Tamper-Proof Ledger

Blockchain technology places a strong emphasis on security, aiming to create ledger systems that are theoretically immune to tampering. Currently, the global monetary system relies on multiple ledgers, with banks and credit card companies being prime examples. These institutions store transaction data and facilitate the movement of funds between parties. However, the traditional banking system often faces challenges due to the high risk of fraud and data manipulation.

This is where tamper-proof ledgers, specifically blockchain technology, come into play. The concept of a tamper-proof ledger gained prominence with the introduction of the Bitcoin whitepaper. Satoshi Nakamoto, the creator of Bitcoin, proposed a groundbreaking idea to ensure the integrity of the Bitcoin ledger.

While previous attempts at creating decentralized financial systems focused on preventing ledger tampering, Nakamoto realized that incentivizing users not to tamper with the ledger would be sufficient. Bitcoin, and in particular the Bitcoin blockchain, discourages tampering by automatically excluding any node operator who attempts to manipulate the records. Node operators are responsible for validating transactions and adding new blocks to the chain. They are actively discouraged from tampering because any changes would be easily detected. As a decentralized network, all Bitcoin node operators validate transactions based on the same copy of the ledger. If someone tries to tamper with the records, their copy will not match that of the other node operators, resulting in a lack of consensus. Inactive nodes are those whose copies do not match, and they are excluded from the network.

In essence, Bitcoin is the first natively tamper-proof ledger as it discourages node operators from altering the records. If a node loses consensus with the network and becomes inactive, the operator no longer receives mining rewards. In other words, Bitcoin node operators have no incentive to tamper with the ledger, as doing so would result in a loss of Bitcoin rewards.

Since Bitcoin’s launch in 2009, numerous other blockchains have emerged. Regardless of the consensus mechanism employed, all blockchains incentivize node operators not to tamper with the records. This incentivization mechanism ensures the tamper-proof nature of the distributed ledger, regardless of its growth or the number of added blocks.