# Buy Hodl Sell

> Clear cryptocurrency education, reference material, and live Bitcoin and Bitcoin Cash research tools.

## What the site covers

- **Cryptionary**: searchable cryptocurrency and blockchain definitions
- **Articles**: wallet guides, protocol explainers, and ecosystem updates
- **TX::Watch**: live BTC and BCH transaction flow, fees, and protocol signals
- **TokenWatch**: live CashToken activity with BCMR and on-chain context
- **Upgrade Tracker**: source-linked BCH and BTC upgrade timelines
- **Blockspace Lab**: interactive queue, capacity, fee, and confirmation modeling
- **Support**: public BTC/BCH donation progress and sponsorship information

## Main routes

- [Home](https://buyhodlsell.com)
- [Articles](https://buyhodlsell.com/articles)
- [Article archive](https://buyhodlsell.com/articles/archive)
- [Cryptionary](https://buyhodlsell.com/terminology)
- [Tools](https://buyhodlsell.com/tools)
- [TX::Watch](https://buyhodlsell.com/tx-watch)
- [TokenWatch](https://buyhodlsell.com/token-watch)
- [Upgrade Tracker](https://buyhodlsell.com/upgrade-tracker)
- [Blockspace Lab](https://buyhodlsell.com/blockspace-lab)
- [Donate](https://buyhodlsell.com/donate)
- [Sponsors](https://buyhodlsell.com/sponsors)
- [Contact](https://buyhodlsell.com/contact-us)

## Terminology (344)

- [Account Model](https://buyhodlsell.com/terminology/account-model): A ledger design that records balances, nonces, code, or storage under persistent account identifiers.
- [Adaptive Blocksize Limit Algorithm](https://buyhodlsell.com/terminology/abla): Bitcoin Cash consensus rules that adjust the maximum block size gradually in response to sustained block use.
- [Address](https://buyhodlsell.com/terminology/address): A network-specific identifier that describes a destination or spending condition for a cryptocurrency payment.
- [Air-Gapped Wallet](https://buyhodlsell.com/terminology/air-gapped-wallet): A signing setup designed to keep private keys on a device isolated from ordinary data networks.
- [Airdrop](https://buyhodlsell.com/terminology/airdrop): A distribution of free or claimable tokens to eligible wallets, often used to reward users or bootstrap a network.
- [Algorithmic Stablecoin](https://buyhodlsell.com/terminology/algorithmic-stablecoin): A stablecoin that targets a peg using algorithmic supply rules rather than full collateralization.
- [All Time High](https://buyhodlsell.com/terminology/all-time-high): The highest price a cryptocurrency or traded asset has ever reached, often used as a market cycle benchmark.
- [All Time Low](https://buyhodlsell.com/terminology/all-time-low): The lowest recorded price for a cryptocurrency or traded asset, used to compare drawdowns and market cycles.
- [Altcoin](https://buyhodlsell.com/terminology/altcoin): Any cryptocurrency other than Bitcoin, or more broadly a non-leading coin within a specific market category.
- [Altseason](https://buyhodlsell.com/terminology/altseason): A market phase when many altcoins outperform Bitcoin and attract rising liquidity, attention, and trading volume.
- [AMM](https://buyhodlsell.com/terminology/amm): A decentralized exchange mechanism that prices trades against liquidity pools using smart-contract formulas.
- [Annual Percentage Rate](https://buyhodlsell.com/terminology/apr): The yearly interest rate without accounting for compound interest.
- [Annual Percentage Yield](https://buyhodlsell.com/terminology/apy): The effective annual return after accounting for compounding, commonly used to compare yield products.
- [Anti-Money Laundering](https://buyhodlsell.com/terminology/anti-money-laundering): Laws and processes that aim to prevent illicit funds from being disguised as legitimate.
- [Ape](https://buyhodlsell.com/terminology/ape): Slang for entering a trade or project quickly with high conviction and limited due diligence.
- [Arbitrage](https://buyhodlsell.com/terminology/arbitrage): The practice of exploiting price differences for the same or related assets across markets.
- [ASIC](https://buyhodlsell.com/terminology/asic): Specialized hardware built to perform one algorithm extremely efficiently, commonly used in proof-of-work mining.
- [Asset](https://buyhodlsell.com/terminology/asset): A resource with economic value that can be owned, controlled, or used to provide future benefit.
- [Atomic Swap](https://buyhodlsell.com/terminology/atomic-swap): A trustless exchange of assets across chains using time-locked contracts.
- [Backup](https://buyhodlsell.com/terminology/backup): A redundant copy of critical wallet data (seeds, descriptors, keys) stored to recover funds if a device is lost.
- [Bagholder](https://buyhodlsell.com/terminology/bagholder): An investor who continues holding a cryptocurrency after major losses, often hoping for a future recovery.
- [Batching](https://buyhodlsell.com/terminology/batching): Constructing one transaction with outputs for multiple payments so transaction overhead is shared.
