Ethereum Missing Key Element ‘Poseidon Hash’ in zkEVM Privacy Push, Developer Claims

Ameen Soleimani, a distinguished developer of X, criticized Ethereum’s reluctance to implement Poseidon precompile. in replace In a lately shared article, Soleimani expressed concern about Ethereum’s reluctance to implement this hash perform, which is required for environment friendly zk proofs.

Insights into Poseidon’s precompilation delay

Based on Soleimani, this identical function will probably be utilized in different blockchains similar to Solana, Starknet, and Stellar from 2020 to 2022. He criticized the Ethereum group as follows: At all times speaking about “default privateness” However they refuse to make the required technological upgrades to ensure that.

Soleimani argues that if the present state of affairs continues, privateness is not going to be actually enabled on Ethereum as a result of a key aspect is lacking: the zkEVM function.

The developer claimed that the Starknet staff tried to supply some stage of assist to the Ethereum chain however was turned down. Soleimani claims that Ethereum has privateness gaps and is a name to motion for the Ethereum staff.

He’s of the opinion that Ethereum must adapt to the present ZK rollup necessities and enhance the chain. Particularly, EIP-5988 has proposed including Poseidon to EVM addresses beginning in 2022, however this has not been applied. Growth stays stalled, inflicting delays in native shielded transfers.

You will need to make clear that “precompiling” is a built-in, low-cost function that may considerably scale back Ethereum fuel charges. So Ethereum’s continued use of Poseidon with out precompilation makes app privateness impractical at layer 1.

Soleimani claimed that Poseidon is already the “most battle-tested” hash perform and has loved utility within the ZK system, and opined that given its reliability, there isn’t any actual acceptable cause to delay its deployment.

He criticized Ethereum’s roadmap for persevering with to push privateness to layer 2 reasonably than layer 1 proudly owning it. Soleimani needs Layer 1 to proceed to have core zk primitives as a result of with out them personal transactions are too costly.

Privateness roadmap guarantees contradict sluggish implementation

Ethereum founder Vitalik Buterin introduced in April 2025, New privateness roadmap.

Regardless of guarantees of great dedication, implementation stays a problem and stays a controversial concern on this space.

Ernst & Younger’s Paul Brody acknowledged the cost-prohibitive nature of privateness options on Ethereum and expressed hope that blockchain may really be operational in 2026. Mr. Brody mentioned he want to see it. Implementing privateness It’s changing into mainstream for customers and establishments.