Bankless
Bankless

EthCC #4 | "The Polygon zkEVM Frontier" - Mihailo Bjelic

🇫🇷 Welcome to the Bankless EthCC 2022 Experience 🇫🇷 With fantastic guests from all corners of the ecosystem, this 8-part series is an exploration of crypto culture and the current state of Ethereum. In episode 4, Mihailo Bjelic joins us to discuss the announcement of Polygon’s zkEVM. This explosive

Topics Discussed

Episode Summary

Executive Summary: Polygon used ETHCC to unveil its ZK-EVM codebase and road to mainnet, positioning itself in the center of the "ZK-EVM wars." Mihalo explains why EVM equivalence, Ethereum security, and scaling are the core goals, how the team solved major cryptographic and engineering challenges, and why the launch is only the start of a longer public testing and mainnet process.

Main Topics: Polygon’s ZK-EVM announcement (Priority: 5/5): The interview centers on Polygon's ETHCC launch of its ZK-EVM, framed as a major milestone and one of the conference's headline announcements. What ZK-EVM actually is (Priority: 5/5): Mihalo explains ZK-EVM as a zero-knowledge-friendly implementation of the Ethereum Virtual Machine, combining compatibility, security, and scaling. Road to mainnet and release stages (Priority: 5/5): The launch is presented as code release and the start of the path to internal testnet, public testnet, audits, and finally mainnet. Technical breakthroughs and engineering challenges (Priority: 5/5): The conversation highlights the difficulty of proving expensive Ethereum opcodes and the role of Polygon Hermes, Zero, and Miden in solving them. EVM equivalence and ecosystem portability (Priority: 4/5): A major theme is that true EVM equivalence lets developers reuse existing tooling, languages, and apps across EVM chains with minimal friction. Cost, fees, and scaling economics (Priority: 4/5): Mihalo discusses transaction processing costs, negligible fees, spam tradeoffs, and future efficiency improvements via crypto, software, pipelining, and hardware acceleration. Polygon’s broader strategy and token redesign (Priority: 3/5): The interview closes on Polygon’s internal collaboration model and a forthcoming token redesign meant to better reflect the project’s new direction.

Key Arguments: ZK-EVM is Polygon’s biggest announcement and a foundational milestone because it brings Ethereum compatibility, Ethereum security, and scaling together in one system. The launch is not yet mainnet; Polygon released the code and is moving through an internal testnet, public testnet, audits, and a target mainnet by year-end. The hardest part was proving complex Ethereum opcodes like Keccak and ECDSA inside a ZK system; that problem is now solved in this first version. EVM equivalence matters because it preserves the existing Ethereum developer experience, tools, languages, and interoperability across chains. Current operational transaction proof cost is under a penny, with room to improve through cryptography, code optimization, proof pipelining, and hardware acceleration. Polygon’s ZK-EVM came from deep collaboration among Polygon Hermes, Polygon Zero, and Polygon Miden rather than internal competition. Polygon is also preparing a token redesign, suggesting the project’s broader vision has matured beyond the legacy Matic branding.

Data Points: ETHCC timing: 3 teams - The speaker says three teams launched ZK-EVM-related testnets during ETHCC week. Public testnet timeline: ~1 month to 1.5 months - Mihalo estimates the permissionless public testnet will arrive in roughly one month to a month and a half. Mainnet target: 2 to 3 months after public testnet - He says mainnet will follow after audits and battle-testing, with an end-of-year target. Current proof/transaction operational cost: $0.0087 - He cites this as the current cost to process a transaction and generate proofs. Cost per transaction: < $0.01 - He summarizes the operational cost as a little less than one cent. Current Ethereum test pass rate: ~30% - He says the ZK-EVM client is currently passing around 30% of Ethereum’s official tests. Polygon Hermes acquisition timing: ~1 year ago - The host references a phone call from the prior ETHCC that preceded the Hermes acquisition announcement. Compression/pipelining example: 20 provers -> ~3 seconds - Mihalo explains that pipelining 20 one-minute provers can reduce effective latency to about 3 seconds.

Pivotal Quotes: "Today, as you probably know, and as some people already saw the news, we announced ZK VM." — Mihalo: Opening the technical announcement and framing the significance of the launch. "This was the challenging part: proving these complicated opcodes of Ethereum like Kekak, ECDSA, and some others was really, really hard." — Mihalo: Describing the core engineering challenge behind building a ZK-EVM. "We are currently redesigning the token." — Mihalo: Discussing Polygon’s next strategic step beyond the ZK-EVM launch.

Implications: Polygon’s ZK-EVM launch signals that zk-based Ethereum scaling is moving from theory to production code. If the roadmap holds, developers could get Ethereum-native tooling with lower costs and stronger scalability, intensifying competition among layer-2 ecosystems.

🔓 Sign Up for Unlimited Episode Search

About Bankless

View all episodes from Bankless