Methodology

Radar

The radar polls mempool.space/api/mempool/recent roughly every 25 seconds and keeps only transactions at or above the chosen threshold (50, 100, 500, or 1000 BTC). It also fetches the BTC/USD price from CoinGecko for the approximate dollar column. Everything is computed in your browser; nothing is stored.

The public /mempool/recent endpoint returns only the most recent handful of pending transactions — not the whole mempool. Large transactions arrive in bursts, so the view can be sparse between arrivals. This is the live tip, not a historical feed.

Brief

Given a transaction id, we fetch mempool.space/api/tx/{txid} and apply simple structural heuristics:

• One input → many outputs suggests a distribution or batch send.
• Many inputs → one output suggests a consolidation.
• One in → one out is treated as a simple transfer.
• Any output (or input) matching our public label list flags a labeled movement.

The summary carries an explicit certainty qualifier — probably, possibly, or high uncertainty — and the decision logic is shown step by step so you can audit it.

Labels

The directory is exact-address-match against a manually curated list. Each entry records a category, a confidence level, and a public source. It is intentionally small and conservative. We do not cluster addresses or infer ownership.

Limits, honestly

• Real ownership and intent are not knowable from public chain data alone.
• Address reuse and exchange internals mean labels can be stale or partial.
• The dollar values are approximate and depend on a live price feed that can fail.
• None of this is financial advice.

Sources

mempool.space REST API, CoinGecko simple price, and the per-entry sources cited in the label directory. Code is open on GitHub.