18 · Brazil · Building open-source tools for content authenticity
I build software that proves things are real.
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Building TrueShot, cryptographic photo verification for any Android device
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Writing a paper on sensor-based screen recapture detection for IEEE WIFS 2026
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Starting Computer Engineering in Granada, Spain (Fall 2026)
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CTO at Amrntech, GovTech company building software for municipalities and state governments across Brazil
An open-source Android camera that embeds cryptographic proof of authenticity in every photo. C2PA-inspired content provenance for the 3 billion devices that flagship-only solutions ignore.
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Cryptography
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Novel research contributions
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Screen recapture detection results (Redmi Note 11S)
| Scenario | Score | Flagged? |
|---|---|---|
| Normal photo (daylight) | 20 | No |
| Normal photo (dark room) | 30 | No |
| Screen capture (daylight) | 70 | Yes |
| Screen capture (dark room) | 85 | Yes |
Minimum 40-point separation. Threshold: 60. Purely sensor-based, no ML, no image analysis.