- [Bear Market](https://buyhodlsell.com/terminology/bear-market): A sustained market decline accompanied by broadly negative sentiment and reduced risk appetite.
- [Bearish](https://buyhodlsell.com/terminology/bearish): Negative market sentiment or positioning that expects prices to fall or remain weak.
- [Bech32](https://buyhodlsell.com/terminology/bech32): A checksummed, human-readable encoding used for native SegWit addresses and other data.
- [Bid-Ask Spread](https://buyhodlsell.com/terminology/bid-ask-spread): The difference between the highest bid and lowest ask price for an asset.
- [BIP39 Passphrase](https://buyhodlsell.com/terminology/bip39-passphrase): An optional string combined with a BIP39 mnemonic to derive a different seed and wallet.
- [Bit](https://buyhodlsell.com/terminology/bit): An informal Bitcoin-family denomination equal to one millionth of a coin, or 100 satoshis.
- [Bitcoin](https://buyhodlsell.com/terminology/btc): The first widely adopted cryptocurrency, using proof of work and an issuance schedule capped near 21 million BTC under current rules.
- [Bitcoin Cash](https://buyhodlsell.com/terminology/bch): A proof-of-work cryptocurrency that split from Bitcoin in 2017 and follows a separate on-chain scaling and CashVM roadmap.
- [Bitcoin Cash Metadata Registry](https://buyhodlsell.com/terminology/bcmr): A standard for publishing and authenticating descriptive metadata about Bitcoin Cash tokens, identities, and applications.
- [Bitcoin Improvement Proposal](https://buyhodlsell.com/terminology/bip): A published proposal or information document for Bitcoin protocols, applications, or community processes.
- [Bitcoin Script](https://buyhodlsell.com/terminology/bitcoin-script): The stack-based spending-condition language used by Bitcoin-family transaction outputs.
- [Block](https://buyhodlsell.com/terminology/block): A batch of valid transactions added to a blockchain, linked to the previous block by a cryptographic hash.
- [Block Explorer](https://buyhodlsell.com/terminology/block-explorer): An indexed interface for looking up blocks, transactions, scripts or addresses, and other chain data.
- [Block Height](https://buyhodlsell.com/terminology/block-height): The position of a block in a blockchain, counted from the genesis block at height zero.
- [Block Reward](https://buyhodlsell.com/terminology/block-reward): The subsidy and transaction fees a proof-of-work block is permitted to assign to its miner.
- [Blockchain](https://buyhodlsell.com/terminology/blockchain): A distributed ledger made of cryptographically linked blocks that record transactions under shared consensus rules.
- [Blockspace](https://buyhodlsell.com/terminology/blockspace): The limited transaction-data capacity available in a blockchain's blocks.
- [Bridge](https://buyhodlsell.com/terminology/bridge): Infrastructure that enables moving assets or messages across blockchains.
- [Bug Bounty](https://buyhodlsell.com/terminology/bug-bounty): A program offering rewards to security researchers who responsibly disclose vulnerabilities.
- [Bull Market](https://buyhodlsell.com/terminology/bull-market): A sustained period of broadly rising prices and optimistic market sentiment, without a universal threshold or duration.
- [Bullish](https://buyhodlsell.com/terminology/bullish): Positive market sentiment or positioning that expects prices to rise or fundamentals to improve.
- [Burn](https://buyhodlsell.com/terminology/burn): The permanent removal of coins or tokens from spendable circulation, usually by destroying them or making them unspendable.
- [Buy High Sell Low](https://buyhodlsell.com/terminology/buy-high-sell-low): A losing pattern of buying after prices have already risen and selling after they fall, often due to emotion.
- [Buy Low Sell High](https://buyhodlsell.com/terminology/buy-low-sell-high): A basic trading principle of buying at lower prices and selling at higher prices, easier to state than execute.
- [Buy The Dip](https://buyhodlsell.com/terminology/btd): Buying after a price drop in the hope that the decline is temporary and the asset will recover.
- [Canonical Transaction Ordering](https://buyhodlsell.com/terminology/ctor): A Bitcoin Cash rule that orders transactions in a block by transaction ID rather than dependency order.
- [Cash Improvement Proposal](https://buyhodlsell.com/terminology/cash-improvement-proposal): A public technical proposal used to specify and evaluate changes or shared standards in the Bitcoin Cash ecosystem.
- [CashAddr](https://buyhodlsell.com/terminology/cashaddr): A Bitcoin Cash address format with a network prefix, Base32 payload, type information, and error-detecting checksum.
- [CashFusion](https://buyhodlsell.com/terminology/cashfusion): An opt-in Bitcoin Cash CoinJoin protocol that combines many inputs and differently sized outputs to complicate transaction-link analysis.
- [CashScript](https://buyhodlsell.com/terminology/cashscript): A high-level language, compiler, and TypeScript SDK for building Bitcoin Cash UTXO contracts.
- [CashShuffle](https://buyhodlsell.com/terminology/cashshuffle): A legacy Bitcoin Cash CoinJoin protocol that coordinated equal-denomination outputs to weaken input-output ownership links.
