Glossary OS

Plain meaning

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Negative or misleading information spread about a cryptocurrency, protocol, or the broader market, whether intentionally to manipulate prices or organically from genuine concerns. FUD can range from legitimate security warnings to baseless rumors designed to cause panic selling. Evaluating whether negative information is FUD or a real concern requires critical thinking and independent research, reinforcing the importance of DYOR.

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Technical context

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Wallets, signing flows, dApps, and key management concepts.

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FUD (Fear, Uncertainty, and Doubt) (fud)
Category: Web3
Definition: Negative or misleading information spread about a cryptocurrency, protocol, or the broader market, whether intentionally to manipulate prices or organically from genuine concerns. FUD can range from legitimate security warnings to baseless rumors designed to cause panic selling. Evaluating whether negative information is FUD or a real concern requires critical thinking and independent research, reinforcing the importance of DYOR.
Aliases: FUD
Related: FOMO (Fear Of Missing Out), DYOR (Do Your Own Research)

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Concept graph

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Branch

FOMO (Fear Of Missing Out)

The anxiety-driven urge to buy a token or enter a position because its price is rising rapidly and others appear to be profiting. FOMO often leads to impulsive decisions such as buying at market peaks without proper research, chasing pumps, or over-allocating to a single asset. Recognizing FOMO as an emotional bias rather than a rational signal is a key skill for managing risk in crypto markets.

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Branch

DYOR (Do Your Own Research)

A widely used crypto community phrase encouraging individuals to independently investigate projects, tokens, and protocols before investing or participating. DYOR means reading documentation, checking audit reports, verifying team backgrounds, reviewing on-chain data, and understanding tokenomics rather than relying solely on social media hype or influencer recommendations. The phrase serves as both advice and a disclaimer in crypto discussions.

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Open term

Next concepts to explore

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Web3

FOMO (Fear Of Missing Out)

The anxiety-driven urge to buy a token or enter a position because its price is rising rapidly and others appear to be profiting. FOMO often leads to impulsive decisions such as buying at market peaks without proper research, chasing pumps, or over-allocating to a single asset. Recognizing FOMO as an emotional bias rather than a rational signal is a key skill for managing risk in crypto markets.

Open term

Web3

DYOR (Do Your Own Research)

A widely used crypto community phrase encouraging individuals to independently investigate projects, tokens, and protocols before investing or participating. DYOR means reading documentation, checking audit reports, verifying team backgrounds, reviewing on-chain data, and understanding tokenomics rather than relying solely on social media hype or influencer recommendations. The phrase serves as both advice and a disclaimer in crypto discussions.

Open term

Web3

Gas / CU Optimization

The practice of minimizing computational costs in smart contracts to reduce transaction fees and fit within resource limits. On Solana: reduce account reads, use zero-copy deserialization for large accounts, minimize logging, pre-compute PDAs. On Ethereum: use packed storage slots, avoid dynamic arrays, use events instead of storage for read-only data.

Open term

Web3

The vision of a decentralized internet built on blockchain technology, where users own their data, identity, and digital assets. Web1 was read-only (static pages), Web2 is read-write (platforms like social media), Web3 is read-write-own (permissionless, user-sovereign). Web3 applications use wallets instead of logins and smart contracts instead of centralized servers.

Open term

Commonly confused with

Terms nearby in vocabulary, acronym, or conceptual neighborhood.

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Web3pump-and-dump

Pump and Dump

Market manipulation scheme where promoters accumulate a low-cap token, artificially inflate its price through coordinated hype (social media shilling, fake partnerships), then sell their holdings at the peak, crashing the price. Especially prevalent with memecoins on Solana due to low launch costs on platforms like pump.fun.

Open term

Related terms

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Web3fomo

FOMO (Fear Of Missing Out)

The anxiety-driven urge to buy a token or enter a position because its price is rising rapidly and others appear to be profiting. FOMO often leads to impulsive decisions such as buying at market peaks without proper research, chasing pumps, or over-allocating to a single asset. Recognizing FOMO as an emotional bias rather than a rational signal is a key skill for managing risk in crypto markets.

Open term

Web3dyor

DYOR (Do Your Own Research)

A widely used crypto community phrase encouraging individuals to independently investigate projects, tokens, and protocols before investing or participating. DYOR means reading documentation, checking audit reports, verifying team backgrounds, reviewing on-chain data, and understanding tokenomics rather than relying solely on social media hype or influencer recommendations. The phrase serves as both advice and a disclaimer in crypto discussions.

Open term

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Web3

The vision of a decentralized internet built on blockchain technology, where users own their data, identity, and digital assets. Web1 was read-only (static pages), Web2 is read-write (platforms like social media), Web3 is read-write-own (permissionless, user-sovereign). Web3 applications use wallets instead of logins and smart contracts instead of centralized servers.

Open term

Web3

dApp (Decentralized Application)

An application with its backend logic running on a blockchain as smart contracts rather than centralized servers. dApps typically have a traditional web frontend that interacts with on-chain programs via RPC. Users authenticate with wallets instead of username/password. Examples: Uniswap (Ethereum DEX), Jupiter (Solana DEX), Magic Eden (NFT marketplace).

Open term

Web3

Wallet

Software or hardware that manages cryptographic keys and enables users to sign transactions, view balances, and interact with dApps. Hot wallets (Phantom, Solflare, Backpack) are internet-connected for convenience. Cold wallets (Ledger, Trezor) store keys offline for security. Wallets don't actually 'hold' tokens—they hold the private keys that control on-chain accounts.

Open term

Web3

Seed Phrase (Mnemonic)

A 12 or 24-word human-readable backup of a wallet's master private key, generated using BIP-39 standard. The seed phrase can deterministically regenerate all derived keypairs (BIP-44 derivation paths). Losing the seed phrase means permanently losing access to all associated accounts. Never share, photograph, or store seed phrases digitally in plain text.

Open term