While most networks established in 2014 have become history, Syscoin continues to thrive. This longevity is driven by deliberate architecture rather than luck. In this thread, we analyze the engineering pillars that have secured 11 years of ongoing operation in a landscape where competitors have vanished. We will also explain why today's young developers are building on a foundation that has proven its permanence. Key topics include Merged Mining, ChainLocks, UTXO + EVM, and PoDA. 🧵