> ## Documentation Index > Fetch the complete documentation index at: https://docs.webacy.com/llms.txt > Use this file to discover all available pages before exploring further. # Definitions > Plain-language definitions of key blockchain, DeFi, and crypto risk terms used across the Webacy documentation, from address clustering to wash trading. ### Address A **blockchain address** is a unique identifier that represents a destination for sending or receiving digital assets on a blockchain network. *** ### Address Clustering **Address clustering** is a blockchain analysis technique used to group multiple wallet addresses that are likely controlled by the same user or entity based on transaction behavior. *** ### Algorithmic Stablecoin An **algorithmic stablecoin** maintains its price stability through automated supply adjustments rather than backing by reserves of fiat currency or other assets. *** ### APY (Annual Percentage Yield) **Annual Percentage Yield (APY)** is the annualized rate of return on a deposit or investment, accounting for compound interest. In DeFi, APY is commonly used to express the yield earned by depositing assets into lending protocols, liquidity pools, or vaults. *** ### AML (Anti-Money Laundering) **Anti-Money Laundering (AML)** refers to regulatory frameworks and procedures designed to prevent the use of financial systems for illicit activities such as money laundering or terrorist financing. *** ### Behavioral Risk Signals **Behavioral risk signals** are patterns in blockchain activity that may indicate suspicious or high-risk behavior. These signals can include unusual transaction patterns, rapid fund movements across multiple addresses, interactions with known illicit services, or coordinated activity across wallets. *** ### Block A **block** is a group of validated transactions that is added to the blockchain ledger and cryptographically linked to the previous block. *** ### Blockchain A **blockchain** is a distributed digital ledger that records transactions across a network of computers, ensuring transparency, immutability, and shared verification. *** ### Blockchain Explorer A **blockchain explorer** is a tool that allows users to view blockchain data including transactions, wallet balances, blocks, and network activity. *** ### Blockchain Forensics **Blockchain forensics** is the practice of analyzing blockchain transaction data to trace funds, identify suspicious activity, and investigate potential financial crimes. *** ### Bridge A **blockchain bridge** enables digital assets and data to move between different blockchain networks. *** ### Centralized Exchange (CEX) A **centralized exchange** is a platform that facilitates the trading of digital assets and is operated by a centralized entity that manages custody, order books, and transactions. *** ### Collateral **Collateral** is an asset pledged by a borrower to secure a loan. In DeFi lending, borrowers deposit tokens as collateral to borrow other assets. If the collateral value drops below a required threshold, it can be liquidated to repay the loan.. *** ### Consensus Mechanism A **consensus mechanism** is the method by which blockchain networks validate transactions and agree on the current state of the ledger. *** ### Contamination Risk A measure of exposure to a compromised, illicit, or structurally weak asset, address, or protocol. **Contamination risk** is propagated into an otherwise sound position through direct or indirect connections. *** ### Cross-Chain Risk **Cross-chain risk** refers to potential threats or vulnerabilities that arise when digital assets move between different blockchain networks. These risks may include bridge exploits, liquidity fragmentation, asset wrapping risks, and difficulty tracking the origin or destination of funds across multiple chains. *** ### Custodial Wallet A **custodial wallet** is a wallet where a third party, such as an exchange or financial institution, controls the private keys and manages assets on behalf of users. *** ### DeFi (Decentralized Finance) **Decentralized finance (DeFi)** refers to financial services built on blockchain networks that operate without centralized intermediaries such as banks or brokers. *** ### Depeg / Depegging A **depeg** occurs when a pegged asset (such as a stablecoin) loses its intended price stability and trades significantly above or below its reference value. Depegs can be caused by liquidity shocks, reserve concerns, oracle failures, or structural flaws in the asset's design. *** ### Digital Asset A **digital asset** is any asset issued and stored digitally on a blockchain or distributed ledger, including cryptocurrencies, tokens, and tokenized financial instruments. *** ### ERC-4626 **ERC-4626** is a token standard for tokenized vaults on EVM-compatible blockchains. It defines a standard interface for deposit, withdrawal, and share accounting, making it easier to build and integrate yield-bearing vaults across DeFi protocols. *** ### Gas Fee A **gas fee** is the cost paid to network validators or miners to process and confirm a transaction on a blockchain. *** ### Governance Token A **governance token** gives holders the ability to participate in decision-making for a protocol, such as voting on upgrades or policy changes. *** ### Honeypot A **honeypot** is a malicious smart contract that allows users to deposit funds but prevents them from withdrawing them. *** ### KYC (Know Your Customer) **Know Your Customer (KYC)** refers to the process financial institutions use to verify the identity of their customers as part of regulatory compliance. *** ### Liquidation **Liquidation** is the forced sale of a borrower's collateral when its value falls below the required threshold in a lending protocol. Liquidation protects lenders from losses but can result in significant capital loss for borrowers, especially during rapid market downturns or cascading liquidation events. *** ### Layer 1 (L1) A **Layer 1 blockchain** is the base network that processes and validates transactions directly, such as Bitcoin or Ethereum. *** ### Layer 2 (L2) A **Layer 2 solution** is a scaling technology built on top of a Layer 1 blockchain to increase transaction throughput and reduce fees. *** ### Liquidity **Liquidity** refers to how easily an asset can be bought or sold in a market without significantly affecting its price. *** ### Looping / Looping Risk **Looping** is a DeFi strategy where a user borrows an asset, re-deposits it as collateral, and borrows again — repeating the cycle to amplify yield. This creates leveraged exposure and increases the risk of liquidation cascades if the collateral value drops. *** ### Liquidity