Matter Labs CEO Alex Gluchowski described Polygon Zero’s claim that zkSync copied its code without proper attribution as “baseless, misleading and extremely disappointing,” according to an Aug. 4 announcement. Position in X, formerly Twitter.
Polygon’s plagiarism category
On August 3, Polygon Miden he said Matter Labs copied “performance-critical components” of the Plonky2 zero-knowledge system code without proper attribution.
The Polygon team stated that the zkSync team made misleading claims that the latest Boojum proof system was 10 times faster than Plonky2. He claimed that this was impossible since Boojum copied Plonky2’s performance code.
Polygon Zero also strongly criticized these actions, saying they were against the core principles of the open source movement. According to the team, such practices could pose a significant threat to smaller development teams, as “better-funded competitors” might exploit their efforts without giving due credit.
Matter Labs denial
In answerGluchowski said claims that zkSync reused code without attribution couldn’t be further from the truth.
According to Gluchoswki, Plonky2 and Boojum are implementations of the RedShift build, which the Matter Labs team introduced three years before Polygon Zero released the Plonky2 paper.
Although Polygon cited RedShift in the paper, Gluchowski said the team did not give Matter Labs any credit.
He explained that only about 5% of the Boojum code is based on Plonky2 code, and the team acknowledged Plonky2 in the README file and the introduction post.
However, he admitted that zkSync could have handled it better and was using a more standard approach to rendering, which would be done next. But he criticized the public accusations as against the spirit of open source.
“If the Polygon Zero team wanted additional credit, the easiest way would be to submit a pull request which we would gladly accept.”
Meanwhile, Gluchowski expressed surprise at complaints about benchmarking. He noted that there was no need for the Polygon Zero team to publish their code for benchmarking and approve it if they were unhappy with the benchmarking functionality or if they weren’t optimizing their implementations.
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