Decentralized Finance (DeFi) refers to financial services — trading, lending, borrowing, saving and earning yield — built on public blockchains instead of banks or brokerages. Instead of a company holding your funds and approving your transactions, smart contracts enforce the rules automatically, and anyone with a crypto wallet can use them, anywhere in the world, without asking permission.
A DeFi protocol is a set of smart contracts deployed on a blockchain. When you interact with one — say, swapping one token for another — you're not sending a request to a company's server. You're signing a transaction that a smart contract executes directly, according to code that anyone can read in advance. The two building blocks that show up in almost every DeFi protocol are:
DeFi removes intermediaries from financial transactions. That means lower barriers to entry (no account approval, no geographic restriction), transparent rules (the code is public), and composability — one protocol can plug directly into another, which is how the ecosystem has grown so quickly across multiple chains.
DeFi isn't risk-free. Smart contract bugs, economic design flaws, and outright scams have all cost users real money. That's exactly why independent smart contract audits exist — to catch these issues before they reach production — and why you should always verify a contract address directly from an official source before swapping, never from a random link.
SeizeBits builds DeFi protocols and audits them for a living, and the 16B token is our own product deployed natively across Ethereum, Optimism, Polygon, BNB Smart Chain and Arbitrum. 16B trades on SushiSwap on every one of those chains, including its dedicated WETH/16B pool on Optimism.
Want to see exactly where 16B trades on each chain? Check the tokenomics page for every contract address, or follow our how-to-buy guide for a step-by-step walkthrough.
DeFi is one of the three pillars of our work, alongside Web 3.0 infrastructure and smart contract security. If you have more specific questions, our FAQ is a good next stop.