Bitcoin began as a cypherpunk manifesto in 2008, a digital cash experiment by Satoshi Nakamoto. It grew from niche forums to early adopters like Hal Finney, then the infamous Mt. Gox era, sparking mainstream media. Today, institutional investors, Wall Street funds, and regulators shape its evolution, turning a fringe tech into a global financial force.
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Scalability keeps the crypto debate alive. Layer‑2 rollups (optimistic and zk) let you keep the main chain’s security while boosting throughput—optimistic rollups are cheaper but slower to confirm, zk rollups offer instant finality at higher cost. Sharding splits the chain itself, trading off complexity for higher capacity, but requires a hard fork. Sidechains run parallel, offering speed but weaker security. Each choice balances speed, cost, decentralization, and safety.
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Ethereum’s smart contracts are the backbone of the decentralized web, enabling trustless agreements, DAOs, NFTs and DeFi. Encoding logic on the blockchain eliminates intermediaries, giving developers a platform that scales with Layer-2 rollups and EIP-1559 fee reforms. As the ecosystem matures, we’re witnessing a shift from permissioned to fully open, resilient infrastructure empowering everyone to build finance, governance, and digital ownership.
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