Great-circle (haversine) distance between two latitude/longitude points in km, miles and nautical miles, plus initial bearing and the geographic midpoint. Deterministic spherical math on the IUGG mean Earth radius. Use this when an agent needs to great-circle distance and bearing between coordinates.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.01 USDC | 0x8a0F...b0f6 |