Once a validator is chosen through the random selection algorithm, they create a new block and add it to the blockchain. Here's a step-by-step breakdown of the process:

1. *Block creation*: The chosen validator creates a new block, which includes:

- A unique block number

- A timestamp

- A hash of the previous block (linking it to the blockchain)

- A list of transactions (validated and verified)

- A block reward (newly minted tokens or coins)

2. *Block validation*: The validator validates the transactions in the block, ensuring they are correct, valid, and follow the blockchain's rules.

3. *Block signing*: The validator signs the block with their private key, proving ownership and ensuring the block's integrity.

4. *Block broadcast*: The validator broadcasts the new block to the network, where it is verified and validated by other nodes.

5. *Blockchain update*: Once verified, the new block is added to the blockchain, updating the ledger and extending the chain.

6. *Network confirmation*: The network confirms the new block, ensuring it is accepted and recognized by all nodes.

By adding a new block to the blockchain, the chosen validator helps maintain the integrity and continuity of the blockchain, while also earning block rewards and transaction fees for their services.