Coordination
xchain-hub
The decentralized validator network: oracle, attestation, and governance.
Where it fits
Validator network
Hub
Every service
Staked validators reach PBFT consensus on config, prices, attestation, and SWAPs. No custody.
What it is
The hub is the platform's coordination layer: a config oracle, a decentralized price oracle, a cross-chain attestation engine, a SWAP coordinator, and an off-chain governance system, run by a network of staked validators reaching PBFT consensus. It never takes custody of funds.
How it fits into the platform
It is shared across all chains. Every service syncs config and prices from it, and it is what makes cross-chain swaps and fiat-priced fees possible, without being a point of custody or a single point of failure.
What it can do
- Config writes via PBFT consensus (2f+1 quorum)
- Price oracle: trimmed-median aggregation finalized by PBFT
- Cross-chain attestation with per-chain-pair quorums
- SWAP lifecycle coordination across chains
- Off-chain governance (7-day vote, 2/3 approval)
- Validator rewards and slash detection
Under the hood
- MariaDB-backed; Ed25519 validator identities
- WebSocket P2P gossip between validators
- Standalone or full validator mode; multi-instance HA