> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cdp.coinbase.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Exchange Types

## Timestamps

```
2014-11-06T10:34:47.123456Z
```

Unless otherwise specified, all timestamps from API are returned in [ISO 8601](http://en.wikipedia.org/wiki/ISO_8601) with microseconds. Make sure you can parse the following ISO 8601 format. Most modern languages and libraries handle this without issues.

## Numbers

Decimal numbers are returned as strings to preserve full precision across platforms. When making a request, it is recommended that you also convert your numbers to strings to avoid truncation and precision errors.

Integer numbers (such as trade id and sequence) are unquoted.

## IDs

Most identifiers are UUID unless otherwise specified. When making a request which requires a UUID, both forms (with and without dashes) are accepted.

`132fb6ae-456b-4654-b4e0-d681ac05cea1` or `132fb6ae456b4654b4e0d681ac05cea1`