The Root Of Trust

The cryptography that keeps payments trustworthy.

Plain-English explainers on payment security, key management, and the trust layer of agentic commerce — for the people who build, secure, and lead in payments.

Read the whitepaper Watch on YouTube

Featured writing

Whitepaper

Deterministic Rails for Probabilistic Agents

Where a card transaction demands certainty — and how Visa's Trusted Agent Protocol, Mastercard's Agentic Tokens, and Google's AP2 mandates lock each checkpoint against a probabilistic agent.

Read the paper →

The Trust Layer

Where cryptography meets agentic commerce.

A monthly read on the trust and security layer of modern payments — the protocols, the cryptography, and what changes as AI agents start to pay.

No spam. Unsubscribe anytime.

About

Why "The Root Of Trust"

In cryptography, a root of trust is the anchor everything else chains back to — the one thing you have to trust for the rest to hold. Payments run on exactly that idea: keys, signatures, and scoped credentials that let strangers transact safely.

This is where I break that machinery down in plain English — EMV and HSMs, key management and tokenization, PCI and PIN security, and now the cryptographic trust layer that will decide whether AI agents can be trusted to pay.

Read my story