BlockFact
Media You Can Trust
What is BlockFact?
BlockFact is a cryptographic authenticity protocol for media. It transforms photos and videos into tamper-proof digital records with embedded metadata, secure encryption, and blockchain verification—protecting truth in an age of manipulation and misinformation.
Whether you're capturing proof, minting NFTs, or verifying claims, BlockFact gives your content undeniable provenance.
How It Works
Six comprehensive steps to secure your media
Capture the Media
Users take a photo or video using the BlockFact mobile or web app. The capture includes device metadata, timestamp, and GPS location.
Add Non-Visual Watermark
A secure, invisible watermark is embedded into the image or video. This ensures traceability even if metadata is removed or the file is re-encoded.
AI Analysis & Vector Registration
The media is converted into a vector embedding and registered in the BlockFact AI-powered vector database for fast similarity search and tamper detection.
On-Chain Metadata Registration
All cryptographic metadata—including hash, timestamp, device info, optional zero-knowledge proof, and location commitments—is stored on StarkNet.
Generate the .facti File
The media is wrapped into a .facti container with encrypted metadata, on-chain transaction reference, watermarked content, and optional compression flags.
Universal Verification
Anyone can verify a .facti file using our web tool or Chrome extension, view the StarkNet proof, and perform AI similarity matching to confirm authenticity.
AI Analysis & Vector Registration
Our AI-powered vector database enables advanced media verification capabilities:
Fast Visual Similarity Search
Instantly find similar or duplicate content across the entire BlockFact network
Detection of Reuploads or Tampering
Identify when content has been modified, cropped, or reused without permission
Privacy-Preserving Matching
Match media content without exposing raw files or sensitive information
The .facti Container
This IANA-approved media type creates a verifiable asset that includes:
Why BlockFact is Different
Built for the future of digital trust
Blockchain-backed trust
Powered by StarkNet for immutable verification
Encrypted metadata
Privacy and control over your sensitive information
ZK-proof optionality
Verify without revealing sensitive details
Open access format
Image remains viewable; metadata unlockable
Cross-platform ready
Mobile and web2/web3 interoperability
Use Cases
Protecting truth across industries
Insurance & Claims Fraud
Clients capture incident images with tamper-proof verification. No more staged accidents or recycled photos.
- Location & timestamp verification
- On-chain hash registration
- Tamper detection
Health Imaging & Diagnostics
Medical images with verifiable chain of custody for diagnostics and second opinions.
- Medical image integrity
- Chain of custody
- Patient verification
Legal Evidence Submission
Strengthen admissibility of media in court with blockchain-verified authenticity.
- Timestamp verification
- Chain-of-custody proof
- Court admissibility
Crypto Art & NFTs
Prevent art theft and fake NFTs with proof of creation and authenticity.
- Art theft prevention
- Original NFT verification
- Creation proof
Citizen Journalism
Real-time documentation with privacy-preserving verification for witnesses.
- Real-time documentation
- Privacy protection
- Truth verification
Intellectual Property
Register content before publication to prove authorship and prevent plagiarism.
- Authorship proof
- Pre-publication registration
- IP theft prevention
.facti — A New Standard
For Trustworthy Media
Even without unlocking metadata, .facti lets anyone see the original image. Full verification requires authorized access or public proof on StarkNet.
Encrypted metadata
Secure storage of sensitive information
Tamper-proof hashing
SHA256 verification for content integrity
On-chain registration
Blockchain verification via StarkNet
ZK-proof compatibility
Privacy-preserving verification options
Interoperable container
Standard format for universal compatibility
Trust & Compliance
BlockFact is built from the ground up to meet the highest standards of security, transparency, and global interoperability.
Official Media Formats — IANA Registered
The .facti, .facta, and .factv file types are officially registered with the Internet Assigned Numbers Authority (IANA) as recognized MIME media formats.
.facti
Verifiable Image Files
.facta
Verifiable Audio Files
.factv
Verifiable Video Files
This ensures:
- Cross-platform compatibility with systems that recognize global MIME types
- Secure indexing and processing across web, OS, and enterprise environments
- Standards-compliant architecture, enabling future integrations at the protocol level
End-to-End Encryption & Privacy
All embedded metadata (e.g. location, time, device ID) is encrypted using industry-grade algorithms. You control who can access it, or whether it's revealed at all.
Zero-Knowledge Proof Compatible
We support optional zero-knowledge proofs to validate claims (e.g., "was in this city") without exposing private data—a major leap forward in verifiable privacy.
Immutable Audit Trails
Every interaction—media registration, proof submission, or reputation change—is logged immutably on StarkNet for full auditability.
FACT Token
Powering the BlockFact Ecosystem
Our native token, FACT, powers on-chain verification, rewards, and in-app transactions throughout the BlockFact ecosystem.
Pay for Services
Use FACT tokens for registration and premium verification tools
Earn Rewards
Get rewarded with FACT tokens for verified contributions to the network
Enable Ecosystems
Power tipping and access control in content verification ecosystems
Join the FACT Economy
Participate in a decentralized network where truth is rewarded and verification creates value for everyone.