DB_Update.html
Lab-only sync tool: Coins DB ↔ Binance SPOT TRADING symbols
DB Access Base URL
Binance URL
Optional Binance Proxy URL (if CORS blocks)
Add Throttle (ms between inserts)
Notes: Binance may block browsers via CORS and may block some serverless egress with 403. If direct Binance fetch fails, provide a proxy URL that returns JSON with CORS enabled.
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