(registered 2019-10-14, last updated 2019-10-14) Type name: application Subtype name: atsc-rdt+json Required parameters: N/A Optional parameters: N/A Encoding considerations: binary Constrained to UTF-8. See RFC 8259, Section 8.1. Security considerations: This media type inherits the issues common to all JSON media types - see RFC 8259, Section 12. This media format is used to describe broadcast and broadband services. This format is highly susceptible to manipulation or spoofing for attacks desiring to mislead a receiver about a URL for signaling, reporting, or other services. Both integrity protection and source authentication are recommended to prevent misleading of processors. This type does not employ executable content, but since it is explicitly extensible then executable content could appear in an extension. This media type does not provide any confidentiality protection and instead relies on the transport protocol that carries it to provide such security, if needed. This media type also includes URL references which if present must be dereferenced in order to properly interpret the content. This creates additional general security considerations. Decoders should make every effort to validate the origin against other transport signaling, if present. Interoperability considerations: ATSC A/336 specifies the format of conforming messages and the interpretation thereof. Published specification: This media type registration is an integral part of ATSC A/336, “Content Recovery in Redistribution Scenarios”, Annex E. The payload is defined in Section 5.4.3 of that document. This specification, which contains the JSON schema for the content in Annex B, is available at www.atsc.org/standards. Applications that use this media type: ATSC 3.0 television and Internet encoders, decoders and other facility and consumer equipment. Additional information: N/A Person & email address to contact for further information: Editor, Advanced Television Systems Committee (jwhitaker&atsc.org) Intended usage: COMMON Restrictions on usage: N/A Author: ATSC. Change controller: ATSC.