- [CashTokens](https://buyhodlsell.com/terminology/cashtokens): Native Bitcoin Cash primitives for fungible tokens and non-fungible tokens attached to UTXOs.
- [CashVM](https://buyhodlsell.com/terminology/cashvm): An ecosystem name for the stack-based virtual machine that evaluates Bitcoin Cash spending bytecode.
- [Centralized Exchange](https://buyhodlsell.com/terminology/centralized-exchange): A custodial platform that matches orders and holds user funds.
- [Chain Reorganization](https://buyhodlsell.com/terminology/chain-reorg): A network event where the active chain tip switches to a different branch with more accumulated work.
- [Chain Split](https://buyhodlsell.com/terminology/chain-split): A divergence in which nodes accept competing block histories; it may resolve by reorganization or persist as separate networks.
- [Checksum](https://buyhodlsell.com/terminology/checksum): Data derived from a message to detect accidental corruption or transcription errors.
- [CheckTemplateVerify](https://buyhodlsell.com/terminology/checktemplateverify): A proposed Bitcoin covenant opcode that would require a spending transaction to match a committed template.
- [Chipnet](https://buyhodlsell.com/terminology/chipnet): A public Bitcoin Cash test network that activates candidate upgrade rules before the corresponding mainnet date.
- [Circulating Supply](https://buyhodlsell.com/terminology/circulating-supply): The estimated number of coins or tokens currently available to the market, excluding locked or unissued supply.
- [Coin Age](https://buyhodlsell.com/terminology/coin-age): The time since a UTXO was created; used in analysis, privacy, and some staking systems.
- [Coin Control](https://buyhodlsell.com/terminology/coin-control): Manual selection of specific UTXOs when creating a transaction.
- [Coin Selection](https://buyhodlsell.com/terminology/coin-selection): The algorithm a wallet uses to choose which UTXOs to spend, impacting fees, privacy, and change.
- [Coinbase Transaction](https://buyhodlsell.com/terminology/coinbase-transaction): The first transaction in a block, used to assign the block subsidy and collected transaction fees.
- [CoinJoin](https://buyhodlsell.com/terminology/coinjoin): A privacy technique that combines multiple users’ inputs and outputs in a single transaction.
- [Cold Storage](https://buyhodlsell.com/terminology/cold-storage): A custody arrangement that keeps signing keys unavailable to ordinary internet-connected systems.
- [Collateral](https://buyhodlsell.com/terminology/collateral): Assets pledged to secure a crypto loan, margin position, or smart contract obligation until repayment.
- [Composability](https://buyhodlsell.com/terminology/composability): The ability of applications and protocols to combine compatible interfaces and state into larger workflows.
- [Confirmations](https://buyhodlsell.com/terminology/confirmations): The count of blocks confirming a transaction, usually including the block that first contains it.
- [Consensus](https://buyhodlsell.com/terminology/consensus): The process by which blockchain participants agree on valid transactions, blocks, and ledger history.
- [Covenant](https://buyhodlsell.com/terminology/covenant): A UTXO spending condition that restricts properties of the transaction or outputs created when it is spent.
- [CPFP](https://buyhodlsell.com/terminology/cpfp): A fee-bumping technique where a high-fee child spends an unconfirmed output so miners can evaluate parent and child fees together.
- [Cryptocurrency Exchange](https://buyhodlsell.com/terminology/exchange): A cryptocurrency exchange is a platform for buying, selling, or trading digital assets through crypto or fiat markets.
- [Custodial Wallet](https://buyhodlsell.com/terminology/custodial-wallet): A wallet where a third party controls the private keys on your behalf.
- [DAO](https://buyhodlsell.com/terminology/dao): A DAO is an on-chain organization where members coordinate proposals, treasury actions, and rules through transparent governance processes.
- [Dead Cat Bounce](https://buyhodlsell.com/terminology/dead-cat-bounce): A dead cat bounce is a brief price rebound during a larger downtrend that later fails and resumes the decline.
- [Death Spiral](https://buyhodlsell.com/terminology/death-spiral): A death spiral is a severe proof-of-work feedback loop where falling hash rate slows blocks, weakens confidence, and drives more miners away.
- [Decentralization](https://buyhodlsell.com/terminology/decentralization): Decentralization distributes control across many participants, reducing single points of failure, censorship, or unilateral rule changes.
- [Decentralized Application](https://buyhodlsell.com/terminology/dapp): A decentralized application (DApp) uses smart contracts or decentralized networks to provide app logic without a single operator controlling the backend.
- [Decentralized Exchange](https://buyhodlsell.com/terminology/dex): A decentralized exchange (DEX) lets users trade digital assets from their wallets through smart contracts or peer-to-peer settlement.
- [DeFi](https://buyhodlsell.com/terminology/defi): DeFi uses smart contracts to provide permissionless financial services such as trading, lending, borrowing, and asset issuance.
