Summary

In this chapter, we embarked on finalizing the essential elements of a blockchain system, emphasizing the mechanisms that facilitate secure and efficient transactions. Initially, we focused on completing the blockchain code to ensure a solid foundational structure and protocol. We then delved into memory pools, which play a pivotal role in managing transaction queues before their incorporation into the blockchain. This discussion naturally progressed to understanding UTXOs, vital for processing and validating transactions and indicative of the spendable digital currency amount for users.

Subsequently, the chapter shifted its focus to wallet development, highlighting its significance not just in storing digital currency but also in securing transactions and maintaining user identity within the blockchain through private key management. We explored how blocks are finalized in the blockchain, detailing the selection, verification, and addition of transactions from the memory...