Crypto ICO fundraising (Initial Coin Offering) is a method used by blockchain and cryptocurrency startups to raise capital by selling tokens or digital assets to early investors. In an ICO, the startup issues tokens, often linked to the functionality of their platform or ecosystem, in exchange for established cryptocurrencies like Bitcoin or Ethereum, or sometimes even fiat currency. These tokens can later be used within the platform or traded on cryptocurrency exchanges. ICOs became popular as a way for startups to secure funding without going through traditional venture capital or stock offerings, leveraging blockchain technology to reach a global pool of investors.