- [Delegated Proof of Stake](https://buyhodlsell.com/terminology/dpos): Delegated Proof of Stake lets token holders vote for a limited validator set that produces blocks for the network.
- [Depeg](https://buyhodlsell.com/terminology/depeg): A depeg occurs when a pegged asset such as a stablecoin trades materially away from its intended reference price.
- [Derivation Path](https://buyhodlsell.com/terminology/derivation-path): A notation that selects a branch and key within a hierarchical deterministic wallet.
- [Deterministic Wallet](https://buyhodlsell.com/terminology/deterministic-wallet): A wallet that derives all keys and addresses from a single seed phrase, enabling easy backup and recovery.
- [Diamond Hands](https://buyhodlsell.com/terminology/diamond-hands): Diamond hands means holding an asset through volatility or pressure to sell, usually as a meme about conviction and risk tolerance.
- [Difficulty Adjustment Algorithm](https://buyhodlsell.com/terminology/difficulty-adjustment-algorithm): A DAA is the consensus rule that recalibrates mining difficulty so average block time stays near target as hash rate changes.
- [Distributed Ledger](https://buyhodlsell.com/terminology/distributed-ledger): A distributed ledger is a replicated record shared across many nodes, keeping participants synchronized on transactions or state.
- [Dollar Cost Averaging](https://buyhodlsell.com/terminology/dollar-cost-averaging): Dollar cost averaging buys a fixed amount at regular intervals to reduce timing risk and smooth entry prices over time.
- [Double Spend](https://buyhodlsell.com/terminology/double-spend): A double spend is an attempt to spend the same coins twice by getting one conflicting transaction accepted over another.
- [Dump](https://buyhodlsell.com/terminology/dump): A dump is a rapid wave of selling that pushes an asset's price lower, often driven by panic, profit-taking, or manipulation.
- [Dust](https://buyhodlsell.com/terminology/dust): Dust is a tiny coin or token balance that is uneconomical to spend because fees or policy rules outweigh its value.
- [Dust Limit](https://buyhodlsell.com/terminology/dust-limit): The minimum output value a node or miner relays because smaller outputs cost more to spend than they are worth.
- [Dusting Attack](https://buyhodlsell.com/terminology/dusting-attack): A dusting attack sends tiny coin amounts to many addresses, hoping later spending patterns reveal which addresses share an owner.
- [DYOR](https://buyhodlsell.com/terminology/dyor): DYOR means independently checking claims, risks, and incentives before investing in or relying on a crypto project.
- [Emission Schedule](https://buyhodlsell.com/terminology/emission-schedule): An emission schedule defines when and how quickly new coins or tokens enter circulation.
- [Entropy](https://buyhodlsell.com/terminology/entropy): Entropy is the randomness used to generate secure wallet seeds, private keys, and nonces in cryptographic systems.
- [ERC-20 Token](https://buyhodlsell.com/terminology/erc20-token): ERC-20 is Ethereum's common fungible token standard, defining transfers, balances, approvals, and supply queries.
- [ERC-721 Token](https://buyhodlsell.com/terminology/erc721-token): ERC-721 is Ethereum's standard for non-fungible tokens, where each token ID represents a unique asset.
- [Escrow](https://buyhodlsell.com/terminology/escrow): Escrow holds funds until agreed conditions are met, using a trusted custodian, multisig, or smart contract logic.
- [Ethash](https://buyhodlsell.com/terminology/ethash): Ethash was Ethereum's memory-hard proof-of-work mining algorithm before The Merge; some Ethereum-family chains still use variants.
- [Ethereum](https://buyhodlsell.com/terminology/eth): Ethereum is a proof-of-stake smart contract blockchain; ETH is its native asset used for gas, staking, and settlement.
- [Ethereum Improvement Proposal](https://buyhodlsell.com/terminology/eip): An EIP is the formal proposal process for Ethereum protocol changes, interfaces, and application standards.
- [Ethereum Virtual Machine](https://buyhodlsell.com/terminology/evm): The EVM is the deterministic runtime that executes smart contract bytecode on Ethereum and EVM-compatible networks.
- [Exchange Token](https://buyhodlsell.com/terminology/exchange-token): An exchange token is issued by a trading platform to offer benefits such as fee discounts, rewards, access, or governance.
- [Exit Liquidity](https://buyhodlsell.com/terminology/exit-liquidity): Exit liquidity refers to late buyers whose demand lets earlier holders sell into a rally, often after hype or promotion.
- [Extended Private Key](https://buyhodlsell.com/terminology/xprv): A BIP32 extended private key that can derive child private keys for a whole wallet branch.
- [Extended Public Key](https://buyhodlsell.com/terminology/xpub): A BIP32 extended public key that derives many child public keys and addresses without revealing private keys.
- [Extended Public Key](https://buyhodlsell.com/terminology/ypub): A wallet-specific extended public key prefix that signals a nested SegWit address type to compatible software.
- [Externally Owned Account](https://buyhodlsell.com/terminology/eoa): An EOA is an Ethereum account controlled by a private key, used to sign transactions and hold ETH or tokens.
