Now open the geth console that has been opened previously, and deploy the contract: However, before deploying the contract, make sure that mining is running on the geth node.
The command below can be used to start mining under the geth console.
A Complete Guide to Understanding This Blockchain Concept
Now paste this Web3 deployment script in the geth console. screenshot: The Web3 deployment script deployment using geth The previous screenshot shows the output as it looks like when the Web3 deployment script is pasted in the geth console for deployment.
You can also see this in the geth logs to verify, you will see messages similar to the one shown as follows: INFO [12-16|13:28:49] Submitted contract creation fullhash=0x9f7c81a5942b01f2e2446cad6f0acbaa00514326fcf0abf7b7a076d172db05d6 contract=0xBD663C5136155cb6d7ED55446888271DCd5092Bc 8.
After the contract is deployed successfully you can query various attributes related to this contract which we will also use example.
For example, contract address, ABI definition and so on. screenshot.
Remember all these commands are issued via geth console, that we have already opened and used for contract deployment.
> personal.unlockAccount(personal.listAccounts[0]) Unlock account 0xcf61d213faa9acadbf0d110e1397caf20445c58f Passphrase: True 6. Now open the geth console that has been opened previously, and deploy the contract: However, before deploying the contract, make sure that mining is running on the geth node. The command below can be used to start mining under the geth console. > Miner.start(1) 7. Now paste this Web3 deployment script in the geth console. screenshot: The Web3 deployment script deployment using geth The previous screenshot shows the output as it looks like when the Web3 deployment script is pasted in the geth console for deployment. You can also see this in the geth logs to verify, you will see messages similar to the one shown as follows: INFO [12-16|13:28:49] Submitted contract creation fullhash=0x9f7c81a5942b01f2e2446cad6f0acbaa00514326fcf0abf7b7a076d172db05d6 contract=0xBD663C5136155cb6d7ED55446888271DCd5092Bc 8. After the contract is deployed successfully you can query various attributes related to this contract which we will also use example. For example, contract address, ABI definition and so on. screenshot. Remember all these commands are issued via geth console, that we have already opened and used for contract deployment.
Why This Matters for Blockchain Technology
Understanding > personal.unlockAccount(personal.listAccounts[0]) is not just an academic exercise — it has real-world implications for how blockchain systems are designed, deployed, and secured. Whether you are a developer building decentralized applications, a business leader evaluating blockchain adoption, or a curious learner exploring the technology, this knowledge provides a critical foundation.
Key Points to Remember
- Now open the geth console that has been opened previously, and deploy the contract: However, before deploying the contract, make sure that mining is running on the geth node.
- The command below can be used to start mining under the geth console.
- Now paste this Web3 deployment script in the geth console. screenshot: The Web3 deployment script deployment using geth The previous screenshot shows the output as it looks like when the Web3 deployment script is pasted in the geth console for deployment.
- You can also see this in the geth logs to verify, you will see messages similar to the one shown as follows: INFO [12-16|13:28:49] Submitted contract creation fullhash=0x9f7c81a5942b01f2e2446cad6f0acbaa00514326fcf0abf7b7a076d172db05d6 contract=0xBD663C5136155cb6d7ED55446888271DCd5092Bc 8.
Conclusion
> personal.unlockAccount(personal.listAccounts[0]) represents one of the many innovative layers that make blockchain technology so powerful and transformative. As distributed systems continue to evolve, a solid understanding of these core concepts becomes increasingly valuable — not just for developers, but for anyone building, investing in, or working alongside blockchain-powered systems.
Whether you are just starting your blockchain journey or deepening existing expertise, mastering these fundamentals gives you the tools to think clearly about decentralized systems and make smarter decisions in this rapidly evolving space.