If you had to choose one project and invest for 20 years, which blockchain would you choose? For me, it is CKB - Common Knowledge Base (Nervos network)
Few people know about CKB, but those who know and play CKB have very solid reasons. As follows:
1. PoW is safe, easy to recover if attacked or has problems.
Specifically, not long ago CKB had a problem of not being able to create blocks, miners only needed 2 hours to fix. PoW is also the longest "tested" consensus mechanism with nearly 15 years of Bitcoin operation with not a single incorrect information recorded on the Bitcoin blockchain.