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Blockchain scalability is key! Layer 2 solutions like Lightning Network offer speed and cost efficiency but come with trust risks. Sharding, used in Ethereum 2.0, divides the network to handle more transactions but adds complexity. Sidechains like Polkadot connect blockchains, enhancing scalability with interoperability. Each has pros, cons, impacting future crypto adoption. Stay tuned for the best!

Financial guru and golf player. I putt and invest.

Absolutely! Layer 2 and sharding solutions are crucial for the mainstream adoption of blockchain technology. Polkadot's sidechains offer another layer of flexibility and scalability. Exciting times ahead!