral/bind
Authorization: Bearer <token>
Content-Type: application/json

Request Body

{
  "code": "4DDDC2D4",
  "signature": "0x...",
  "timestamp": 1772010600
}

Field	Type	Required	Description
code	string	Yes	The referral code to bind to
signature	string	Yes	EIP-712 signature
timestamp	uint64	Yes	Unix timestamp (seconds), must be within 5 minutes

EIP-712 Signature

TypeHash: BindReferralCode(address wallet,string code,uint256 timestamp)

{
  "primaryType": "BindReferralCode",
  "types": {
    "BindReferralCode": [
      { "name": "wallet", "type": "address" },
      { "name": "code", "type": "string" },
      { "name": "timestamp", "type": "uint256" }
    ]
  },
  "message": {
    "wallet": "0x<your_address>",
    "code": "4DDDC2D4",
    "timestamp": 1772010600
  }
}

Response

{
  "success": true,
  "referrer_address": "0x29f721b203a9fc9c5dde35a739d8b8e0e4605489",
  "referrer_code": "4DDDC2D4"
}

Field	Type	Description
success	bool	Whether binding succeeded
referrer_address	string	The referrer's wallet address
referrer_code	string	The referral code that was bound

Error Codes

HTTP	Code	Description
400	TIMESTAMP_EXPIRED	Timestamp exceeds 5-minute validity window
400	SELF_REFERRAL	Cannot use your own referral code
400	SAME_REFERRER	Already bound to this referrer
401	SIGNATURE_INVALID	EIP-712 signature verification failed
404	CODE_NOT_FOUND	Referral code does not exist
500	BIND_FAILED	Server error

Code Examples

Python

import time, requests
from eth_account import Account
from eth_account.messages import encode_typed_data

BASE_URL = "https://api.ztdx.io"
JWT_TOKEN = "your_jwt_token"
PRIVATE_KEY = "your_private_key"

wallet = Account.from_key(PRIVATE_KEY)
timestamp = int(time.time())
code = "4DDDC2D4"

typed_data = {
    "types": {
        "EIP712Domain": [
            {"name": "name", "type": "string"},
            {"name": "version", "type": "string"},
            {"name": "chainId", "type": "uint256"},
        ],
        "BindReferralCode": [
            {"name": "wallet", "type": "address"},
            {"name": "code", "type": "string"},
            {"name": "timestamp", "type": "uint256"},
        ],
    },
    "primaryType": "BindReferralCode",
    "domain": {"name": "ZTDX", "version": "1", "chainId": 421614},
    "message": {"wallet": wallet.address, "code": code, "timestamp": timestamp},
}

signable = encode_typed_data(full_message=typed_data)
signed = wallet.sign_message(signable)

resp = requests.post(
    f"{BASE_URL}/referral/bind",
    headers={"Authorization": f"Bearer {JWT_TOKEN}", "Content-Type": "application/json"},
    json={"code": code, "signature": signed.signature.hex(), "timestamp": timestamp},
)
print(resp.json())
# {"success": true, "referrer_address": "0x29f7...5489", "referrer_code": "4DDDC2D4"}