> For the complete documentation index, see [llms.txt](https://ottodata.gitbook.io/ottodata-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ottodata.gitbook.io/ottodata-docs/api-reference/basis.md).

# Basis

## Basis

The flagship feed. Concepts: [Basis: on-chain vs NASDAQ](https://ottodata.gitbook.io/ottodata-docs/concepts/basis-on-chain-vs-nasdaq).

### `GET /v1/basis/snapshot`

Latest basis tick for all 32 tokenized stocks.

```bash
curl https://api.ottodata.app/v1/basis/snapshot
```

```json
{
  "count": 32,
  "ticks": [
    {
      "ts": 1784189981,
      "ticker": "AAPL",
      "chainlink_px": 328.24995,
      "chainlink_updated_at": 1784145328,
      "ref_last": 327.5,
      "ref_prev_close": 327.5,
      "implied_mult": 1.0023,
      "ui_mult": 1.0,
      "oracle_paused": 0,
      "basis_bps": 22.9,
      "overnight_bps": 22.9
    }
  ]
}
```

| Field                         | Meaning                                                |
| ----------------------------- | ------------------------------------------------------ |
| `chainlink_px`                | On-chain Chainlink price (total-return)                |
| `chainlink_updated_at`        | When the feed last updated — stale off-hours by design |
| `ref_last` / `ref_prev_close` | Live NASDAQ reference / previous close                 |
| `implied_mult`                | Observed total-return multiplier                       |
| `ui_mult`                     | Token contract's `uiMultiplier()`, read on-chain       |
| `oracle_paused`               | Token contract pause flag                              |
| `basis_bps`                   | On-chain vs live reference, + = token premium          |
| `overnight_bps`               | On-chain vs previous close (the gap)                   |

### `GET /v1/basis/{ticker}`

Minute-level history for one ticker, newest first.

| Parameter | Type | Default | Notes    |
| --------- | ---- | ------- | -------- |
| `limit`   | int  | 500     | max 5000 |

```bash
curl "https://api.ottodata.app/v1/basis/NVDA?limit=100"
```

Returns `404` for unknown tickers.

### `GET /v1/feeds`

The registry: 32 equity + 20 crypto feeds with Chainlink proxy addresses and token contract addresses. This is the source of truth for what Otto tracks.


---

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