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I will write a formal article on the subject for you.
Ethereum: Can a validator include transactions with invalid subscriptions?
In Blockchain Ethereum, validators play a crucial role to ensure network integrity and safety. To achieve this, validators must include valid transactions in their blocks, which are transmitted to the entire network. However, what happens when a validator receives an invalid signature for a transaction? In this article, we will explore if a validator can include these transactions.
The yellow paper
According to the Ethereum Yellow article (Section 2.4), a validator’s decision to include a transaction in its block is based only on the validity of the transaction itself, not any information provided by other nodes or stakeholders. This means that if a validator receives an invalid signature for a transaction, it will still be included in the block.
The case of invalid signatures
Although the yellow article explicitly states that validators should include valid transactions, there are situations where an invalid signature may occur. For example:
- A malicious actor can generate a transaction with an invalid signature and send it to a knot on the net.
- A knot can receive a transaction from an external source and try to add it to your local block.
Can a validator include invalid signatures?
Based on yellow paper, it seems that validators cannot include transactions with invalid subscriptions. The article states that validators should check the validity of each transaction before including it in their block. This ensures that only valid transactions are included in the chain.
However, this does not mean that validators cannot receive or validate invalid signatures from other nodes or sources. In fact, many Ethereum developers and researchers explored ways to deal with cases, such as:
- Implementing additional verification mechanisms to detect invalid signatures.
- Using techniques as optimistic consistency to allow partially valid transactions to be added to a block.
Conclusion
In conclusion, although the yellow article provides clear guidelines on how validators should include transactions in their blocks, it does not explicitly address the possibility of including transactions with invalid subscriptions. However, many Ethereum developers and researchers have explored ways to deal with these cases, and future updates on yellow paper are likely to provide clarification on this subject.
Finally, the ability of a validator to include transactions with invalid subscriptions depends on Blockchain’s specific implementation and design. Although there may be theoretical limitations, it is currently not possible for validators to include invalid signatures in their blocks based only on the information provided by other stakeholders or stakeholders.
