Metis Node
Metis Sequencer node, which includes modules such as L2Geth, OP-node, batch submitter, and MPC node, responsible for multi-signature key and submitting transactions to L1.
PoS Node
The decentralized solution's newly added PoS node (tentatively named POS, subject to change). The core business is the processing logic of the decentralized solution.
Tendermint
A component used for P2P communication and reaching consensus among multiple nodes, provided by the open-source cosmos-sdk project.
Locking
A smart contract on the Ethereum network responsible for lock-up and list maintenance of decentralized nodes.