- [Fair Launch](https://buyhodlsell.com/terminology/fair-launch): A contested distribution label for projects that claim to avoid privileged pre-launch allocations or access.
- [Faucet](https://buyhodlsell.com/terminology/faucet): A crypto faucet gives out small amounts of coins or tokens so users can try wallets, transactions, or a new network.
- [Fee](https://buyhodlsell.com/terminology/fee): Value paid under network rules or policy to submit, execute, relay, or include a blockchain transaction.
- [Fee Market](https://buyhodlsell.com/terminology/fee-market): The rules and user demand that determine the price of scarce transaction inclusion or execution capacity.
- [Fee Rate](https://buyhodlsell.com/terminology/fee-rate): Transaction fee per unit of size: commonly sat/vB for Bitcoin or sat/byte for Bitcoin Cash. It helps explain miner selection, not a guaranteed wait.
- [Fiat Currency](https://buyhodlsell.com/terminology/fiat): Fiat currency is government-issued money that is legal tender and not directly backed by a commodity like gold.
- [Finality](https://buyhodlsell.com/terminology/finality): The rules or confidence used to judge whether a confirmed transaction can still be reversed.
- [Flash Loan](https://buyhodlsell.com/terminology/flash-loan): A flash loan is an uncollateralized DeFi loan that must be borrowed and repaid within the same transaction.
- [Flippening](https://buyhodlsell.com/terminology/flippening): The flippening is a hypothetical event where another cryptocurrency surpasses Bitcoin by market capitalization.
- [FOMO](https://buyhodlsell.com/terminology/fomo): FOMO is the fear of missing out on gains, often causing impulsive buying during fast price moves or social hype.
- [Fork](https://buyhodlsell.com/terminology/fork): A fork is a blockchain divergence caused by competing blocks, software changes, or incompatible consensus rules.
- [Front-Running](https://buyhodlsell.com/terminology/front-running): Front-running means acting on knowledge of a pending trade or transaction to execute first and capture an advantage.
- [FUD](https://buyhodlsell.com/terminology/fud): FUD means fear, uncertainty, and doubt spread through negative, exaggerated, or misleading claims.
- [Full Node](https://buyhodlsell.com/terminology/full-node): Software that independently validates blocks and transactions against a network's consensus rules.
- [Funding Rate](https://buyhodlsell.com/terminology/funding-rate): A funding rate is the periodic payment between long and short perpetual futures positions that helps anchor price to spot.
- [Fungible Token](https://buyhodlsell.com/terminology/fungible-token): A fungible token has interchangeable units, so each unit of the same token is equivalent for payment, accounting, or trading.
- [Futures](https://buyhodlsell.com/terminology/futures): Futures are derivatives for long or short exposure to an asset; crypto markets commonly use perpetual futures with no expiry.
- [Gas](https://buyhodlsell.com/terminology/gas): The metered unit of computational work on EVM chains, paid in the native token to run transfers and smart contracts.
- [Gas Limit](https://buyhodlsell.com/terminology/gas-limit): A cap on the gas a transaction or block may consume on EVM chains, limiting execution cost and network load.
- [Gas Price](https://buyhodlsell.com/terminology/gas-price): The fee rate paid per unit of gas on EVM chains, usually quoted in gwei and used to price transaction execution.
- [Genesis Block](https://buyhodlsell.com/terminology/genesis-block): The first block in a blockchain, hardcoded as the starting point for all later blocks and the ledger's initial state.
- [Governance](https://buyhodlsell.com/terminology/governance): The processes a blockchain community or protocol uses to propose, decide, and implement changes.
- [Governance Token](https://buyhodlsell.com/terminology/governance-token): A token that grants proposal, voting, or delegation rights in a protocol's governance process.
- [Gwei](https://buyhodlsell.com/terminology/gwei): An ETH denomination equal to one billion wei, commonly used to quote gas fee rates on Ethereum-like chains.
- [Halving](https://buyhodlsell.com/terminology/halving): A scheduled reduction in block subsidy that cuts new coin issuance, often by half, at predetermined block heights.
- [Hard cap](https://buyhodlsell.com/terminology/hard-cap): The maximum supply a cryptocurrency protocol permits, enforced by consensus rules or token contract logic.
- [Hardware wallet](https://buyhodlsell.com/terminology/hardware-wallet): A physical signing device that keeps private keys isolated while approving cryptocurrency transactions.
- [Hash](https://buyhodlsell.com/terminology/hash): A fixed-size digest produced by a one-way function, used for data integrity, identifiers, signatures, and proof-of-work.
- [Hash rate](https://buyhodlsell.com/terminology/hash-rate): The number of proof-of-work hash attempts performed per second by mining hardware or an entire network.
- [Hash Time-Locked Contract](https://buyhodlsell.com/terminology/htlc): A conditional payment that can be claimed with a secret before a deadline or refunded after the deadline.
- [Hodl](https://buyhodlsell.com/terminology/hodl): Crypto slang for holding an asset through volatility instead of reacting to short-term market moves.
