im just Completely lost with my code, i have now tried for multiple hours and used every ai tool imaginable but i just can get it rigth. Using the BitUnix api via responses i always get a sigature error. This is my code: def auth_headers(self, query_params: dict = None, body: dict = None) -> dict: """ Generate signed authentication headers for Bitunix API using strict formatting: - query_params: dict used in signature (for GET requests or query parameters) - body: dict used in signature (for POST requests) """ import json import hashlib def sha256_hex(input_string): return hashlib.sha256(input_string.encode('utf-8')).hexdigest() # Generate nonce (32-bit random string) and timestamp nonce = str(int(time.time() * 1000))[-6:] # Last 6 digits like "123456" timestamp = str(int(time.time() * 1000)) # Milliseconds timestamp # 1. Sort query params in ascending ASCII order by key query_str = "" if query_params: # Convert all values to strings and sort by key sorted_params = sorted(query_params.items()) query_str = ''.join(f"{k}{str(v)}" for k, v in sorted_params) # 2. Convert body to string with no spaces (if present) body_str = "uid1234" if body: body_str = json.dumps(body, separators=(',', ':'), ensure_ascii=True) print(body_str) # 3. First hash: SHA256(nonce + timestamp + apiKey + queryParams + body) pre_digest = nonce + timestamp + self.api_key + query_str + body_str digest = sha256_hex(pre_digest) # 4. Final sign: SHA256(digest + secretKey) sign = sha256_hex(digest + self.secret_key) # Debug info print("Nonce:", nonce) print("Timestamp:", timestamp) print("Query String:", query_str) print("Body String:", body_str) print("Pre-digest:", pre_digest) print("Digest:", digest) print("Sign:", sign) return { 'api-key': self.api_key, 'sign': sign, 'nonce': nonce, 'timestamp': timestamp, 'Content-Type': 'application/json' } def change_marginmode(self): """ Change margin mode following the exact signature pattern from documentation. """ url = 'https://fapi.bitunix.com/api/v1/futures/account/change_margin_mode' # Query parameters must be included in signature query_params = { "symbol": "BTCUSDT", "marginCoin": "USDT", "marginMode": "ISOLATION" } when i now call the method i get this error: {'code': 10007, 'data': None, 'msg': 'Signature Error'} does anyone know what i did wrong? Continue reading...
