- HODL
- To hold rather than sell, coined from a typo in a 2013 forum post, now a strategy.
- DCA
- Dollar-cost averaging. Buying a fixed amount on a fixed schedule to smooth out price volatility.
- Self-custody
- Holding your own private keys instead of trusting an exchange to hold them for you.
- Seed phrase
- A 12 or 24-word backup that fully reconstructs your wallet on any device.
- Hot wallet
- A wallet connected to the internet, phone, browser, exchange app. Convenient, more exposed.
- Cold wallet
- A hardware device that signs transactions offline. Safer for long-term storage.
- Gas
- The network fee paid to validators for processing your transaction.
- Stablecoin
- A token engineered to track $1, used as a dollar parking spot inside crypto.
- Mainnet
- The live, real-money version of a blockchain (versus testnet, which is for development).
- FOMO
- Fear of missing out, the emotion responsible for most retail losses.
- Rug pull
- A project where the founders disappear with investor funds. Endemic to low-quality tokens.
- KYC
- Know-Your-Customer. The ID-and-selfie process exchanges run before letting you withdraw fiat.