- [Hot wallet](https://buyhodlsell.com/terminology/hot-wallet): An internet-connected wallet used for convenient spending or dApp access, with higher exposure to online threats.
- [Hyperinflation](https://buyhodlsell.com/terminology/hyperinflation): Extremely rapid inflation in which a currency loses purchasing power quickly and public confidence breaks down.
- [ICO](https://buyhodlsell.com/terminology/ico): A token-based fundraising sale where a project sells new coins or tokens, often before the product is fully launched.
- [IEO](https://buyhodlsell.com/terminology/ieo): A token sale administered through a cryptocurrency exchange, combining fundraising with exchange-led onboarding and listing support.
- [Immutability](https://buyhodlsell.com/terminology/immutability): The practical resistance of confirmed blockchain history to alteration, created by consensus, replication, and economic cost.
- [Impermanent loss](https://buyhodlsell.com/terminology/impermanent-loss): The underperformance an AMM liquidity provider can face versus simply holding the deposited assets when prices diverge.
- [Indexer](https://buyhodlsell.com/terminology/indexer): Software that parses blockchain data into queryable databases so wallets, explorers, and apps can retrieve information quickly.
- [Inflation](https://buyhodlsell.com/terminology/inflation): A sustained rise in the general price level, reducing a currency's purchasing power over time.
- [Instamine](https://buyhodlsell.com/terminology/instamine): A launch pattern where an unusually large share of supply is mined very early, raising fairness and concentration concerns.
- [Interoperability](https://buyhodlsell.com/terminology/interoperability): The ability of blockchains, wallets, and applications to exchange assets, messages, or data across different systems.
- [IPFS](https://buyhodlsell.com/terminology/ipfs): A peer-to-peer file network that retrieves content by cryptographic identifier rather than by a server location.
- [J-curve](https://buyhodlsell.com/terminology/j-curve): A pattern where early results decline or lag before improving sharply, often discussed in startups and token economies.
- [JIT liquidity](https://buyhodlsell.com/terminology/jit-liquidity): A strategy that adds AMM liquidity just before a trade and removes it shortly after to capture fees with limited exposure.
- [JoinMarket](https://buyhodlsell.com/terminology/joinmarket): A non-custodial CoinJoin system for Bitcoin where makers and takers collaborate to improve transaction privacy.
- [JOMO](https://buyhodlsell.com/terminology/jomo): Joy of Missing Out is relief or satisfaction from avoiding a hyped trade that does not fit your risk plan.
- [JSON-RPC](https://buyhodlsell.com/terminology/json-rpc): A lightweight request-response protocol many blockchain nodes use for transaction broadcast and chain queries.
- [Jurisdictional arbitrage](https://buyhodlsell.com/terminology/jurisdictional-arbitrage): Choosing a legal or regulatory environment that better fits a crypto business, protocol, or personal activity.
- [Keccak-256](https://buyhodlsell.com/terminology/keccak-256): A 256-bit Keccak hash function used in Ethereum for addresses, function selectors, event topics, and tooling.
- [Key pair](https://buyhodlsell.com/terminology/key-pair): A matched private key and public key used to prove control, verify signatures, and derive cryptocurrency addresses.
- [Keystore](https://buyhodlsell.com/terminology/keystore): An encrypted wallet file that stores private keys or seed material, usually protected by a user password.
- [Kimchi premium](https://buyhodlsell.com/terminology/kimchi-premium): A regional crypto price premium where assets trade higher on South Korean exchanges than on global markets.
- [Know Your Customer](https://buyhodlsell.com/terminology/know-your-customer): Compliance procedures that verify customer identity and risk before providing regulated financial or crypto services.
- [KYT](https://buyhodlsell.com/terminology/kyt): Know Your Transaction is transaction monitoring that assesses crypto activity for sanctions, fraud, and AML risk.
- [Lambo](https://buyhodlsell.com/terminology/lambo): Crypto slang for wealth fantasies and speculative hype, symbolized by asking when profits will buy a Lamborghini.
- [Layer-1](https://buyhodlsell.com/terminology/layer-1): The base blockchain layer that defines consensus, transaction validity, settlement, and data availability.
- [Layer-2](https://buyhodlsell.com/terminology/layer-2): A protocol built around a Layer-1 to move activity off the base chain while relying on it for settlement or security.
- [Leverage](https://buyhodlsell.com/terminology/leverage): Borrowed or synthetic exposure that increases position size, amplifying both gains and losses.
- [Lightning Network](https://buyhodlsell.com/terminology/lightning-network): A Bitcoin payment-channel network that routes off-chain balance updates and settles channel state on-chain.
- [Limit Order](https://buyhodlsell.com/terminology/limit-order): An order to buy or sell an asset at a specified price or better, without guaranteeing execution.
- [Liquidation](https://buyhodlsell.com/terminology/liquidation): The forced closure of a leveraged position when collateral falls below required margin.
- [Liquidity](https://buyhodlsell.com/terminology/liquidity): How easily an asset can be bought or sold in size without causing a large price move.
