diff --git a/spot-record.sh b/spot-record.sh
index c28d308..30f8e92 100755
--- a/spot-record.sh
+++ b/spot-record.sh
@@ -5,34 +5,79 @@ API_KEY="bg_28730a088b4b71c307ed5773b84d8267"
 API_SECRET="f7e4872f828c99612df009c3641421fc41d9dfb9cfc56dce3311fdaae70f5b29"
 PASSPHRASE="cQTVzepB6KuFWgWLgCpB6kW84iiqJr3u"
 
-# === ENDPOINT Y PARÁMETROS ===
+# === ENDPOINT ===
 METHOD="GET"
 BASE_URL="https://api.bitget.com"
 ENDPOINT="/api/v2/tax/spot-record"
 
-# Rango de tiempo: del 1 al 30 de enero de 2025 (máx. permitido)
-START_TIME="1735689600000"   # 2025-01-01 00:00:00 UTC
-END_TIME="1738272000000"     # 2025-01-31 00:00:00 UTC
-LIMIT="100"
+# === ARCHIVO SALIDA ===
+OUTPUT_FILE="spot-record-2025.csv"
+> "$OUTPUT_FILE"
 
-QUERY_STRING="startTime=${START_TIME}&endTime=${END_TIME}&limit=${LIMIT}"
-FULL_URL="${BASE_URL}${ENDPOINT}?${QUERY_STRING}"
+# === CABECERA CSV ===
+echo '"id","coin","spotTaxType","amount","fee","balance","ts","fecha_gmt1","bizOrderId"' > "$OUTPUT_FILE"
 
-# === TIMESTAMP oficial desde Bitget ===
-TIMESTAMP=$(curl -s https://api.bitget.com/api/v2/public/time | jq -r '.data.serverTime')
+# === FUNCIONES ===
+function timestamp() {
+  date -u -j -f "%Y-%m-%d" "$1" +"%s"
+}
 
-# === STRING A FIRMAR ===
-PREHASH="${TIMESTAMP}${METHOD}${ENDPOINT}?${QUERY_STRING}"
+function build_request() {
+  local START_TS_MS="$1"
+  local END_TS_MS="$2"
+  local LIMIT=100
+  local QUERY_STRING="startTime=${START_TS_MS}&endTime=${END_TS_MS}&limit=${LIMIT}"
+  local FULL_URL="${BASE_URL}${ENDPOINT}?${QUERY_STRING}"
 
-# === FIRMA BASE64 ===
-SIGNATURE=$(echo -n "${PREHASH}" | openssl dgst -sha256 -hmac "${API_SECRET}" -binary | base64)
+  local TIMESTAMP=$(curl -s https://api.bitget.com/api/v2/public/time | jq -r '.data.serverTime')
+  local PREHASH="${TIMESTAMP}${METHOD}${ENDPOINT}?${QUERY_STRING}"
+  local SIGNATURE=$(echo -n "${PREHASH}" | openssl dgst -sha256 -hmac "${API_SECRET}" -binary | base64)
 
-# === PETICIÓN FIRMADA ===
-curl -s "${FULL_URL}" \
-  -H "ACCESS-KEY: ${API_KEY}" \
-  -H "ACCESS-SIGN: ${SIGNATURE}" \
-  -H "ACCESS-TIMESTAMP: ${TIMESTAMP}" \
-  -H "ACCESS-PASSPHRASE: ${PASSPHRASE}" \
-  -H "Content-Type: application/json" \
-  -H "locale: en-US" \
-  | jq .
\ No newline at end of file
+  curl -s "${FULL_URL}" \
+    -H "ACCESS-KEY: ${API_KEY}" \
+    -H "ACCESS-SIGN: ${SIGNATURE}" \
+    -H "ACCESS-TIMESTAMP: ${TIMESTAMP}" \
+    -H "ACCESS-PASSPHRASE: ${PASSPHRASE}" \
+    -H "Content-Type: application/json" \
+    -H "locale: en-US"
+}
+
+# === BUCLE POR BLOQUES DE 30 DÍAS ===
+START_DATE="2025-01-01"
+END_DATE="2026-01-01"
+
+CURRENT_DATE="$START_DATE"
+
+while [[ "$CURRENT_DATE" < "$END_DATE" ]]; do
+  NEXT_DATE=$(date -j -v+30d -f "%Y-%m-%d" "$CURRENT_DATE" +"%Y-%m-%d")
+
+  START_MS=$(($(timestamp "$CURRENT_DATE") * 1000))
+  END_MS=$(($(timestamp "$NEXT_DATE") * 1000))
+
+  echo "🔄 Consultando de $CURRENT_DATE a $NEXT_DATE..."
+
+  RESPONSE=$(build_request "$START_MS" "$END_MS")
+
+  echo "$RESPONSE" | jq -r '
+    if .code == "00000" and (.data | length > 0) then
+      .data[] | [
+        .id,
+        .coin,
+        .spotTaxType,
+        .amount,
+        .fee,
+        .balance,
+        .ts,
+        (.ts|tonumber/1000 | strflocaltime("%Y-%m-%d %H:%M:%S +0100")),
+        .bizOrderId
+      ] | @csv
+    else
+      empty
+    end
+  ' >> "$OUTPUT_FILE"
+
+  sleep 2
+  CURRENT_DATE="$NEXT_DATE"
+done
+
+echo "✅ Exportado como $OUTPUT_FILE"
\ No newline at end of file