(registered 2026-03-19, last updated 2026-03-19)

Media type name: application

Media subtype name: vnd.deut+json

Required parameters: N/A

Optional parameters: N/A

Encoding considerations: 8bit

The format is a structured JSON-based container. Standard JSON encoding considerations apply.

Security considerations: The .deut format is a structured JSON-based container designed for visual art assets. It stores the user's raw intent (input_dna), system parameters, and compiled results (llm_output). The format is strictly declarative data and does not contain executable code, scripts, or macros. To ensure provenance, integrity, and prevent silent tampering, the format includes a built-in cryptographic fingerprint mechanism utilizing a SHA-256 hash. Security risks are limited to standard JSON parsing vulnerabilities, so parsers must ensure robust handling of malformed JSON.

Interoperability considerations: The .deut format acts as a "Digital Negative" for generative arts, ensuring non-destructive editing. The schema is platform agnostic; while designed for DEUTLI, it is explicitly open for implementation by any external tool. As this is the initial release of the format and specification, there are no older versions of either applications or the published specification that might lead to interoperability concerns.

Published specification: The official specification, validation protocol, and schema.json are publicly available in the open-source repository: https://github.com/deut-li/open-deut-format.

Applications which use this media: DEUTLI.

Fragment identifier considerations: The syntax and semantics of fragment identifiers for this type are as specified for "application/json". Additionally, fragment identifiers MAY be used to indicate specific elements within the JSON document, following the JSON Pointer syntax defined in RFC 6901.

Restrictions on usage: None. This media type is intended for open and general use across platforms.

Additional information:

1. Deprecated alias names for this type: None
2. Magic number(s): None
3. File extension(s): .deut
4. Macintosh file type code: None
5. Object Identifiers: None

General Comments: The .deut format is a structured JSON-based container for visual art assets ensuring non-destructive editing and provenance tracking via SHA-256 fingerprinting. It acts as the "Digital Negative" for generative arts. Unlike simple prompt text files, a .deut file stores the raw intent, the system parameters, and a cryptographic proof of integrity. This ensures that original user inputs are preserved separately from the LLM-generated prompt. While designed for DEUTLI, the schema is open for any tool to implement. The full specification and JSON schema are publicly maintained at: https://github.com/deut-li/open-deut-format

Person to contact for further information:

1. Name: Deut.li
2. Email: office&deut.li

Intended usage: COMMON

Author: Deut.li Engineering Team 

Change controller: Deut.li Engineering Team