TEMPO'S ARGUMENT FOR L1 FINALITY

Summary from the TLDR Crypto newsletter

Tempo should be a standalone L1, not an Ethereum L2, because real-world payments require sub-second finality that Ethereum (15m) and Bitcoin (60m) can't provide. Since most rollups inherit Ethereum's long finality window, they aren't viable for physical goods or services that can't be reversed. By contrast, self-settled rollups (like those built with Sovereign SDK on Celestia) already hit ~6s finality and are expected to drop to ~300ms, making them better suited for payment rails.