Watching whale moves in n8n (and when I gave up and built a bot)

Описание и применение

Автор создал автоматический мониторинг крупных BTC-переводов и активности кошельков в n8n без ключей API, но из‑за масштабируемости и ограничений перенёс часть логики в отдельный бот и публичный канал.

Задача

Monitoring large BTC transfers and wallet activity without API keys, and scaling to many users and chains.

Результат

The author achieved real‑time whale‑move alerts without API keys, but scalability and token limits prompted a split into a public feed and a dedicated bot.

Рабочий процесс

• Schedule a 2‑minute trigger
• Set configuration (thresholds, RPC URLs, chat tokens)
• Check step: fetch latest block and mempool from mempool.space, filter txs ≥ minBtc, dedupe using static data
• Check step: poll native balances via JSON‑RPC, compare to previous state, alert on change ≥ minChange
• Notify step: send formatted messages to Telegram/Discord if tokens present

Доказательства

Every 2 minutes, Check looks at the newest mined block and the recent mempool, and keeps every transaction moving at least minBtc.

Источник

Addresses are comma-separated in Config, with an optional label (binance-hot=0xabc…). Switch chains by changing rpcUrl.

Источник

This works well for a handful of addresses. It got painful once I wanted: Many wallets, many users.

Источник