Ko Takahashi

Building tools for World Peace through Culture & Tech. 🇯🇵 Exploring the "Matsuri" of life. Blending philosophy, spirituality, and software engineering. CEO @ Jon & Coo Inc. Location: Shinjuku, Tokyo

Joined on Jan 9, 2026

Ko Takahashi

May 6

Two 'we trust you' partnerships arrived as our design matured. Here's what changed in our technical decisions.

#blockchain #buildinpublic #startup #web3

3 min read

Ko Takahashi

May 4

We're shipping audit-first, federated overseas chapters for our community economy platform. Here's the architecture.

#discuss #webdev #architecture #web3

3 min read

Ko Takahashi

May 4

We shipped 3 features in one flow today: Shop + Crowdfunding + Live. Here's the integration design.

#showdev #webdev #architecture #discuss

3 min read

Ko Takahashi

May 4

I'm shipping a community-run economic platform next month. Here's what we cut, what we kept, and why.

#showdev #webdev #architecture #discuss

3 min read

Ko Takahashi

May 1

I Got Arrogant. I Lost Everything. And Yet Here I Am, Standing at the Gate — A Reflection from 7 Years of Code

6 min read

Ko Takahashi

Apr 30

I went to a startup pitch night on 30 hours of no sleep — what India's tech scene taught me about building

#career #india #startup #productivity

5 min read

Ko Takahashi

Apr 27

What 10,000 Web3 People From 50 Countries Taught Me About Japan's Real Role — TEAMZ Summit 2026

#discuss #webdev #web3 #japan

3 min read

Ko Takahashi

Apr 27

Why I Built Shop, Crowdfunding, and Live Into One Platform — A Festival Economy on Web3

#showdev #webdev #web3 #japan

3 min read

Ko Takahashi

Apr 10

The Kami in the Code: Japan's Technology, Past, Present, and the Spirituality That Will Shape Its Future

#discuss #news #software

8 min read

Ko Takahashi

Apr 7

What I Learned About DAO Governance From a 1,300-Year-Old Japanese Festival System (TEAMZ Summit 2026)

#web3 #blockchain #dao #ai

3 min read

Ko Takahashi

Mar 29

World in Chaos, Japan at a Crossroads: Why Wa (Harmony) Is the Governance Model the World Needs

#rust #ai #governance #japanese

3 min read

Ko Takahashi

Mar 28

What an 87-Year-Old Festival Elder Taught Me About AI Agent Governance — Implemented in Rust

#rust #ai #webdev #governance

4 min read

Ko Takahashi

Mar 27

I Studied 1,300 Years of Festival Governance — Here's What It Teaches About DAO Design

#web3 #rust #governance #beginners

2 min read

Ko Takahashi

Mar 26

I Built 'Sanpai Mining' — An AI System Where Visiting Forgotten Shrines Earns More Than Famous Ones

#ai #blockchain #rust #webdev

3 min read

Ko Takahashi

Feb 2

Surviving 3 Years of Solo Dev: How I built a "Culture OS" and migrated to Web3.

#web3 #solana #nextjs

4 min read

Ko Takahashi

Jan 9

Hacking the Chaos: Why I’m Building a "Matsuri" Platform in Tokyo

#webdev #nextjs #japan #startup

2 min read

DEV Community

Ko Takahashi

Badges

Writing Debut

Two 'we trust you' partnerships arrived as our design matured. Here's what changed in our technical decisions.

We're shipping audit-first, federated overseas chapters for our community economy platform. Here's the architecture.

We shipped 3 features in one flow today: Shop + Crowdfunding + Live. Here's the integration design.

I'm shipping a community-run economic platform next month. Here's what we cut, what we kept, and why.

I Got Arrogant. I Lost Everything. And Yet Here I Am, Standing at the Gate — A Reflection from 7 Years of Code

I went to a startup pitch night on 30 hours of no sleep — what India's tech scene taught me about building

What 10,000 Web3 People From 50 Countries Taught Me About Japan's Real Role — TEAMZ Summit 2026

Why I Built Shop, Crowdfunding, and Live Into One Platform — A Festival Economy on Web3

The Kami in the Code: Japan's Technology, Past, Present, and the Spirituality That Will Shape Its Future

What I Learned About DAO Governance From a 1,300-Year-Old Japanese Festival System (TEAMZ Summit 2026)

World in Chaos, Japan at a Crossroads: Why Wa (Harmony) Is the Governance Model the World Needs

What an 87-Year-Old Festival Elder Taught Me About AI Agent Governance — Implemented in Rust

I Studied 1,300 Years of Festival Governance — Here's What It Teaches About DAO Design

I Built 'Sanpai Mining' — An AI System Where Visiting Forgotten Shrines Earns More Than Famous Ones

Surviving 3 Years of Solo Dev: How I built a "Culture OS" and migrated to Web3.

Hacking the Chaos: Why I’m Building a "Matsuri" Platform in Tokyo