According to André Dragosch, PhD (@Andre_Dragosch), Bitcoin leverages the SHA-256 cryptographic hash function, which is fundamental to its network security and resistance against double spending or fraudulent transactions. SHA-256 ensures that Bitcoin transactions are extremely difficult to alter or reverse without immense computational power, making attacks such as double-spending and 51% attacks highly unlikely at current network scales (source: @Andre_Dragosch on Twitter, May 27, 2025). For crypto traders, this strong security underpins trust in the network and enhances Bitcoin’s appeal as a safe-haven digital asset. Understanding the technical robustness of SHA-256 can help traders assess risk and make informed decisions, especially when comparing Bitcoin to altcoins with different security protocols.