According to the RFC 7515 (JWS), the "typ" header parameter is supposed to indicate a media-type (https://www.iana.org/assignments/media-types/media-types.xhtml). In addition, the JWT spec section 5.1 clarifies that if used, it should be set to "JWT". However, the TraTs draft requires this to be set to "txn_token". This is clearly not right. We need to find another way to identify a JWT to be a TraT.
According to the RFC 7515 (JWS), the "typ" header parameter is supposed to indicate a media-type (https://www.iana.org/assignments/media-types/media-types.xhtml). In addition, the JWT spec section 5.1 clarifies that if used, it should be set to "JWT". However, the TraTs draft requires this to be set to "txn_token". This is clearly not right. We need to find another way to identify a JWT to be a TraT.