Better coin velocity logic

kraken_client.py

@@ -66,6 +66,19 @@ class KrakenClient:
 
     # ── Public market data ────────────────────────────────────────────────────
 
+    def get_ohlc(self, pair: str, interval: int = 60, lookback_hours: int = 50) -> list:
+        """
+        Fetch OHLC candles for a single pair.
+        interval is in minutes (60 = hourly).
+        Each candle: [time, open, high, low, close, vwap, volume, count]
+        """
+        since = int(time.time()) - lookback_hours * 3600
+        data = self._public("OHLC", params={"pair": pair, "interval": interval, "since": since})
+        for key, val in data.items():
+            if key != "last" and isinstance(val, list):
+                return val
+        return []
+
     def get_asset_pairs(self) -> dict[str, dict]:
         """Return all asset pair metadata keyed by Kraken's internal pair name."""
         return self._public("AssetPairs")