Track 1 · Foundations1 of 5
How XChain works
Tokens, trading, and contracts running on top of Bitcoin. No changes to Bitcoin required.
XChain is a metalayer: a protocol that runs above a blockchain, using it as a foundation without modifying it. That one idea is what makes everything else possible.
The metalayer idea
Think of a building. The concrete and steel (the blockchain) provide the structure; the electrical wiring (XChain) runs through it to add new capabilities, without changing the structure itself.
In practice, XChain tucks small packets of data inside ordinary blockchain transactions, marked with a magic prefix (XCHN). To Bitcoin they're just part of a normal transaction. XChain's software reads those packets as commands and keeps its own running record of balances, orders, and contract state.
The pieces that make it work
Under the hood, a handful of small, independent services turn a coin node into a queryable token platform. Each does one job, with data flowing from the chain up to your app. The same shape runs once per chain you support.
Secured by the chain you already trust
An XChain token isn't a copy or an IOU. The record literally lives inside a real blockchain transaction, secured by the very same proof-of-work that secures every other transaction on that chain. There are no separate validators and no new consensus to trust.
No sidechains, no bridges
Many token systems "lock" an asset on one chain and "mirror" it on another through a bridge, and bridges are among the most-attacked targets in all of crypto. XChain has nothing to bridge: there's no separate chain, nothing to lock and unlock.
More than one chain, one protocol
XChain runs on Bitcoin, Litecoin, and Dogecoin today with the same 36 commands and the same tools. Because the technique only needs a Bitcoin-style chain, adding another compatible chain is a configuration change. No new network to build.
Anyone can verify it
The data is obfuscated, not encrypted; its key comes from public transaction data, so anyone running a node can read everything. That fully-public, replayable state is exactly what lets independent parties recompute and check the whole ledger for themselves.