Polymesh Glossary

Second-layer solutions or layer-2 protocols are “off-chain” blockchain protocols that sit on top of the first layer to facilitate better operations. Layer-2 solutions improve scalability and interoperability and solve operational difficulties by handling interactions on behalf of the base network. Think of layer-2 solutions as something which interact with the chain and perform necessary functions for its operation, but don’t perform those functions on the chain itself. On Polymesh, customer due diligence (CDD) would classify as a layer-2 protocol since CDD providers integrate with one common interface to onboard users onto the network.

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