# CERTIUS

- **Website:** <https://certius.online>
- **Primary alias:** `certius.online`

## Description

CERTIUS is a digital certification service that helps individuals and organizations demonstrate the integrity and authenticity of electronic files. It creates a unique SHA-256 hash from the original file and applies dual timestamping using an RFC 3161 Time Stamping Authority and an OTS proof associated with the Bitcoin blockchain. Customers receive a PDF certificate containing a QR code, a verification link, and certification details. Files can be checked by uploading the original document and entering a code, following a link, or scanning the QR code. CERTIUS supports a broad range of formats, including PDF, Word, Excel, PowerPoint, text, HTML, images, audio, and video. The company says it stores the hash and certification evidence rather than the original file. Its web platform offers pay-as-you-go credit packages, with lower per-certificate costs at higher tiers. CERTIUS also provides a REST API for integrating file certification and public verification into other applications, alongside tools for checking credits, service status, and usage statistics.

## Industries

- 🖥 Computers Electronics and Technology
- 🖥 Computer Security _(under Computers Electronics and Technology)_
- 🖥 Blockchain and Cryptocurrency _(under Computers Electronics and Technology)_

## Logos & icons

- logo _(primary)_ — PNG — [download](https://cdn.brandfetch.io/idwJnY5zGz/w/1024/h/509/theme/dark/logo.png?c=1bxid64Mup7aczewSAYMX&t=1792084353108)

## Colors

| Name | Hex | Theme |
| --- | --- | --- |
| Martinique | #2a2a4a | accent |
| Torea Bay | #0f4491 | dark |
| Viking | #60b4e3 | light |

## Fonts

- Segoe UI — asset _(custom)_

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_Source: <https://brandfetch.com/certius.online>_
_See [/llms.txt](/llms.txt) for a full list of agent-readable pages, and [/auth.md](/auth.md) for how agents authenticate._