Metis Node
![Cube image](https://cdn.prod.website-files.com/6507242ad3e4e6ff563301e4/65a1b4d05702c050147ba4ef_c1.svg)
![Cube image](https://cdn.prod.website-files.com/6507242ad3e4e6ff563301e4/65a2a9f07c89e05bfa560c62_cube.png)
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
![Hexa image](https://cdn.prod.website-files.com/6507242ad3e4e6ff563301e4/65a1b64de674c363407458c0_c2.png)
![Hexa icon](https://cdn.prod.website-files.com/6507242ad3e4e6ff563301e4/65a2a9fa73352e86a38a1d85_hexagono.svg)
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
![User icon](https://cdn.prod.website-files.com/6507242ad3e4e6ff563301e4/65a1b655d85410c66463b959_c3.svg)
![Users icon](https://cdn.prod.website-files.com/6507242ad3e4e6ff563301e4/65a2aa03322cb1690d0b4386_users.svg)
A component used for P2P communication and reaching consensus among multiple nodes, provided by the open-source cosmos-sdk project.
Locking
![padlock icon](https://cdn.prod.website-files.com/6507242ad3e4e6ff563301e4/65a1b65d89f7470b14ee92ee_c4.svg)
![padlock icon](https://cdn.prod.website-files.com/6507242ad3e4e6ff563301e4/65a2aa0bfc7dec3e8e57404b_padlock.svg)
A smart contract on the Ethereum network responsible for lock-up and list maintenance of decentralized nodes.