Builder & Researcher
GEO
NICOLAIDIS
I build tools for Bitcoin forensics and responsible AI. Currently running TrailBit Labs, shipping TrailBit.io, and writing Bitcoin Heuristics Field Notes.
Limassol, Cyprus
What I'm Building
Selected Projects
Bitcoin Research
TrailBit Labs
Independent Bitcoin forensics research lab. Validating the heuristics analysts rely on — CIOH, change detection, timing analysis — through empirical testing.
Bitcoin Analytics
TrailBit.io
Transaction graph visualization and UTXO tracing platform for blockchain analysis. Currently in closed beta.
Health AI
PLA Health
Longevity-focused iOS app with evidence-graded AI recommendations. Every suggestion carries a confidence level from L1 (meta-analyses) to L6 (preclinical).
Written & Spoken
Bitcoin Heuristics Field Notes
A newsletter and podcast on blockchain forensics methodology — the heuristics analysts use to trace transactions, where they fail, and what that means for compliance, privacy, and investigation.
Read the issues
Deep dives on common-input-ownership, change detection, taint analysis, peel chains, and more. New issues drop biweekly.
Or listen instead
Same material as the newsletter, in audio. On Spotify and Apple Podcasts.
Get in touch
LET'S TALK
If you're working on Bitcoin forensics, AI interpretability, or responsible AI and want to compare notes — reach out.