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Ethereum Foundation Profile picture
@ethereumfndn
Jan 16 • 5 tweets • 2 min read • Read on X
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0/ The x402 Hackathon, supported by the Developer Acceleration Team, just concluded.

Here are a handful of winning projects building infrastructure & tools on the x402 protocol and moving the AI ecosystem forward on Ethereum.
1/ x402-sf by @Superfluid_HQ

It brings continuous subscription payments to the internet natively with an end-to-end subscription infrastructure.

farcaster.xyz/elvijs/0xd599a…

github.com/superfluid-org…
2/ Cheddr Payment Channels x402 by @yellowhatcoder

Making 100 requests a minute shouldn’t mean sending 100 transactions.

This uses payment channels for x402 to enable efficient recurring and streaming micropayments.

x.com/yellowhatcoder…

github.com/CPC-Developmen…
3/ @x402rorg by BackTrackCo

If you pay for data with x402 but it doesn’t deliver, this tool lets you request a refund.

Easy trust for agents & APIs.

x.com/x402rorg/statu…

github.com/BackTrackCo
4/ Thank you to all of the teams who participated.

You can learn more about the hackathon and x402 here.
x402hackathon.com

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More from @ethereumfndn

Ethereum Foundation Profile picture
May 14, 2025
0. Announcing the Trillion Dollar Security (1TS) initiative: an ecosystem-wide effort to upgrade Ethereum’s security to help bring the world onchain.
1. Ethereum is the most secure and most trusted blockchain ecosystem.

But Ethereum’s ambitions require more. Ethereum must surpass the safety and trustworthiness of the world’s legacy systems.
2. Ethereum must achieve “Trillion Dollar Security” - a world where:

- Billions of individuals feel safe holding $1000 onchain, collectively amounting to trillions of dollars

- Individual orgs are comfortable storing $1 trillion inside a single contract or application.
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Ethereum Foundation Profile picture
Apr 28, 2025
1/ Today, we’re excited to share three updates from the EF board and management team.
2/ First, from @AyaMiyagotchi and @VitalikButerin: a restatement and update on the EF’s vision, principles and values for this new era.

blog.ethereum.org/2025/04/28/ef-…
3/ The EF exists to strengthen Ethereum’s ecosystem and uphold its core values. Our role is both to drive forward critical progress ourselves, and to help build up others who help lead the ecosystem.
Read 11 tweets
Ethereum Foundation Profile picture
Feb 19, 2025
Announcing the Open Intents Framework ✨

Ecosystem-wide interop, accelerated by 30+ teams from all corners of Ethereum.

A modular, open framework to make it seamless for any chain to get intents into the hands of users & improve cross-chain UX.

➡️ openintents.xyzImage
It should be fast and easy to send assets across all chains of Ethereum.

Intents enable just that: frictionless cross-chain asset transfers.

But they take time to build & deploy, and one flavor of intents may not be compatible with another.
Interop requires shared innovation.

What if there was a way to collaborate on intent infrastructure, making it easier for all participants to adopt and scale?
Read 5 tweets

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