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

# Receipts

> LINK is required to send receipts for transactions processed through our system. These receipts include transaction amount, fees and LINK's legal disclosures.

## Transaction Receipts

LINK generates a receipt for every completed transaction processed through our system. Each receipt includes:

* Transaction amount and currency
* Applied fees and exchange rate
* LINK's legal disclosures and compliance references
* Transaction reference and timestamp

Receipts are available via the LINK Business Dashboard and can be retrieved programmatically using the [Fetch Transaction](/docs/fetch-transactions) endpoint.

***

## Proof of Payment — Accepted Formats

When submitting proof of payment for an B2B API onramp transaction (via `POST /otc/pop`), LINK accepts the following file types:

| Property     | Value               |
| ------------ | ------------------- |
| File types   | JPEG, PNG, GIF, PDF |
| Maximum size | 3 MB per file       |

Files are submitted as `multipart/form-data` with the field name `file`. See [Upload Proof of Payment](/docs/business-onramp) for full details.

***

[Prefunded Account](/docs/prefunded-account)

[Compliance](/docs/b2b-compliance)