Bitcoin's core technology stack remains remarkably robust. The protocol still maintains its foundational innovations—from the proof-of-work consensus mechanism to the immutable ledger architecture. But here's what's interesting: as the network evolved, so did the technological capabilities. Features like Taproot and Segwit brought enhanced efficiency and new possibilities to the blockchain. Script flexibility improved, transaction malleability was addressed, and the foundation for second-layer solutions solidified. The question isn't whether Bitcoin retains its original tech—it's about how these base-layer innovations continue to compound. The protocol we interact with today is fundamentally the same beast, just refined through years of rigorous testing and strategic upgrades. Worth asking: which specific technological aspect are you curious about? The consensus layer, the scripting capabilities, or something else?