Crypto Glossary — 333 Terms

Crypto Glossary: All Crypto Terms Explained

English definitions of Bitcoin, Ethereum, DeFi, NFT and other crypto terms. The COINOTAG comprehensive crypto glossary.

Protocols13

0x Protocol: Decentralized Exchange Infrastructure for Ethereum Tokens

0x is an open protocol that provides shared infrastructure for decentralized, non-custodial trading of ERC-20 and other tokens on Ethereum and EVM-compatible chains. It uses an off-chain order relay model paired with on-chain settlement through audited smart contracts, so users keep custody of their assets and only pay gas when a trade actually executes. Participants called relayers host shared order books, and the protocol aggregates liquidity across order books and automated market makers to route trades to the best available price. Its native token, ZRX, is used mainly for governance and coordinating the network of liquidity providers across the ecosystem.

Arc Blockchain: Circle's Stablecoin-Native Layer-1 Explained

Arc is an open, EVM-compatible Layer-1 blockchain built by Circle for stablecoin-native finance. Unlike general-purpose chains, it pays network fees in USDC rather than a volatile token, delivers deterministic transaction finality in under a second, and ships with built-in foreign-exchange (StableFX) and cross-chain (CCTP, Gateway) tooling. Native assets include USDC for settlement and gas, EURC for euro flows, and USYC for tokenized Treasury yield. Arc targets payments, cross-border settlement, on-chain FX, and tokenized capital-markets use cases for financial institutions, fintechs, and developers — positioning Circle as a builder of stablecoin settlement infrastructure rather than only a stablecoin issuer.

Aztec Network: Ethereum's Zero-Knowledge Privacy Layer Explained

Aztec Network is a privacy-first Layer 2 zkRollup on Ethereum built for private transactions and private smart contracts. Instead of merely obscuring transfers like a mixer, it lets developers choose which parts of an application stay confidential and which stay public, enforcing those choices through zero-knowledge proofs and encrypted state. Private logic runs client-side in a Private Execution Environment, public logic runs in the Aztec Virtual Machine, and final validity settles on Ethereum. This dual-state model, combined with notes, nullifiers, and native account abstraction, makes programmable privacy and selective disclosure possible without leaving Ethereum's settlement, liquidity, and composability behind.

dappOS: The Intent-Centric Operating Protocol Explained

dappOS is an intent-centric operating protocol for Web3 that lets users declare a desired outcome instead of crafting each transaction. A decentralized network of Super Nodes and Service Nodes then plans and executes the steps — bridging, gas payment, wallet switching, and contract calls — behind a single signature. It combines account abstraction, chain abstraction, and a unified multi-chain account so that complex cross-chain actions feel as simple as a centralized exchange. Service Nodes post collateral and compete via a bidding system, and failed orders are refunded through over-collateralization, giving DeFi a smoother, CeFi-like user experience without sacrificing self-custody.

What Is Fogo? The Trading-Focused SVM Layer-1 Explained

Fogo is a Layer-1 blockchain that runs the Solana Virtual Machine (SVM) and is optimized for fast, low-friction DeFi trading. It keeps the Solana-style execution environment so developers can reuse existing programs and tooling, then adds network-level optimizations — a Firedancer-based validator client and zone-based consensus — to lower latency. Its standout feature, Fogo Sessions, lets users interact with apps gaslessly without signing every transaction by granting a time-limited, scoped permission. The native FOGO token funds gas, staking yield, and ecosystem grants. Fogo targets active traders and Solana-savvy builders, but carries new-network, bridge, and smart-contract risks worth understanding before committing real funds.

See all (13 Protocols)

Coins104

Aave (AAVE): What Is It? Definition & Explanation

Aave (AAVE) is a decentralized lending protocol that lets users borrow against crypto collateral or earn interest by depositing assets into liquidity pools. Launched on Ethereum in 2020, Aave invented the flash loan and has become one of DeFi's foundational infrastructure layers with multi-chain support.

