# ZCAM

## Docs

- [Insurance Claim Verification](/usecases/insurance_claim_verification): Insurance companies allow policyholders to file claims using photos from their mobile app. This has led to an increase in fraud where claimants manipulate photos before submission. ZCAM ensures that claim photos were taken on the policyholder's device using the official app, and haven't been edited since capture.
- [Verifiable News Platform](/usecases/verifiable_news_platform): Edited and AI-generated photos are a growing concern for news consumers. A news platform can use ZCAM to let readers independently verify that photos are authentic and unedited.
- [Architecture](/technical-docs/architecture): The ZCAM SDK allows an integrating app to:
- [FAQs](/technical-docs/faq): *Does ZCAM work on Android?*
- [ZK Proof Details](/technical-docs/zkproof-details): The SP1 program proves the following:
- [Capture SDK](/sdk/capture): The Capture SDK (`@succinctlabs/react-native-zcam1`) takes photos and produces C2PA-signed assets bound to hardware-backed integrity signals.
- [Overview](/sdk): The ZCAM1 SDK provides React Native components and hooks for capturing, proving, and verifying authenticated photos using hardware-backed cryptography and zero-knowledge proofs.
- [Picker SDK](/sdk/picker): The Picker SDK (`@succinctlabs/react-native-zcam1`) provides an image picker component with built-in authenticity status badges.
- [Prove SDK](/sdk/prove): The Prove SDK (`@succinctlabs/react-native-zcam1/proving`) generates zero-knowledge proofs for C2PA-signed images and embeds them back into the photo.
- [Verify SDK](/sdk/verify): The Verify SDK (`@succinctlabs/react-native-zcam1`) validates the authenticity of C2PA-signed photos with embedded proofs.
- [VerifiableFile](/sdk/verify-react-native/VerifiableFile): Class for verifying C2PA manifests and ZK proofs in photos. Extracts the manifest on construction and provides methods to verify bindings, proofs, and retrieve metadata.
- [captureMetadata](/sdk/verify-react-native/captureMetadata): Returns the capture metadata from the C2PA manifest. Contains device info and camera settings recorded at capture time.
- [dataHash](/sdk/verify-react-native/dataHash): Returns the file's content hash as recorded in the active C2PA manifest. This hash is used as a public input to the zero-knowledge proof.
- [Verify Types](/sdk/verify-react-native/types): Type definitions used throughout the Verify SDK.
- [verifyBindings](/sdk/verify-react-native/verifyBindings): Verifies the manifest's bindings (e.g., App Attest attestation). Checks the cryptographic integrity of the hardware-backed assertion.
- [verifyProof](/sdk/verify-react-native/verifyProof): Verifies the cryptographic zero-knowledge proof embedded in the C2PA manifest. Checks the validity and integrity of the ZK proof.
- [VerifiableBuffer](/sdk/verify/VerifiableBuffer): Class for verifying C2PA manifests and ZK proofs in Node.js. Extracts the manifest on construction and provides methods to verify bindings, proofs, and retrieve metadata.
- [VerifiableFile](/sdk/verify/VerifiableFile): Class for verifying C2PA manifests and ZK proofs in the browser. Extracts the manifest on construction and provides methods to verify bindings, proofs, and retrieve metadata.
- [authenticityStatus](/sdk/verify/authenticityStatus): Determines the authenticity status of the file based on its C2PA manifest. Use this to decide which verification method to call.
- [c2paReader](/sdk/verify/c2paReader): Returns the underlying C2PA Reader for the file. Use this for direct access to the C2PA manifest store when you need lower-level control.
- [captureMetadata](/sdk/verify/captureMetadata): Returns the capture metadata from the C2PA manifest. Contains device info and camera settings recorded at capture time.
- [dataHash](/sdk/verify/dataHash): Computes the content hash of the file. This hash is used as a public input to the zero-knowledge proof.
- [Verify Web/Node.js SDK](/sdk/verify): The Verify SDK (`@succinctlabs/zcam1-verify`) validates the authenticity of C2PA-signed photos and videos in the browser and Node.js.
- [Verify Browser Types](/sdk/verify/types): Type definitions used throughout the Verify Browser SDK.
- [verifyBindings](/sdk/verify/verifyBindings): Verifies the manifest's bindings (e.g., App Attest attestation). Checks the cryptographic integrity of the hardware-backed assertion.
- [verifyProof](/sdk/verify/verifyProof): Verifies the cryptographic zero-knowledge proof embedded in the C2PA manifest. Checks the validity and integrity of the ZK proof.