Pool A **liquidity pool** is a pool of digital assets locked in a smart contract to facilitate decentralized trading, lending, or other financial activities. *** ### Liquidity Risk Monitoring **Liquidity risk monitoring** is the ongoing analysis of the availability and stability of liquidity for a digital asset across trading venues, pools, and markets. Monitoring liquidity helps identify conditions such as sudden liquidity withdrawals, concentration risks, or abnormal trading activity that may impact price stability. *** ### MEV (Maximal Extractable Value) **Maximal Extractable Value (MEV)** refers to profits that block producers can generate by reordering, inserting, or censoring transactions before they are finalized on the blockchain. *** ### Miner A **miner** is a participant in a proof-of-work blockchain who uses computational power to validate transactions and create new blocks. *** ### Mixer (Tumbler) A **crypto mixer** is a service that attempts to obscure the origin and destination of digital assets by combining transactions from multiple users. *** ### Multi-Signature Wallet (Multisig) A **multisignature wallet** requires multiple private keys to authorize a transaction, improving security and governance over funds. *** ### Node A **node** is a computer connected to a blockchain network that maintains a copy of the ledger and helps validate and relay transactions. *** ### Off-Chain **Off-chain** refers to activities or transactions that occur outside the blockchain but may interact with it. *** ### On-Chain **On-chain** refers to transactions and data that are recorded directly on the blockchain ledger. *** ### Oracle A **blockchain oracle** provides external data to smart contracts so they can interact with information outside the blockchain. *** ### Private Key A **private key** is a secret cryptographic key that grants control over a blockchain address and the assets associated with it. *** ### Peg / Price Peg A **price peg** is the target value that a pegged asset is designed to maintain, typically \$1.00 for USD-denominated stablecoins. The peg is maintained through various mechanisms including reserves, algorithmic supply adjustments, or arbitrage incentives. *** ### Proof of Reserves **Proof of Reserves (PoR)** is a verification method used by crypto platforms to demonstrate that customer assets are backed by sufficient reserves. *** ### Proof of Stake (PoS) **Proof of Stake** is a consensus mechanism where validators secure the network by locking tokens as collateral and participating in transaction validation. *** ### Proof of Work (PoW) **Proof of Work** is a consensus mechanism where miners solve complex cryptographic puzzles to validate transactions and secure the network. *** ### Public Key A **public key** is a cryptographic key derived from a private key that can be shared publicly to receive digital assets. *** ### Rug Pull A **rug pull** occurs when developers abandon a project and withdraw liquidity or funds, leaving investors with worthless tokens. *** ### Risk Intelligence **Risk intelligence** refers to the collection, analysis, and interpretation of blockchain data to identify potential security, financial, or compliance risks associated with digital assets, transactions, smart contracts, or wallet activity. *** ### Self-Custody **Self-custody** refers to managing one’s own private keys and digital assets without relying on a third-party custodian. *** ### Smart Contract A **smart contract** is software deployed on a blockchain that automatically executes predefined actions when certain conditions are met. *** ### Timelock A **timelock** is a smart contract mechanism that enforces a delay between when an administrative action is proposed and when it can be executed. Timelocks give users time to review and react to governance changes, reducing the risk of malicious upgrades or sudden parameter changes. A 7-day timelock is commonly used in conservative governance setups. *** ### Stablecoin A **stablecoin** is a digital asset designed to maintain a stable value, typically by being pegged to a fiat currency such as the US dollar. *** ### Stablecoin Depeg Risk **Stablecoin depeg risk** refers to the possibility that a stablecoin loses its intended price stability relative to its reference asset, typically a fiat currency such as the US dollar. Depegs may occur due to liquidity shocks, reserve concerns, market stress, or structural vulnerabilities in the asset’s design. *** ### Token A **token** is a digital asset issued on a blockchain that can represent currency, utility, ownership rights, or access to services. *** ### Tokenization **Tokenization** is the process of representing real-world or digital assets as tokens on a blockchain. *** ### Token Risk Analysis **Token risk analysis** is the evaluation of a digital asset’s technical, financial, and behavioral characteristics to identify potential risks. This may include analysis of smart contract code, liquidity conditions, holder concentration, governance controls, and transaction activity. *** ### Total Value Locked (TVL) **Total Value Locked (TVL)** represents the total USD value of assets deposited in a DeFi protocol, vault, or liquidity pool. TVL is a key indicator of protocol adoption and trust. In vault risk assessment, low TVL (under \$50k) indicates higher risk due to less battle-testing and easier price manipulation. *** ### Utilization Rate **Utilization rate** is the percentage of a lending pool's total deposits that are currently borrowed. High utilization (above 95%) means most capital is lent out and depositors may not be able to withdraw. In vault risk assessment, high utilization is a key liquidity signal. *** ### Transaction A **transaction** is a transfer of digital assets or data recorded on a blockchain. *** ### Transaction Simulation **Transaction simulation** is the process of analyzing a blockchain transaction before it is executed to predict its outcome. Simulation can reveal potential risks such as malicious contract behavior, unexpected token transfers, excessive fees, or failed transactions. *** ### Validator A **validator** is a participant in a proof-of-stake blockchain responsible for confirming transactions and maintaining the network. *** ### Wallet A **wallet** is software or hardware used to store cryptographic keys that allow users to manage digital assets on a blockchain. *** ### Wallet Screening **Wallet screening** is the process of evaluating a blockchain address to determine whether it may be associated with illicit activity, sanctioned entities, fraud, or other high-risk behavior based on transaction history and known risk indicators.