Open Testimony
Everyone
info
10+
Downloads
About this app
Open Testimony helps human-rights organizations, journalists, legal observers, and civil-liberties groups capture and preserve verifiable photo and video evidence. Each recording receives a cryptographic signature and a tamper-evident evidence manifest from the moment of capture.
KEY FEATURES
• Device-bound signatures — On supported phones, ECDSA P-256 signing keys stay in Android StrongBox or the hardware-backed keystore. Devices without suitable secure hardware use a software HMAC fallback, which the evidence manifest identifies.
• Location and time evidence — GPS coordinates, optional nearby-network observations, device time, and network-verified timestamps provide capture context and help expose clock or metadata tampering.
• Hosted or self-hosted — Most organizations use Open Testimony's multi-tenant service in Finland, with organization-level access controls. Organizations can also operate the same open-source platform on their own infrastructure.
• Encryption in transit and at rest — Uploads use HTTPS/TLS. Evidence on the hosted service is encrypted at rest with AES-256-GCM.
• Multi-language support — Available in English, Spanish, French, Somali, Arabic, Ukrainian, Simplified Chinese, and Traditional Chinese.
• Search and review tools — Authorized organization staff can search transcripts and visual indexes generated on Open Testimony-operated or self-hosted servers.
• Tamper-evident audit trail — Significant platform actions are recorded in a hash-chained audit log with post-quantum signatures.
• Organization-based delivery — Select an organization during setup; uploaded evidence is routed to that organization's isolated workspace.
• Controlled media access — Record new evidence, import selected items through Android's system photo picker, and optionally save a local copy.
PRIVACY
Open Testimony has no ads and does not sell data or use it for cross-app tracking. The app processes the evidence you choose to upload, capture location and integrity metadata, a pseudonymous device identifier, and diagnostic/performance data needed to operate and secure the service. Recordings are not sent to Firebase, advertising networks, or third-party AI services. See the Privacy Policy for collection, sharing, retention, and deletion details.
KEY FEATURES
• Device-bound signatures — On supported phones, ECDSA P-256 signing keys stay in Android StrongBox or the hardware-backed keystore. Devices without suitable secure hardware use a software HMAC fallback, which the evidence manifest identifies.
• Location and time evidence — GPS coordinates, optional nearby-network observations, device time, and network-verified timestamps provide capture context and help expose clock or metadata tampering.
• Hosted or self-hosted — Most organizations use Open Testimony's multi-tenant service in Finland, with organization-level access controls. Organizations can also operate the same open-source platform on their own infrastructure.
• Encryption in transit and at rest — Uploads use HTTPS/TLS. Evidence on the hosted service is encrypted at rest with AES-256-GCM.
• Multi-language support — Available in English, Spanish, French, Somali, Arabic, Ukrainian, Simplified Chinese, and Traditional Chinese.
• Search and review tools — Authorized organization staff can search transcripts and visual indexes generated on Open Testimony-operated or self-hosted servers.
• Tamper-evident audit trail — Significant platform actions are recorded in a hash-chained audit log with post-quantum signatures.
• Organization-based delivery — Select an organization during setup; uploaded evidence is routed to that organization's isolated workspace.
• Controlled media access — Record new evidence, import selected items through Android's system photo picker, and optionally save a local copy.
PRIVACY
Open Testimony has no ads and does not sell data or use it for cross-app tracking. The app processes the evidence you choose to upload, capture location and integrity metadata, a pseudonymous device identifier, and diagnostic/performance data needed to operate and secure the service. Recordings are not sent to Firebase, advertising networks, or third-party AI services. See the Privacy Policy for collection, sharing, retention, and deletion details.
Secure evidence recording with cryptographic integrity for human rights.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- No data shared with third partiesLearn more about how developers declare sharing
- This app may collect these data typesLocation, Photos and videos and 4 others
- Data is encrypted in transit
- Data can’t be deleted
What’s new
Reliability, security, and evidence-integrity improvements. (build 191)
App support
About the developer
Jason Titus
info@open-testimony.com
United States