Expansion chains are blockchains that rely on a primary chain for security. They can be implemented using EigenLayer, Avalanche subnets and Polygon 2.0. Compared to a new blockchain, an expansion chain is easier to bootstrap, as it can rely on the security of the primary chain. Nodes can be required to stake on the primary chain, using its tokens as collateral to ensure their good behavior. Due to the established security of the primary chain, the value of its tokens is more stable, and the nodes are more likely to remain correct.
In creating the architecture for a fully decentralized oracle network, eOracle aims to build a system inherently aware of its operational dynamics, ensuring comprehensive tracking of participant actions and outcomes within a transparent and immutable framework. Ideally, the best oracle infrastructure would be Ethereum itself, but the high costs and latency of on-chain processes make this infeasible. To address this, we established the "EO-Chain," a dedicated Proof-of-Stake (PoS) blockchain operated by Eigen operators—Ethereum validators restaking their ETH to secure the network.
The EO-chain offloads computation from the main blockchain, reducing costs and latency while maintaining decentralized incentives for oracle operators. This setup allows all calculations to occur on-chain, ensuring transparency and security.