"Don’t put all your eggs in one basket" is a fundamental adage in the investment world. But when oracle services extend to over 40 different blockchains, the question becomes more complex— is this truly risk diversification, or is it like filling a basket with eggs made of different materials and uncertain quality, thereby exposing the entire oracle network to greater uncertainty?

It seems that the risks are indeed stacking up. Supporting each additional chain requires deploying new smart contracts, interacting with more nodes, and adapting to each chain’s consensus rules and potential vulnerabilities. Any chain experiencing a rollback, consensus failure, or attack could impact the oracle’s service on that chain, and consequently affect applications relying on cross-chain data. The linear logic of risk accumulation appears undeniable.

But there is a key aspect that has been overlooked—**the asymmetry and isolation of security**.

APRO’s security model does not simply spread its assets evenly across all chains. Its true defense lies in a unique dual-layer network design. The top layer involves actual execution on each public chain, while a crucial role is played by an arbitration network below. This arbitration layer acts as an ultimate trust anchor, which can be built on the highest security public chains (like Ethereum) or reinforced through consensus layer solutions such as Babylon.

What does this architecture imply? The risk of a single chain no longer directly propagates throughout the entire system. Isolation contains threats locally, and the layered design ensures security is backed by a more robust foundational layer. The real danger does not lie in the number of chains, but in whether risks can be effectively isolated and defenses properly established.