- [Liquidity mining](https://buyhodlsell.com/terminology/liquidity-mining): Token rewards paid to users who supply liquidity to pools or protocols, usually to bootstrap market depth and usage.
- [Liquidity pool](https://buyhodlsell.com/terminology/liquidity-pool): A smart contract reserve of assets that enables AMM trading, lending, or swaps without a traditional order book.
- [Locktime](https://buyhodlsell.com/terminology/locktime): A transaction field or script condition that delays when a transaction or spending path becomes eligible for inclusion.
- [Mainnet](https://buyhodlsell.com/terminology/mainnet): Mainnet is the live, production blockchain where real-value transactions occur, as opposed to test networks.
- [Majority Attack](https://buyhodlsell.com/terminology/majority-attack): A proof-of-work attack in which coordinated hash power can outpace the honest chain and reorganize recent valid history.
- [Maker vs. Taker Fees](https://buyhodlsell.com/terminology/maker-taker-fees): Learn when maker or taker fees apply, why a limit order can pay both, and how to calculate trading fees with a worked example.
- [Market Capitalization](https://buyhodlsell.com/terminology/market-cap): A sizing estimate calculated by multiplying an asset's reference price by its reported circulating supply.
- [Market maker](https://buyhodlsell.com/terminology/market-maker): A market maker quotes buy and sell prices to provide liquidity, earning the spread and/or incentives.
- [Market Manipulation](https://buyhodlsell.com/terminology/market-manipulation): Deliberate conduct that distorts or misrepresents genuine supply, demand, price, or trading activity.
- [Market Order](https://buyhodlsell.com/terminology/market-order): An instruction to trade immediately against available orders, prioritizing execution over a guaranteed price.
- [Masternode](https://buyhodlsell.com/terminology/masternode): A chain-specific service-node role that usually requires collateral and performs duties beyond ordinary block validation or relay.
- [Maximalist](https://buyhodlsell.com/terminology/maximalist): A person who treats one cryptocurrency or protocol as uniquely legitimate or overwhelmingly preferable to alternatives.
- [Maximum Supply](https://buyhodlsell.com/terminology/maximum-supply): The upper bound on asset issuance under a cryptocurrency's current protocol rules.
- [Median Time Past](https://buyhodlsell.com/terminology/median-time-past): A consensus time value calculated from the median timestamp of the most recent 11 blocks.
- [Mempool](https://buyhodlsell.com/terminology/mempool): A node's local set of unconfirmed transactions accepted for possible relay and block inclusion.
- [Mempool Pinning](https://buyhodlsell.com/terminology/mempool-pinning): A tactic that makes an unconfirmed transaction difficult to replace or fee-bump, delaying confirmation.
- [Merkle tree](https://buyhodlsell.com/terminology/merkle-tree): A Merkle tree is a binary tree of hashes that enables efficient verification of large data sets, used in blockchains for transaction inclusion proofs.
- [MEV](https://buyhodlsell.com/terminology/mev): MEV is the value that block producers or transaction sequencers can extract by reordering, inserting, or censoring transactions.
- [Microtransaction](https://buyhodlsell.com/terminology/microtransaction): A payment small enough that fees, minimum-output rules, and interaction overhead materially affect whether it is practical.
- [Miner](https://buyhodlsell.com/terminology/miner): A proof-of-work participant that builds or searches candidate blocks and earns revenue when an accepted block is found.
- [Mining](https://buyhodlsell.com/terminology/mining): Proof-of-work block production in which miners build candidate blocks and search for a header hash below the network target.
- [Mining Difficulty](https://buyhodlsell.com/terminology/difficulty): Mining difficulty measures how hard it is to find a valid proof-of-work block and adjusts to keep average block times near target.
- [Mining Pool](https://buyhodlsell.com/terminology/mining-pool): A service that coordinates proof-of-work from many hashers and distributes rewards under a payout scheme.
- [Miniscript](https://buyhodlsell.com/terminology/miniscript): A structured language for expressing Bitcoin script spending policies that are easier to analyze, compose, and secure.
- [Minting Baton](https://buyhodlsell.com/terminology/minting-baton): In SLP, a special token output that authorizes additional issuance for one token ID.
- [Mnemonic](https://buyhodlsell.com/terminology/mnemonic): A human-readable word sequence used by many wallets to reproduce a seed and derive keys.
- [Mooning](https://buyhodlsell.com/terminology/mooning): Crypto-market slang for a rapid price rise—or the hope of one—with no fixed threshold.
- [Multi-Signature](https://buyhodlsell.com/terminology/multi-sig): A spending policy that requires a defined threshold of several keys or signers.
- [Nakamoto Consensus](https://buyhodlsell.com/terminology/nakamoto-consensus): Probabilistic consensus in which nodes validate rules and prefer the valid chain with the most accumulated proof of work.
- [Native Asset](https://buyhodlsell.com/terminology/native-asset): The primary built-in currency of a blockchain used for fees, incentives, and security.
