The following content has been thoughtfully provided by Rob Viglione, the esteemed CEO of Horizen Labs.
The Ethereum network has experienced monumental advancements over the past year, significantly enhancing its capabilities. Key developments such as EIP-4844, or Dencun, have revolutionized data storage with the introduction of blobs and proto-danksharding. This innovation has made data storage dramatically cheaper for Layer 2 solutions, resulting in a drastic decrease in transaction fees.
Concurrently, Layer 2 solutions, predominantly those of the optimistic variety, have been increasingly integrated into applications. This progress has made transactions possible for less than a penny, marking a significant improvement on Ethereum’s foundational infrastructure. Nevertheless, Ethereum’s network congestion remains a challenge, as escalating real-world blockchain applications contribute to a competitive environment for block space and computing resources.
The congestion issue on Ethereum highlights a crucial sustainability problem. Notably, during peak congestion times, users have faced transaction fees upwards of 2 ETH, and in some instances, transactions still failed as users vied for prioritization. The ideal solution would be to offload a significant portion of computation offchain, ensuring the data remains correct and well-placed through succinct, verifiable proofs.
Zero-knowledge proofs present a possible solution, although their complexity and cost pose challenges. Zk-rollups, for example, necessitate specialized hardware for creating a ZK proof. Then, the proof must be translated into a format that the Ethereum network can recognize, which is a costly and technically demanding process.
In contrast to zk-rollups, optimistic rollups provide a simpler and cheaper verification process. However, zk-rollups may be preferable for businesses looking to maintain confidentiality in their onchain activities, despite the high cost of proof verification.
Rollup Ecosystems and Their Interests
So far, major Layer 2 brands have shown little interest in a modular proof verification solution like zkVerify, which could slash verification costs significantly. Though they might adopt this technology in the future, it is not their current focus. The prevailing belief among these ecosystems is that verifying all ZK proofs on the same chain, and distributing costs among users, is the most efficient method.
Nevertheless, an opportunity lies with rollup-as-a-service (RaaS) providers who favor a modular approach and cater to projects that cannot afford high verification costs. The idea of offloading proofs to a separate chain for verification, then sending them back to Ethereum, resonates with these providers.
Despite the benefits, large L2 solutions argue against this methodology. They contend that moving proof verification offchain could compromise security, even though some already conduct these verifications offchain without publicizing the practice. Furthermore, they prefer to aggregate proofs to dilute costs across a wider transaction base, despite potential delays and increased costs associated with this process.
While aggregation suits many scenarios, it may not be ideal for applications requiring quick transactions and verifications.
Ultimately, reliance on the security and trustworthiness of the Layer 2 platform remains a constant.
The Evolutionary Stalemate of the EVM
Exploration into the ZK space and its compatibility with Ethereum has revealed an outdated model, where Ethereum’s efficiency in processing certain zero-knowledge proofs is hampered by its support for only a limited range of mathematical operations on a single elliptic curve.
This limitation not only introduces inefficiencies and errors but also drives up costs, restricting developers from choosing the most suitable zk-SNARKs for their applications. Although it’s possible for Ethereum to incorporate more sophisticated precompiles, history shows a lack of significant updates since 2017.
The reasons for this stagnation range from lack of demand to the potential impracticality of implementing advanced precompiles on Ethereum. Whatever the case, the result is clear: ZK proof verification remains prohibitively expensive, and the EVM is in desperate need of an overhaul.
Horizen Labs is addressing these challenges head-on by introducing modular proof verification through zkVerify and developing an EVM-compatible chain that supports the latest zero-knowledge precompiles. Horizen 2.0, built on Substrate, offers forkless upgrades automatically applied post-community vote, eliminating the need for hard forks and manual node updates.
Teams may opt for the dedicated ecosystem of Horizen 2.0 or pursue the RaaS path for tailored rollup construction, taking advantage of offchain proof verification cost savings.
In various ways, evolving the EVM with ZK technology is essential for paving the way for future adoption waves.
Conclusion: A Leap Toward The Future
In the grand spectrum of blockchain technology and Ethereum’s evolution, it’s evident that the road ahead is both complex and exhilarating. The juxtaposition of optimistic rollups’ simplicity against the transformative yet costly potential of zk-rollups paints a vivid picture of blockchain’s evolving landscape. With ingenious solutions like zkVerify on the horizon, the collective dream of a seamless, efficient, and inclusive blockchain ecosystem feels tantalizingly within reach. As we contemplate the future, one filled with rapid transactions, iron-clad security, and groundbreaking innovations, it’s impossible not to be captivated by the myriad of possibilities. Blockchain technology, particularly within the Ethereum ecosystem, stands on the brink of a new dawn, heralding an era of unparalleled growth and opportunity. So, let’s strap in and prepare for an exhilarating ride into the future, where the boundaries of blockchain technology are pushed to new heights, inviting us to reimagine what’s possible in a digitally connected world.
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