TechFlow reports that Ethereum founder Vitalik Buterin endorsed Taiko CEO danielwang.eth's view on X regarding "If an Ethereum rollup uses another data chain for DA, then it becomes an Ethereum validium."
Vitalik stated that the core of a rollup is unconditional security assurance: even if everyone else colludes against you, you can still withdraw your assets. This guarantee cannot be achieved if DA depends on external systems. However, becoming a validium may be the right choice for many applications, and using a well-designed distributed DA assurance system can be a good way to enhance the practical security of validium.
Validium is a scalability solution for Ethereum Layer 2, which can be understood as a ZKRollup that does not use ETH for its DA layer.
