SMART CONTRACTS, DEFI & WEB3 SECURITY - Chapter 8, Exercise 3 Solution ========================================================== Why Ronin's Users Could Be Made Whole, and a Fully Decentralized Protocol's Users Might Not Be PROBLEM ------- Using this chapter's own comparison table, explain why Ronin's users could be made whole by Sky Mavis's own reimbursement, while a comparable loss on a fully decentralized protocol with no single company behind it typically couldn't be resolved the same way. SOLUTION -------- The deciding factor is whether there's a specific, identifiable, real party positioned to voluntarily absorb the loss on everyone else's behalf. Ronin is a real blockchain built and operated specifically for Axie Infinity by Sky Mavis, a real, identifiable company with its own real treasury, revenue, and legal existence. When the $620 million theft happened, Sky Mavis - as a single, centralized entity - was able to make a real business decision to cover the loss itself and reimburse affected users directly, exactly as this chapter describes actually happening. A fully decentralized protocol, by contrast, deliberately has no equivalent single party in that position, per Course 1's own core trust-minimization theme running through this entire course - that's the whole point of building it that way. If such a protocol suffers a comparable loss (through a real code vulnerability, per Chapter 7, or any other cause), there is no company treasury, and typically no formal legal entity at all, that can simply decide to cover users' losses the way Sky Mavis did. Any real recovery would instead have to come from the community itself - through something like a DAO vote (Chapter 6) to use treasury funds if one exists, or simply not happen at all if no such mechanism or fund is in place. This is a real, honest trade-off worth naming directly: the same centralization Course 1 and this course have repeatedly treated as a real risk (a single point of failure, per Chapter 5's own RPC-provider discussion) is also exactly what gave Ronin's users a real safety net a genuinely decentralized protocol's users wouldn't have had available in the same situation. ANSWER: Sky Mavis is a real, centralized company with its own treasury and the authority to voluntarily absorb the loss and reimburse users directly - a fully decentralized protocol deliberately has no equivalent single party able to make that same decision, so an equivalent loss there would typically have no guaranteed path to being made whole, beyond whatever a community-governed mechanism (like a DAO treasury vote) might separately choose to do, if one even exists. ---- WHY THIS WORKS AS AN ANSWER This identifies the specific structural difference (a centralized company able to unilaterally absorb a loss vs. no equivalent party in a decentralized system) and explicitly frames it as a real trade-off tying back to this course's own recurring centralization-vs- decentralization theme, rather than treating Ronin's reimbursement as simply good luck.