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NiPoPoWs (Non-Interactive Proofs of Proof-of-Work) are cryptographic proofs that compress blockchain history. Instead of downloading gigabytes of blocks, light clients can verify the chain with just kilobytes of data. This enables true trustless light wallets, efficient cross-chain bridges, and sidechains - all without trusting third parties.

Building DeFi on Ergo starts with understanding the eUTXO model and ErgoScript. Unlike account-based chains, Ergo's box model provides deterministic execution, strong MEV-resistance, and predictable fee construction. Use Oracle Pools for price feeds, and study existing patterns from Spectrum Finance and SigmaUSD.

Different privacy models for different needs. Monero provides always-on, protocol-level privacy with ring signatures. Ergo offers optional privacy via Sigma Protocols with selective disclosure - you can prove things about data without revealing the data. Ergo excels at programmable privacy (private smart contracts), while Monero excels at simple private transfers.

Start by getting a wallet (Nautilus for browser, Terminus for mobile). Back up your seed phrase securely offline. Get some ERG from a current exchange or verified venue, then make a small test transaction. After that, explore NFTs, mining, DeFi references, or the developer stack if you're a builder.