Ethereum co-founder Vitalik Buterin broadcast live on YouTube at the Ethereum Community Conference on Friday, March 5th, introducing a blockchain scalability solution called Plasma Cash. The solution, which is a "more scalable" version of the existing solution Plasma.
Plasma Cash was developed by Buterin, Dan Robinson and Karl Floersch.
Plasma is the chain-extensible solution introduced by Buterin and Lightning Network founder Joseph Poon for the blockchain in August 2017. It reduces the transaction costs of smart contracts and decentralized applications (DApps) by optimizing the data passed to the main blockchain.
According to Buterin, the scalability issue with Plasma is that each user must download and verify each Plasma block.
To explain the Plasma Cash model, Buterin also gives an example: If a user deposits a certain amount of Ethereum into an encrypted exchange or any third-party service, then a Plasma coin will be created, which will have the same weight as the Ethereum. Value and unique ID that cannot be merged or split.
Compared to Plasma, Plasma Cash only requires users to pay attention to the blocks of coins they want to track:
“Users actually only need to verify the usability and correctness of the Plasma chain on coins, or on coin-specific indices that they own and care about.â€
As for the practical application of Plasma Cash, Buterin believes that encrypted exchanges may use this technology to make themselves more resistant to "hacker" attacks.
Since each Plasma coin has an owner, these coins cannot be completely replaced or interchanged: no one can take another user's coin without notifying other users. In this case, the owner of the coin will prevent potential fraud through the “appeal system†by presenting its “certificate of data on the history of the coinâ€.
Buterin pointed out that even if a hacker uses Plasma Cash to trade, users will not lose their money:
“No matter what happens during the transaction, users can exit their program through Plasma to process their funds and then withdraw the money.â€
Buterin made a positive prediction about the future of Plasma Cash at the end of the presentation:
"When a multi-billion dollar exchange is hacked because of incompetent developers, no one will lose any money."
Recently, SegWit, a scalable solution for Bitcoin (BTC), has been implemented on various cryptographic exchanges. The Bitfinex exchange announced the implementation of SegWit on February 20, and Coinbase announced the implementation of SegWit on February 23. The Bitcoin Core client version, which fully supports SegWit technology, was also officially released on February 26.
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