Aerodrome Finance (AERO): What Is It? Definition & Explanation

Aerodrome Finance (AERO) is the leading liquidity hub and decentralized exchange (DEX) on the Base network developed by Coinbase. Derived from Velodrome and building on the Solidly model, Aerodrome offers a unique incentive system featuring vote-escrow and bribe mechanisms where protocols compete to direct liquidity.

AGT (Alaya Governance Token): What Is It? Definition & Explanation

AGT (Alaya Governance Token) is the governance and reward token of Alaya AI, a decentralized AI data contribution platform running on BNB Chain. Through gamification mechanics and an NFT-based identity system, it incentivizes users to produce and validate data for AI models.

Algorand (ALGO): What Is It? Definition & Explanation

Algorand (ALGO) is a high-performance Layer-1 blockchain designed in 2017 by Turing Award-winning MIT professor Silvio Micali, operating on a Pure Proof-of-Stake (PPoS) consensus. With near-zero energy consumption, Algorand stands out for capacity of up to 10,000 transactions per second and 3–5 second finality.

AltLayer (ALT): What Is It? Definition & Explanation

AltLayer (ALT) is an Ethereum L2 infrastructure protocol that offers rollups-as-a-service (RaaS), secured by EigenLayer restaking. Supporting multiple rollup frameworks including OP Stack, Arbitrum Orbit, and ZK Stack, AltLayer makes it easy for projects to launch their own application chains.

See all (104 Coins)

tradfi90

Adobe (ADBE): What Is It? Definition & Explanation

Adobe Inc. (ADBE), founded in 1982, is the American software company that set the standards for the creative content world with Photoshop, Illustrator, Premiere Pro, and the PDF format. Its shift to a cloud subscription model generates highly predictable recurring revenue. It trades on COINOTAG as a tokenized perpetual futures contract.

Alibaba (BABA): What Is It? Definition & Explanation

Alibaba Group (BABA) is a multinational technology holding company founded in 1999 by Jack Ma in Hangzhou, China, that has largely shaped the country's e-commerce, cloud computing (Alibaba Cloud), digital payments (Alipay), and logistics ecosystem. Home to China's largest retail and wholesale e-commerce platforms, Alibaba has been navigating a significant transformation since regulatory pressure intensified after 2020.

Alphabet (GOOGL): What Is It? Definition & Explanation

Alphabet Inc. (GOOGL) is the parent company of Google. Through its search engine, YouTube, Android, Google Cloud, and AI research (DeepMind), it controls a dominant share of global digital advertising revenue. Its tokenized stock trades on COINOTAG as a perpetual futures contract.

Amazon (AMZN): What Is It? Definition & Explanation

Amazon (AMZN) is one of the world's largest companies, founded by Jeff Bezos in 1994, with operations spanning e-commerce, cloud computing (AWS), digital advertising, and artificial intelligence. Amazon Web Services (AWS) is the backbone of its profitability, while the Prime membership ecosystem keeps hundreds of millions of consumers on its platform.

Advanced Micro Devices (AMD): What Is It? Definition & Explanation

Advanced Micro Devices (AMD) is an American semiconductor company founded in 1969 that competes with Intel in CPUs and with NVIDIA in GPUs. With its Ryzen processors, Radeon graphics cards, and AI-focused Instinct GPUs, AMD holds a strong position in both the consumer and enterprise markets.

See all (90 tradfi)

Concepts109

AI Crypto Wallet

An AI crypto wallet is a digital wallet that stores your private keys and balances like any wallet, but adds a machine-learning layer to automate transactions, detect fraud in real time, optimize gas fees, and deliver portfolio insights. Rather than manually timing trades or watching for suspicious activity, you let the wallet learn your patterns and act as a co-pilot. Most are non-custodial, so you still control the keys; the AI operates on the convenience and security layer, not custody. The result is an active assistant for managing on-chain assets across DeFi, trading, and everyday transfers, balanced against new privacy and over-reliance risks.

AI Trading Bot

An AI trading bot is automated software that uses artificial intelligence and machine learning to analyze market data, detect patterns, and execute trades on exchanges with little to no human intervention. Unlike traditional rule-based bots that only follow fixed if-then instructions, an AI bot adapts its strategy as markets change and learns from past outcomes through feedback loops. It is especially common in crypto, where markets trade 24/7 and prices move fast. Core components are data input, decision-making, and trade execution. AI bots remove emotion and react in milliseconds, but they still depend on strategy quality, clean data, secure API keys, and human oversight to perform safely.

