The lab / inspect the mechanism
Understand it.
Then challenge it.
Small working experiments in AI workflows and blockchain. Change the inputs, inspect the result and learn where the guarantees end.
Featured / AI systems
Inside a decision.
Find the evidence. Check the permission. Verify the receipt. A transparent local implementation of the controls around an AI workflow.
Open the decision lab ↗One system. Connected decisions.
A visual study of signals and their boundaries.
Blockchain / eight interactive lessons
From fingerprints to shared control.
Start at the beginning or choose a mechanism. Each lesson identifies what is real cryptography, what is simulated, and where to read the original specification.
01 / INTERACTIVE
What is a hash?
Change a message, inspect its fingerprint.
02 / INTERACTIVE
Blocks & chains
Edit history and re-mine a toy chain.
03 / INTERACTIVE
Consensus & proof of work
Explore a chain race and its assumptions.
04 / INTERACTIVE
Wallets, keys & signatures
Sign a message with real browser cryptography.
05 / INTERACTIVE
Mnemonics & seed phrases
Inspect BIP39 words, checksums and seeds.
06 / INTERACTIVE
Hot & cold wallets
Simulate a signing ceremony and its boundaries.
07 / INTERACTIVE
Multisig vaults
Explore thresholds and signer loss.
08 / INTERACTIVE
MPC & secret sharing
Separate secret recovery from threshold signing.
Utilities / local browser tools
Useful, without the ceremony.
QR code maker ↗
Create and download a QR code.
Ethereum address check ↗
Inspect format and EIP-55 checksum.
Units & number bases ↗
Ethereum denominations, bases and length.
Text case ↗
Uppercase and lowercase in one workspace.
Also in the archive: a tiny tic-tac-toe game. Its opponent uses simple rules, not machine learning.
From experiment to project.
The lab teaches mechanisms. The work pages document the systems and teams behind my experience.
Explore the project evidence →