Coinbase’s Base network, which currently relies on optimistic rollups for its connection to the Ethereum mainnet, could expand to include zk-proofs.

Optimistic rollups and zk-proofs are the main two options for creating Ethereum Layer 2 networks at present. The core difference is that optimistic rollups assume transactions are legitimate unless someone proves otherwise, while networks that use zk-proofs submit regular proofs that all transactions are legitimate. The latter is arguably more secure but more expensive.

Coinbase doesn’t want to land on one side of the coin; it wants to take advantage of both approaches.

“Right now people talk about optimistic rollups versus zk-rollups and instead what we've said is, no, we're just going to build a great rollup and we're going to make it …