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Scalability Meaning

Scalability is the ability of a blockchain or financial system to handle a growing amount of work, typically measured in Transactions Per Second (TPS), without sacrificing performance, security, or costs. For a global payment network, scalability is the Final Boss of technical challenges, as it requires a system to process thousands of transactions per second across a decentralized network of thousands of computers.Technically, scaling is achieved through either Layer 1 (L1) or Layer 2 (L2) solutions.

L1 scaling involves changing the base protocol to handle more data (e.g., Sharding or increasing the block size). L2 scaling involves moving the transactions to a faster, Off-chain layer that periodically Settles on the main blockchain (e.g., Rollups or the Lightning Network).

The challenge is that as you increase speed, you often have to increase the hardware requirements for nodes, which can lead to Centralization.The Scalability Race is what currently defines the competition between blockchains. While Bitcoin and Ethereum have prioritized decentralization (and thus have lower TPS), Alternative Layer 1s like Solana use a different consensus mechanism (Proof of History) to achieve much higher speeds on the base layer.

The ultimate goal is to reach Web2-level scalability-matching the 65,000+ TPS of the Visa network-while maintaining the Trustless and Censorship-resistant nature of the blockchain.

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