XChain runs a live, public testnet — the Testnet MVC, a deliberately minimal network that proves the mechanism (not the scale). It is open and permissionless to read, explore, and — once the repository is published — to join.

The chains

The value Domain is three consensus chains; the data Domain is nine namespaces on one Celestia DA node (Tiers T3/T4).

Chain	Chain-id	Layer · Tier	Role
`a0-root`	`xchain_1000000000-1`	Settlement · T0	Root of trust, settlement, proof aggregation
`a1-value`	`xchain_1000000001-1`	Execution · T1	Value transfer, double-spend protection
`a2-interactive`	`xchain_1000000002-1`	Execution · T2	Applications, anchors Data-Layer commitments

Block time 3 seconds. Stack: Cosmos SDK v0.53 · CometBFT v0.38.19 · IBC v10.

Coin & addresses

Base unit metaX (18 decimals), display XCoin, symbol X; addresses xc1…; coin-type 118 (Keplr/Ledger compatible). Testnet coins have no value — see Token Economics.

Explore & connect

Explorer: www.xscan.org — real height, validators, transactions.
Public endpoints (CORS open; use www.xscan.org, not *.testnet.xchain.org):
- RPC — https://www.xscan.org/rpc/a{0,1,2}
- REST / LCD — https://www.xscan.org/lcd/a{0,1,2}
Wallet: add the chain to a Cosmos wallet (e.g. Keplr) with the chain-id above and an RPC/REST endpoint; coin-type 118, address prefix xc.

Run or join

Build and run a node from Run a Node. To match the running network, build from the tag **v0.2.1-testnet** (coin-type 118) — a master build is EVM/coin-type-60 and differs.

📊 The live state of this testnet — current height, validators, power distribution and fault tolerance — is on Status & Live Network, read straight from the chain. Nothing operational is hardcoded here.