- [ProverProvider](/sdk/prove/ProverProvider): React context provider that initializes the proving client for ZK proof generation.
- [embedProof](/sdk/prove/embedProof): Embed a generated proof into a photo's C2PA manifest.
- [getProofStatus](/sdk/prove/getProofStatus): Check the current status of a proof generation request. Used to poll for completion after calling [`requestProof()`](/sdk/prove/requestProof).
- [requestProof](/sdk/prove/requestProof): Request ZK proof generation for a photo. Returns a request ID for polling status.
- [Prove Types](/sdk/prove/types): Type definitions used throughout the Prove SDK.
- [useProofRequestStatus](/sdk/prove/useProofRequestStatus): Hook to poll the status of a specific proof request.
- [useProver](/sdk/prove/useProver): Hook to access the proving client from within `ProverProvider`.
- [waitAndEmbedProof](/sdk/prove/waitAndEmbedProof): Convenience method that requests a proof, waits for it to be ready, and embeds it automatically.
- [ZImagePicker](/sdk/picker/ZImagePicker): React component that displays a grid of images with authenticity status badges.
- [authenticityStatus](/sdk/picker/authenticityStatus): Check the authenticity status of a photo by analyzing its C2PA manifest.
- [privateDirectory](/sdk/picker/privateDirectory): Returns the path to the app's private document directory. This is the recommended location for storing captured photos and sensitive files.
- [ZCamera](/sdk/capture/ZCamera): React component that renders a native iOS camera preview with hardware-backed C2PA signing.
- [focusAtPoint](/sdk/capture/focusAtPoint): Focus the camera at a specific point in the preview. Also adjusts exposure point if supported by the device.
- [getMaxZoom](/sdk/capture/getMaxZoom): Get the maximum supported zoom factor for the current camera device.
- [getMinZoom](/sdk/capture/getMinZoom): Get the minimum supported zoom factor for the current camera device.
- [getSwitchOverZoomFactors](/sdk/capture/getSwitchOverZoomFactors): Get the zoom factors where the device switches between physical lenses.
- [hasUltraWideCamera](/sdk/capture/hasUltraWideCamera): Check if the current device has an ultra-wide camera lens.
- [initCapture](/sdk/capture/initCapture): Initializes the device by generating hardware-backed keys and App Attest attestation. Call once on app startup.
- [isDepthSupported](/sdk/capture/isDepthSupported): Check if the current camera device supports depth data capture.
- [previewFile](/sdk/capture/previewFile): Present a native full-screen preview for any file using iOS QLPreviewController.
- [setZoomAnimated](/sdk/capture/setZoomAnimated): Set zoom with smooth animation. Recommended for pinch-to-zoom gestures.
- [startVideoRecording](/sdk/capture/startVideoRecording): Start recording a video using the native camera. The recording continues until [`stopVideoRecording()`](/sdk/capture/stopVideoRecording) is called.
- [stopVideoRecording](/sdk/capture/stopVideoRecording): Stop the current video recording and return the finalized file path with comprehensive metadata.
- [takePhoto](/sdk/capture/takePhoto): Captures a photo with hardware-backed C2PA signing and returns a `ZPhoto`.
- [Capture Types](/sdk/capture/types): Type definitions used throughout the Capture SDK.
- [C2PA](/overview/c2pa): The **Coalition for Content Provenance and Authenticity (C2PA)** is an open technical standard for embedding provenance information directly into digital media files. It provides a standardized way to record where content came from, how it was created, and what modifications have been made.
- [How it Works](/overview/how_it_works): ZCAM verifies photo authenticity via a combination of hardware-backed attestation, cryptographic signatures, and optional zero-knowledge proofs.
- [Landscape](/overview/landscape): Several technologies exist for image authenticity and provenance. Most solve for different problems, such as edit history, AI detection, trust scoring, rather than proving a photo was authentically captured on a real device.
- [Installation](/getting-started/installation): The ZCAM SDK packages include Rust bindings built via UniFFI. You need Rust installed with the targets for your target platform(s):
- [Quickstart](/getting-started/quickstart): This guide demonstrates a complete flow: capturing a photo, generating a proof, and verifying it.
- [Authenticity](/features/authenticity): An authentic photo is one that was genuinely captured by a camera.
- [Privacy](/features/privacy): Historically, proving the authenticity of a photo requiires the photographer to step forward and vouch for it. This creates an inherent tension: **to prove a photo is real, someone must attach their reputation and likely their identity to it.**
- [Security](/features/security): A verifiably authentic photo from ZCAM provides the following guarantees: