---
title: Collection
description: Lexicon reference for the Collection record type in Hypercerts.
---

# Collection

`org.hypercerts.collection`

A collection groups activity claims into a named set. A single hypercert can belong to multiple collections at the same time — for example, one collection representing a multi-year reforestation program, another curating a funder's portfolio, and a personal "favorites" list. Collections make it easy to organize and surface hypercerts in different contexts without duplicating data.

Each collection has a title, description, and an array of strong references to the claims it contains.

For the full schema, see [`org.hypercerts.collection`](https://github.com/hypercerts-org/hypercerts-lexicon/blob/main/lexicons/org/hypercerts/collection.json) in the lexicon repo.