No Python needed — verify directly in your browser•Real search • Real hash • Real chain
Every face
leaves a trace.
We make it verifiable.
Drop a portrait. We detect the face, search the open web for where it appears, compare candidates with cosine similarity, canonicalize the match and anchor its SHA-256 on an Ethereum-compatible chain. Then prove it — VERIFIED / TAMPERED.
FACE
0.80 conf
512-D ArcFace
MATCH
100.00%
Face Similarity
HASH
SHA-256
canonical JSON
CHAIN
Block #2
VERIFIED
Inputsamples/input.jpg
face 0.80bbox208,178 → 352,390
emb512-D · L2 1.000
● Live detection
↓
Web discovery — /api/search → Yandex reverse-image6 candidates
100.0%
✓ Match
68.2%
below
41.7%
below
↓
BLOCKCHAINVERIFIED
SHA-256 7a63a215…3676
tx 0xa4e8…809a7e · block #2 · 0x5FbD…aa3
✓ BLOCKCHAIN VERIFICATION SUCCESSFUL
Try it now — /verify
BUILT WITHInsightFace buffalo_l • OpenCV 4.10 • Web3.py 6 • Solidity 0.8.20 • Next 15.3.9 • eth-tester / GanacheNo mocks • No hard-coded posts • Only SHA-256 on-chain
How it works
Six focused steps. Click to explore — the code preview on the right follows your selection.
Face Detection
✓Face Detection
Browser FaceDetector + InsightFace fallback. ArcFace 512-D, L2-normalized.
Live on this siteNo install needed
◐
Input
Portrait
⬡
Proof
SHA-256
⛓
Chain
Anchored
RESULT
VERIFIED on-chain
Tamper → instantly shows TAMPERED
Live run — no code neededLena · VERIFIED
✓
Input
1 face found
bbox 208,178 → 352,390 · 0.80 conf · 512-D
✓
Search
6 candidates
Live web discovery — real external fetch
✓
Match
100.00% — Face Similarity Match
Best candidate selected by similarity
✓
Proof
Fingerprint anchored
SHA-256 → on-chain record · Block #2
VERIFICATION
✓ VERIFIED — on-chain fingerprint matches
Edit anything → instantly shows TAMPERED
Quick start — no setup needed
Use the browser verifier above — no install. For the full audited pipeline, the project also runs locally.
Why this PoC is real
- InsightFace — accurate face detection
- Live web search — real external fetch, not a local database
- Candidates are face-verified before ranking
- Only the fingerprint goes on-chain — no personal data
- Tamper instantly shows TAMPERED