Blockchain Explained

Blockchain technology powers the 2025 crypto boom, a decentralized ledger set to manage $12.5 trillion.
Bitcoin introduced it in 2009, linking blocks of data via cryptography, with 144 blocks mined daily at 10 minutes each.
This ensures immutability and transparency, trusted by millions globally.
Ethereum expanded it with smart contracts, executing code autonomously, handling 1.5 million daily transactions.

Sharding will boost Ethereum to 100,000 TPS by 2025, supporting DeFi and NFTs.
Solana’s 65,000 TPS and Avalanche’s 4,500 TPS challenge its lead with speed and scalability.
Consensus mechanisms secure the network.
Proof-of-Work (PoW) in Bitcoin requires miners to solve puzzles, using 130 TWh yearly—Argentina’s energy use.

Proof-of-Stake (PoS), adopted by Ethereum, stakes coins for validation, cutting energy by 99%.
This attracts eco-investors, with 20% of funds shifting to PoS chains.
Proof-of-Authority suits private blockchains, used by 10% of enterprises.
Applications are transformative.

Walmart cuts supply chain audits by 25% with blockchain tracking.
Estonia reduces voting fraud by 30%, and healthcare secures 15 million records.
Crypto wallets depend on it, with 350 million users by 2025, per Statista.
Start with Ethereum’s Sepolia testnet, coding contracts in Solidity via Remix.

Invest in active projects—check 50+ GitHub commits monthly.
Security is critical—51% attacks cost $25 million in 2023.
Diversify across 3-5 blockchains to mitigate risks.
US utility status and EU’s MiCA law may drive growth, while bans shift hubs.

Join r/Blockchain for insights.
With 2025’s expansion, mastering blockchain could yield $60,000+ in crypto gains.
Research and patience are your tools for success.