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Clarifying Layer 2 in Bitcoin: Transparency is Key
Bitcoin currently lacks any functioning rollups, necessitating additional tools or protocols to enable them. The concept of Layer 2 (L2) in Bitcoin differs from Ethereum, with its historical context predating Ethereum's existence. L2 in Bitcoin encompasses a broader definition, including established networks like Liquid. While debates over specific terminologies like sidechains versus federated networks persist, the essential focus should be on the transparency of security properties. Users must be informed about the trust assumptions when transferring Bitcoin from Layer 1 to Layer 2, as complete trustlessness is not always achievable. Clear communication about these assumptions is crucial to understanding the system's security and ensuring user confidence.