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ARCBlock ジャーナル

探る価値のあるアイデア

ArcBlock の思想、製品、実践ガイド、ストーリーを集めた、成長し続けるライブラリです。

思想と視点

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Opinion

CLARITY Act or Not, Let’s Clarify ABT

Clear law matters, but a product must also explain what its token does, who controls it, what rules apply, and how participants reconcile the record.

Opinion

Functional Networks, Not Perpetual Promises

The SEC staff's new crypto FAQ draws a useful distinction between improving a working system and promising to build one. What matters is distinguishing delivered capabilities from work that remains promised.

製品とアップデート

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News

ARC Now Supports the MCP 2026-07-28 Specification

ARC already spoke MCP. This upgrade aligns that surface with MCP 2026-07-28: stateless streamable HTTP and standard OAuth discovery so third-party agents can reach Blocklets without a special bridge.

ビルドとチュートリアル

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Engineering

Web Device: Declare a Website, Then Pick the Right Path

Web Device is one of ARC's core capabilities: declare a .web/ folder anywhere in AFS, and the data and AUP under it get rendered server-side into a website, SEO checks, broken-link detection, and visitor analytics included for free. This piece covers how it differs from UI Device (/dev/ui/web), how to use it, and which situations call for which.

Engineering

Small World: Every Agent Lives in Its Own Projection

AFS has a design principle we call Small World: every agent, every app, every process sees not the global world, but a small world projected specifically for it. Anything outside that world isn't "access denied". It simply doesn't exist. Here's where the idea comes from, why it's more than a security mechanism, and how to try it yourself.

ストーリー

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Report

コミュニティ・バウンティ・プログラムの更新

皆さん、こんにちは。ここ数ヶ月間、私たちのコミュニティ・バウンティ・プログラムは、エコシステム全体で有意義な改善を推進する助けとなってきました。バグ・バウンティを通じて...

Opinion

フラッシュトーク:あなたのデータが戦場となる新たなブラウザ戦争

AIがブラウザ戦争を再燃させた。しかし、もはや争点はタブやベンチマークの性能ではない――その中心にあるのは「あなたのデータ」だ。ほとんどの「AIブラウザ」は、あらゆる情報をリモートシステムに吸い上げるクラウドファーストモデルを採用している。このモデルは、私たちの生活が実際に営まれるモバイル環境では機

Report

ArcBlock 週間製品ハイライト

先週、ArcBlockチームは、複数の製品にわたってユーザビリティ、パフォーマンス、AI対応を向上させるためのアップデートを次々とリリースしました。

最新

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Opinion

Functional Networks, Not Perpetual Promises

The SEC staff's new crypto FAQ draws a useful distinction between improving a working system and promising to build one. What matters is distinguishing delivered capabilities from work that remains promised.

Tutorial

Build a travel collection in Aside

Start with a route guide and a record of your own. Save content, add a note, and bring the pieces together in a travel collection in Aside.

Release

DiscussKit, Rebuilt on ARC

DiscussKit has been rebuilt on ARC, and ArcBlock Community has completed its move. This is a new division of responsibility across discussions, identity and user-owned data.

Opinion

Why We Built Aside

We watched great tools change hands or disappear. That is why ArcBlock built Aside: an ARC-powered iPhone app that sends every Share back to a place you own.

Explainer

Bookmarking is a runtime capability, not a site plugin

Bookmarking and notes should not be rebuilt on every site. Arc ships them as a default-on runtime capability: hidden until you log in, easy to turn off, or bound to buttons the page already has.

Opinion

CLARITY Act or Not, Let’s Clarify ABT

Clear law matters, but a product must also explain what its token does, who controls it, what rules apply, and how participants reconcile the record.

Opinion

Accepting Payments Is Not Issuing a Stablecoin

Issuing a stablecoin, accepting payment, and operating a digital service are different systems. Most applications need billing and credits, not a currency of their own.

News

What's next: ARC, one real application at a time

The new site is live. Here is how we plan to bring ARC into the community, data spaces and everyday applications, with migrations, new products and builders taking part along the way.

Opinion

OpenAI's Agents API is a harness. ARC is a new kind of computer for agents

OpenAI's Agents API turns the Codex loop into a hosted API: sessions, compaction, tools, sandboxes, plugins. That layer is real. It is still not a computer with identity, durable state, and an owner who can walk away with it. ARC attaches at the seam they already documented.

News

ArcBlock 新サイト公開。ARC が表舞台へ。

ArcBlock の新サイトは ARC 上で稼働し、実装コードはすべて AI コーディングエージェントが作成。Web 体験を支える AFS と AUP、人とエージェントの新しい作り方を紹介します。旧サイトは約30日間公開を継続します。

Explainer

A globe you can put on the page

A rotating globe on a page is not decoration bolted under the text. It is a layout component: figure, scene, or backdrop. The homepage already uses it. This article puts several in the reading column.

Explainer

Light on the page, not a picture of trees

Type on a white field is a document. Light moving over the type is a room. leaf-shadow is that overlay; gobo-loop is how you mint a new clip from a sentence.