> For the complete documentation index, see [llms.txt](https://docs.silicon.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.silicon.network/builders/opencohort/framework/developer/airdrop/reward-type.md).

# Reward Type

This page outlines the amount receivable for each of the four RewardTypes supported by Airdrop in OpenCohort.

## Weight

* Calculated based on the same snapshot.
* **Token amount receivable**: (Recipient’s `weight` within the snapshot) / (`totalWeight` of the snapshot ) \* (`totalAmount` of airdropped tokens)
* **Total eligible recipients**: `totalCount` of the snapshot (all Merkle Tree leaves)

## Count

* Calculated based on the same snapshot.
* **Token amount receivable**: (`totalAmount` of airdropped tokens) / (`totalCount` of the snapshot)
* **Total eligible recipients**: `totalCount` of the snapshot (all Merkle Tree leaves)

## Constant

* Calculated based on the same snapshot.
* **Token amount receivable**: A fixed amount of `amountPer` for each recipient
* **Total eligible recipients**: Up to `totalAmount / amountPer` of the first Merkle Tree leaves are eligible to receive tokens.
  * The first `totalAmount` / `amountPer` leaves in the Merkle Tree
* If the total number of cohort users is smaller than `totalAmount / amountPer`, then effectively every user receives tokens, making it function similarly to the **Count** type.

## Unit

* Calculated based on each user's activity (weight) in the latest snapshot.
* **Token Amount Receivable**: Users receive tokens in "amountPer" units based on their weight in the snapshot.
  * (`amountPer` of the Airdrop) \* (Recipient’s `weight` within the snapshot)
* **Total Eligible Recipients**: Determined on a first-come, first-served basis, but the exact number of eligible recipients isn’t fixed.
  * Total receivable weight: (`totalAmount` of airdropped tokens) / `amountPer`
* In this type, if a user’s weight increases, they may claim additional tokens according to their **added weight**\*`amountPer`. 
* However, if a user’s weight decreases, it does not reduce their previously claimed amount.


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