Fork Choice Algorithms

Algorithm

⎊ Fork choice algorithms represent the core mechanism by which distributed ledgers, particularly blockchains, achieve consensus on the valid history of transactions. These algorithms dictate how nodes select among competing chains, often arising from network latency or malicious activity, to maintain a single, coherent state. Their design directly impacts the security, scalability, and finality characteristics of a cryptocurrency or decentralized application, influencing the probability of double-spending and the overall system robustness. Efficient implementation is crucial for minimizing confirmation times and maximizing throughput, especially in high-volume transaction environments.