Data on Chain — Part 3 of 3 · ChainLab The first two parts were about plumbing — how to…
Data on Chain — Part 2 of 3 · ChainLab In Part 1 we settled on a reframing: a blockchain…
Data on Chain — Part 1 of 3 · ChainLab Here is a tempting idea. Public data like real estate…
Korea's tech is world-class, so why isn't AI payment running smoothly here yet? The answer isn't "skill" — it's the…
You've probably used "safe payment" on a secondhand marketplace. AI payments need this too. The catch: it's far harder than…
If last part's x402 was a vending machine, these two approaches are closer to a "spending allowance" and a "bar…
Put a coin in a vending machine, out comes a drink. x402 recreates that exact simple exchange on the web.…
AI is starting to buy things and pay for them by itself, with no human in the loop. It sounds…
Signature Replay & Operational/Key-Management Failures The final installment. The vulnerabilities in Parts 1–3 mostly had on-chain root causes. Part 4…
Consensus-Level Attacks & Access Control Failures So far we've covered the contract layer (Part 1) and the economic layer (Part…