How is GHOSTDAG related to Bitcoin's security model?

GHOSTDAG is a mathematical generalization of Bitcoin's Nakamoto Consensus — the same consensus mechanism that has secured Bitcoin since 2009. Generalizing means GHOSTDAG extends the original model rather than replacing it: the core security guarantees carry over, while the protocol adds the ability to handle parallel blocks in a blockDAG instead of a single chain. For a beginner, the practical takeaway is that Kaspa's proof-of-work security shares the same mathematical foundations as the world's most studied proof-of-work blockchain, rather than starting from scratch.