The following people participate in IDtrust as representatives of Supporting Entities. (OASIS members who choose to participate as IDtrust Observers are not named here.)
| Person | Organization |
|---|---|
| Gianfranco Tabasso | AITI-Associazione Italiana Tesorieri de Impresa |
| Ezer Farhi | ARX |
| Hu Guangbin | Beijing CE Open Source Software Co., Ltd. |
| John Sabo | CA* |
| Ned Allison | California Legislative Data Center |
| Marta Cruellas | CATCert-Agencia Catalana de Certificacio |
| Drummond Reed | Cordance* |
| Oyvind Gjorven | Directorate of Labour and Welfare Norway |
| Rob Philpott | EMC Corporation |
| Daya Puls | EMC Corporation |
| June Leung | FundServ Inc. |
| John Moehrke | GE Healthcare* |
| Hans Aanesen | Individual |
| Ken Adler | Individual |
| John Bradley | Individual |
| Chester Ensign | Individual |
| Stephen Wilson | Individual |
| John Sabo | International Security Trust & Privacy Alliance (ISTPA) |
| Stefan Bocken | IS4U |
| Robin Gorris | IS4U |
| Brynn Mow | Jericho Systems Corporation |
| Anil John | Johns Hopkins University Applied Physics Laboratory* |
| RJ Schlecht | MISMO* |
| Tom Scavo | National Center for Supercomputing Applications (NCSA) |
| Nat Sakimura | Nomura Research Institute, Ltd. (NRI)* |
| Abbie Barbir | Nortel |
| Harry Haury | NuParadigm Government Systems, Inc. |
| Scott McGrath | OASIS * |
| Upendra Mardikar | PayPal Inc. |
| Marc Aronson | Pennsylvania Assoc. of Notaries |
| Peter Brown | Pensive S.A. |
| Mike Willis | PricewaterhouseCoopers LLP:* |
| Anil Saldhana | Red Hat |
| David Ellis | Sandia National Laboratories |
| Pim van der Eijk | Sonnenglanz Consulting |
| Arshad Noor* | StrongAuth, Inc.* |
| Nick Pope | Thales eSecurity Ltd.* |
| Bob Sunday | Treasury Board of Canada, Secretariat |
| Phillip Hallam-Baker | VeriSign |
| Thomas Hardjono | Wave Systems |
| Steven Churchill | XDI.ORG* |
| Bill Washburn | XDI.ORG* |