Name: How x402 Brings Open Source Governance to Payments - Junhyeok Yoo, Four Pillars
Start: 2026-08-12T14:15:00+0900
End: 2026-08-12T14:45:00+0900

11-12, August 2026
Seoul, South Korea
View More Details & Registration
Note: The schedule is subject to change.

The Sched app allows you to build your schedule but is not a substitute for your event registration. You must be registered for Open Source Summit Korea 2026 to participate in the sessions. If you have not registered but would like to join us, please go to the event registration page to purchase a registration.

This schedule is automatically displayed in Korea Standard Time (KST), UTC +9. To see the schedule in your preferred timezone, please select from the drop-down menu to the right.

How x402 Brings Open Source Governance to Payments - Junhyeok Yoo, Four Pillars

Wednesday August 12, 2026 14:15 - 14:45 KST

Grand Ballroom 2-3

In April 2026, x402 joined the Linux Foundation with over 20 founding members. It is the first payment protocol under open source governance at the Linux Foundation.

x402 activates HTTP 402 "Payment Required," reserved in 1997 but never used. A server responds with 402 and payment terms, the client settles on-chain, the resource is delivered. Apache 2.0, zero protocol fees, chain-agnostic, no single-organization dependency.

Part 1: Why now. Every internet layer runs on open protocols except payments. That breaks when AI agents must pay at machine speed. We map the agentic payment stack and ask: is it open, who governs it?

Part 2: How x402 works. HTTP 402 challenge-response, stateless architecture, one middleware line to gate any API, production deployments today.

Part 3: Bottom-up to foundation. x402 was open-sourced, developers adopted it, major infrastructure providers shipped native support, competing protocols chose to integrate x402 rather than build a rival. Then it moved to the Linux Foundation.

Part 4: What comes next. The protocol is early. Foundation governance changes the signal. We examine what sustained adoption requires.

Speakers

Junhyeok Yoo

Researcher, Four Pillars

Junhyeok Yoo is a Researcher at Four Pillars in Seoul, deeply focused on the infrastructure of agentic commerce and machine economies. As a 4th-year CS undergraduate at SKKU(Sungkyunkwan University) and VP of Decipher (SNU’s blockchain academy), he explores the intersection of computer... Read More →

Wednesday August 12, 2026 14:15 - 14:45 KST
Grand Ballroom 2-3

Open AI + Data

Open Source Summit Korea 2026

Junhyeok Yoo

Sign up or log in to save this to your schedule, view media, leave feedback and see who's attending!

Get help with the event