(registered 2026-10-27, last updated 2026-10-27)

Media type name: application

Media subtype name: vnd.BCG.TrustDeclaration

Required parameters: N/A

Optional parameters: N/A

Encoding considerations: binary

This is a JSON object expressing a trust declaration stored in a SCITT signed statement payload object in a COST envelope

Security considerations: 

1. There is no active content in the contents

2. The payload data is stored in an IETF SCITT Trust Registry (VDS). No additional protections are required beyond what SCITT already provides

3. A Trust declaration is submitted by a trusted party to a SCITT Transparency Service using TLS encryption where it is placed in a TRUST Queue for further processing by a Gatekeeper

4. A Trust declaration is a standar4d JSON object with no special formatting or packaging

5. The JSON Trust Declaration contains a metadata component that identifies a specific type of digital object representing a real-world object that a SCITT Trust Registry supports within the registry. This is a unique URL referncing a Trust Registry catalog of accepted digital object types, i.e. refers to a picture of an apple

Interoperability considerations: All IETF SCITT Trust Registries that support the storage of "Trust Declarations" within the Trust Registry VDS, which can be retrieved at a later date and time

Published specification: A Trust Declaration is described by an open source JSON schema definition available here https://raw.githubusercontent.com/rjb4standards/REA-Products/refs/heads/master/DigitalCertificates/SCITTTrustDeclarationSchema.json

Applications which use this media: SCITT Trust Registry (Transparency Service) places a Trust Declaration JSON object into the payload of a SCITT Signed Statement, see RFC 9943 for signed statement content

Fragment identifier considerations: None

Restrictions on usage: None

Additional information:

1. Deprecated alias names for this type: N/A
2. Magic number(s): N/A
3. File extension(s): json
4. Macintosh file type code: N/A
5. Object Identifiers: N/A

Person to contact for further information:

1. Name: Dick Brooks
2. Email: dick&businesscyberguardian.com

Intended usage: COMMON

Describes the contents of a SCITT Signed Statement Payload representing a "Trust Declaration" for a real world object represented by a digital object for storage in a SCITT VDS Trust Registry

Author/Change controller: Author: Dick Brooks