The Graph and Covalent both index blockchain data for developers, but they're built around different theories: decentralized custom indexing vs. a unified API across chains. Here's the mechanism behind each.

Infura and Alchemy both provide RPC access to Ethereum. The difference isn't which one works — it's what each treats as the core product. One is a reliable relay layer. The other is a developer platform that happens to include chain access.

Full nodes verify everything independently. Light nodes verify only what they need. This is not a storage tradeoff — it's a different theory of what trust should look like on a blockchain network.

Browser wallets and hardware wallets both hold your private keys — but they're built around different theories of where the line between your keys and the internet should sit. Here's how each mechanism actually works.

Mobile and desktop wallets are both hot wallets — but where keys live, what surrounds them at the OS level, and what attack surfaces each creates are meaningfully different. Matching tool to use case is the practical output.

When you leave crypto on an exchange, you hold a claim — not the asset. Self-custody holds the keys directly, but moves risk to key management. The FTX collapse illustrated exactly what counterparty risk looks like when it materialises.

Staking and lending both generate yield on crypto — but through completely different mechanisms. One is network participation. The other is capital deployment. Here's how each actually works.

Bitcoin ETFs and direct self-custody aren't variations on the same exposure — they're built around different theories of what Bitcoin ownership means. A mechanism-level comparison of how each works, where the constraints live, and what the trade-off actually is.

EigenLayer and Symbiotic both let ETH stakers extend security to new protocols. They differ fundamentally in collateral design, slashing mechanics, and who controls what. Here's how each model actually works.

1inch and Paraswap are both DEX aggregators, but they're built around different theories. 1inch optimizes for best-price routing across all sources. Paraswap optimizes for B2B infrastructure. Here's what that means mechanically.

Curve and Uniswap both operate as AMMs without order books, but optimize for fundamentally different things. Curve's StableSwap formula minimizes slippage on correlated assets; Uniswap's concentrated liquidity targets general-purpose price discovery. Here's what that difference actually determines.

GMX and dYdX are both decentralized perpetual trading platforms, but they are built on different theories. GMX uses a pool-based model where liquidity providers act as the counterparty to all trades. dYdX uses a central limit order book designed for professional traders. Here's how each mechanism works, where the constraints live, and what would change the picture.