---
title: "DefinitionBase"
description: "what every definition carries beyond the unit"
section: concepts
address: /concepts/definitionbase
contract: 0476e35e6e275db5
---

# DefinitionBase

what every definition carries beyond the unit

[figure: DefinitionBase is a value at none scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | value |
| scope | none |
| key | carried by every definition |
| store | none |
| family | kernel |



## Fields


| field | type | required | note |
|---|---|---|---|
| `version` | `count` | yes | changed only by a new version; an old version stays what it was |
| `content_hash` | `hash` | yes |  |
| `state` | [Readiness](/concepts/readiness) | yes | ready, or not ready with its reason |
| `author` | [Caller](/concepts/caller) | yes |  |
| `original` | `id` | no | for a copy of a platform original: the original |
| `copied_from_version` | `count` | no | and the version it was copied from |



## Routes that use it
No route takes or returns DefinitionBase directly. The record holds it, and the objects that point at it reach it.