Polygon zkEVM, the Ethereum Layer 2 network which was launched a year ago this week, appears to be suffering a network outage. Multiple block explorers show an outage of over twelve hours, at time of publishing, since a block was successfully sequenced and added to the chain. 

The Polygon zkEVM team has yet to officially respond, though a message on the zkEVM section of Polygonscan reads "The zkEVM mainnet network is currently on-going unscheduled maintenance, block data might not be up to date."

Launched on March 27, 2023 with a symbolic first transaction by Vitalik Buterin, Polygon zkEVM is a zero-knowledge scaling rollup solution that's compatible with the Ethereum Virtual Machine, or EVM. However, Polygon zkEVM has failed to gain the traction of similar Layer 2 networks, seeing …