Fantom co-founder Andre Cronje, known as the godfather of decentralized finance (DeFi), further expressed concerns about the probabilistic finality of blockchains, including Bitcoin and Ethereum, as the market increasingly explores use cases and adoption in the traditional financial sector sees. He said Fantom already fixed it state bloat as Ethereum developers try to solve the state bloat on the chain.
Andre Cronje says that Fantom State Bloat problem
Responding to Ambient Finance founder Doug Colkitt’s belief that Ethereum is the only chain that wants to solve the state bloat in its long-term plan, Andre Cronje said: “I’m pretty confident I can say that we have already solved the state bloat at Fantom dissolved.”
Ethereum’s roadmap involves using Verkle trees to ensure “data is small enough to be associated with each block.” It could help validators and nodes become stateless, as all ‘state’ can be stored off-chain more efficiently.
However, Andre Cronje said that any blockchain that uses probabilistic finality or some variant of the longest chain rule will not solve this problem. Bitcoin and Ethereum chains rely on probabilistic finality. Finality refers to the point at which a block of transactions is considered permanent and cannot be changed or undone.
Fantom used aBFT (Asynchronous Byzantine Fault Tolerance) consensus mechanism, which does not require the longest chain rule.
In addition, Fantom introduced the new database Carmen, a flat storage method that does not use tree or dictionary structures while preserving the cryptographic signature of the world state. This significantly reduces the swelling of the current active state (two epochs). Carmen supports real-time pruning, and while archive nodes still need to retain all data, most validators can enable pruning.
After adopting the above technology, Fantom’s status will be reduced from about 2TB (archive) to 60GB (archive). Cronje said the inflation of the state has been one of Fantom’s major milestones since its inception.
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