Wallet age and activity profile: POST a Base address, returns wallet age (since first inbound), total transaction count, ETH balance, last activity date, days since last tx, and a recent monthly activity heatmap. Verdict: fresh / established / dormant / inactive, with sybil/freshness flags. For AI agent due diligence to distinguish a brand-new throwaway wallet from an established active one before transacting. Not financial advice.

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