# Glossary

This document contains a list of all relevant OriginStamp terms and explanations. If you have any further questions, don't hesitate to contact us.

# API Key

The API Key is used for the automatic authentication of API requests. This API key can be generated in the OriginStamp Dashboard. The API Key must be added to the Authorization header of a request.

# Credits

The costs of a request is reflected in the costs of the credits. Each API Key or account has a maximum limit of credits. Please check the Pricing for more detailed information.

# Hash

A hash function is any function that can be used to map data of arbitrary size onto data of a fixed size. In the world of OriginStamp hash is also used as a synonym for the SHA-256 in HEX representation of a digital content.

# Webhook

A webhook is an automated notification when a tamper-proof timestamp was created.