# Data Dictionary - Long-tail Funding & OI Vault - Hyperliquid perps, hourly, cleaned Parquet

**Units:** vary by `metric` - read the per-row `unit` column (overall: mixed).  Times are UTC.

| column | type | description |
|---|---|---|
| `zone` | str | Coin (perp ticker) |
| `ts` | timestamp (UTC) | Hour (bar start) |
| `metric` | str | Metric: funding_apr_pct, open_interest, mark_px, oracle_px, premium_bps, day_ntl_vlm |
| `value` | float | Metric value. Units by metric: funding_apr_pct=annualized %, open_interest=coins, mark_px/oracle_px=USD, premium_bps=basis points, day_ntl_vlm=USD (trailing 24h) |
| `unit` | str | Unit (mixed - see metric) |
| `res_min` | int | Native resolution in minutes (60 = hourly) |

*Source: Hyperliquid (on-chain perpetual DEX) - public asset-context data.*