Algorithmic Stablecoins: How Code-Backed Pegs Really Work

An algorithmic stablecoin is a crypto token that maintains a price peg (usually to the US dollar) through code-enforced supply rules rather than a bank account full of cash. Smart contracts automatically mint new tokens when the price drifts above the target and burn or contract supply when it drops below, using arbitrage incentives to nudge traders back toward equilibrium. Unlike fiat-backed stablecoins such as USDT or USDC, a purely algorithmic design holds little or no off-chain collateral, prioritizing decentralization and censorship resistance over hard reserves. This makes the model capital-efficient but fragile: when confidence breaks, the same feedback loop can drive the token toward zero in a death spiral.

What is an Altcoin? Complete Crypto Guide

Altcoins are cryptocurrencies other than Bitcoin, ranging from major networks like Ethereum to thousands of smaller tokens with diverse use cases.

AltVM (Alternative Virtual Machine)

An AltVM (Alternative Virtual Machine) is any blockchain execution environment that is not the Ethereum Virtual Machine (EVM). Where the EVM is a general-purpose engine running smart contracts sequentially, AltVMs are purpose-built to optimize for a single quality the EVM handles poorly: parallel transaction execution, lower latency, zero-knowledge proof generation, resource-oriented asset safety, or flexible languages such as Rust. Prominent examples include Solana's SVM, the Move VM (Aptos, Sui), Cairo VM (Starknet), CosmWasm and zkVMs. They do not aim to replace the EVM but to complement it inside an increasingly modular, multi-chain ecosystem where different applications pick the execution model that fits their needs.

See all (109 Concepts)

Events9

What is an Airdrop? Complete Crypto Guide

An airdrop is the free distribution of cryptocurrency tokens to wallet addresses, typically used for marketing, decentralization, or rewarding early supporters.

What is a Bear Market? Complete Crypto Guide

A bear market is a prolonged period of declining asset prices, typically marked by a 20%+ drop from recent highs and persistent negative sentiment.

What is a Bull Market? Complete Crypto Guide

A bull market is a sustained period of rising asset prices, typically defined as a 20%+ increase from recent lows accompanied by strong investor sentiment.

What is a Fork in Crypto? Hard Fork vs Soft Fork

A fork is a divergence in a blockchain's rules or history, creating either a backward-compatible upgrade (soft fork) or a separate chain (hard fork).

What is the Bitcoin Halving? Complete Guide

The Bitcoin halving is a programmed event occurring every ~4 years that reduces the block reward miners earn by 50%, gradually slowing BTC issuance.

See all (9 Events)

Metrics8

What is All-Time High (ATH)? Complete Guide

All-Time High (ATH) is the highest price a cryptocurrency or asset has ever reached, often used as a key reference point for traders and investors.

What is Circulating Supply? Complete Guide

Circulating supply is the number of cryptocurrency tokens publicly available and actively trading in the market, excluding locked or reserved tokens.

What is the Crypto Fear and Greed Index?

The Crypto Fear and Greed Index is a market-sentiment metric that scores investor emotion on a scale of 0 to 100, where 0 signals extreme fear and 100 signals extreme greed. It blends weighted data points — volatility, market momentum and volume, social media activity, Bitcoin dominance, surveys, and Google Trends — into a single daily number. Built mainly around Bitcoin, it is used as a contrarian gauge: extreme fear can mark discounted prices and potential buying zones, while extreme greed often flags an overheated market at risk of correction. It is a sentiment filter, not a standalone buy or sell signal.

What is a Gas Fee? Complete Ethereum Guide

A gas fee is the cost paid to execute transactions or smart contracts on a blockchain like Ethereum, denominated in the network's native asset.

What is MACD? Complete Technical Analysis Guide

MACD (Moving Average Convergence Divergence) is a momentum indicator that shows the relationship between two moving averages of an asset's price.