According to Adam Back on Twitter, Bitcoin's architecture is fundamentally driven by the 'timechain' concept, which uses proof of work to establish an immutable sequence of transactions. Back emphasizes that Bitcoin should be recognized as a timechain rather than a blockchain, underlining the significance of proof of work for ensuring trustless transaction ordering and market integrity (Source: Adam Back, Twitter, May 21, 2025). For traders, this focus on proof of work and the timechain highlights Bitcoin's security advantages over other crypto assets, reinforcing its position as the leading digital asset amid ongoing debates about blockchain scalability and security.