XChain is an open-source public good that turns verifiability into shared infrastructure — so almost anything the world records can be proven, not just trusted. Apache-2.0, and running live on a public testnet right now. See it for yourself: www.xscan.org — real blocks, real validators, real transactions, updating as you read this. One promise runs through every page: We tell the truth about what is solid and what is still hard. In a space full of overclaims, that honesty is the whole point — and it is stated, out loud, on the Real Status page. (Throughout these docs, "We" is capitalized on purpose: it means all of us — builders, users, and anyone who believes in open infrastructure that belongs to everyone.)

Overview

Every second, humanity creates an ocean of records — a like, a view, a sensor reading, a message, a payment. Almost none of it can be verified by anyone except the company that happens to store it. XChain exists to change that: to make verifiability — the ability for anyone to check that something really happened — a shared foundation the whole world can build on.

XChain is a two-base meta-blockchain. Not "a faster chain," but a foundation layer that thousands of applications and chains can stand on top of. It is built on one deceptively simple principle: verify, don't re-execute.

	Base A — Secured Execution	Base B — Verifiable Data Fabric
What it is	Consensus chains (Cosmos SDK + CometBFT + IBC)	Namespaced, append-only logs on a Data Availability layer — no per-log consensus
What it holds	Value, assets, identity, atomicity (T0–T2)	The high-volume, low-value ocean: likes, views, chat, IoT, logs (T3–T4)
On the testnet	3 chains: `a0-root` · `a1-value` · `a2-interactive`	9 namespaces on one DA node (Celestia)

Between the two bases sits a narrow waist of seven core primitives — a small, hard-specified core that lets many teams build in parallel and still fit together, and lets the community build on top without asking anyone's permission.

Diagram

Whoever you are, there's a door in. A developer can clone the repo and have a node producing blocks in about a minute. A user gets applications where the record of what happened is provable, not just trusted. And if you simply believe in open infrastructure — the kind that belongs to everyone — this is a movement you can follow, verify, and help build.

In one line: XChain is ambitious enough to be worth building, and honest enough to be worth trusting. The honesty isn't a disclaimer — it's the invitation. Real builders come for hard, unsolved problems, not for promises that everything is already done.