- [Network Effects](https://buyhodlsell.com/terminology/network-effects): Network effects occur when a product or protocol becomes more useful as more people, services, or liquidity connect to it.
- [Node](https://buyhodlsell.com/terminology/node): Software that participates in a peer-to-peer network by validating, serving, relaying, or requesting blockchain data.
- [Non-Custodial Wallet](https://buyhodlsell.com/terminology/non-custodial-wallet): A wallet in which the user controls the signing keys or authorization needed to move funds.
- [Non-Fungible Token](https://buyhodlsell.com/terminology/non-fungible-token): A token unit whose identifier, commitment, or contract state makes it distinguishable from other units.
- [Nonce](https://buyhodlsell.com/terminology/nonce): A nonce is a value miners vary in a block header while searching for a hash that satisfies proof-of-work difficulty.
- [Not Your Keys, Not Your Coins](https://buyhodlsell.com/terminology/not-your-keys-not-your-coins): A custody-risk slogan warning that a service controlling the signing keys can restrict or lose a user's funds.
- [Off-chain](https://buyhodlsell.com/terminology/off-chain): Activity that occurs outside the base blockchain, often for speed, privacy, or cost efficiency.
- [Offline Signing](https://buyhodlsell.com/terminology/offline-signing): Preparing a transaction on a connected device and authorizing it with keys kept on a separate offline signer.
- [On-Chain](https://buyhodlsell.com/terminology/on-chain): Recorded or executed directly in transactions governed by a blockchain's base-layer rules.
- [OP_RETURN](https://buyhodlsell.com/terminology/op-return): A script opcode commonly used to create a provably unspendable output carrying a limited data payload.
- [Opcode](https://buyhodlsell.com/terminology/opcode): An encoded instruction interpreted by a virtual machine or transaction script engine.
- [Open Interest](https://buyhodlsell.com/terminology/open-interest): Open interest is the total number of active derivative contracts that have not yet been closed or settled.
- [Opt-in RBF](https://buyhodlsell.com/terminology/opt-in-rbf): BIP125 signaling that marks an unconfirmed Bitcoin transaction as replaceable under opt-in relay policy.
- [Options](https://buyhodlsell.com/terminology/options): Derivatives granting the right, not the obligation, to buy (call) or sell (put) an asset at a specified strike price by a certain date.
- [Oracle](https://buyhodlsell.com/terminology/oracle): A system that supplies on-chain smart contracts with trustworthy off-chain data.
- [Order Book](https://buyhodlsell.com/terminology/order-book): A real-time list of buy and sell orders organized by price level on an exchange.
- [Ordinals](https://buyhodlsell.com/terminology/ordinals): Ordinals assign serial numbers to satoshis and use inscriptions to associate on-chain data with specific sats.
- [Orphan Block](https://buyhodlsell.com/terminology/orphan): A block that cannot currently extend a node's active chain, often because its parent is unknown or a competing branch lost the proof-of-work race.
- [Output](https://buyhodlsell.com/terminology/output): A spendable unit of cryptocurrency created by transactions; referenced as an input when later spent.
- [Output Descriptor](https://buyhodlsell.com/terminology/output-descriptor): A text representation that describes how to derive addresses and spend policies for a set of keys.
- [Over-the-counter](https://buyhodlsell.com/terminology/over-the-counter): Trades conducted directly between parties rather than through a public order-book exchange.
- [P2PK](https://buyhodlsell.com/terminology/p2pk): Pay-to-Public-Key — an early Bitcoin output type that locks coins directly to a public key.
- [P2PKH](https://buyhodlsell.com/terminology/p2pkh): A common script type where the output can be spent by proving knowledge of the private key corresponding to a hashed public key.
- [P2SH](https://buyhodlsell.com/terminology/p2sh): A script type where the output is locked to the hash of a redeem script, enabling features like multi-sig.
- [P2TR](https://buyhodlsell.com/terminology/p2tr): P2TR is Bitcoin's Taproot output type, committing to a public key and optional hidden script tree.
- [Package Relay](https://buyhodlsell.com/terminology/package-relay): The ability for nodes to relay groups of related transactions together so miners evaluate fees on the package total.
- [Paper Wallet](https://buyhodlsell.com/terminology/paper-wallet): A printed or handwritten record of a private key, seed phrase, or address, often used in older offline-storage workflows.
- [Pay to Script](https://buyhodlsell.com/terminology/pay-to-script): Bitcoin Cash relay policy that permits compact, directly encoded locking scripts without wrapping them in P2SH.
- [Pay to Script Hash 32](https://buyhodlsell.com/terminology/p2sh32): A Bitcoin Cash output pattern that commits to a redeem script with a 32-byte SHA-256 hash.
- [Payment Channel](https://buyhodlsell.com/terminology/payment-channel): A protocol that locks funds on-chain while participants exchange authorized balance updates off-chain before final settlement.
- [Peer-to-peer](https://buyhodlsell.com/terminology/peer-to-peer): A network model where participants interact directly without central intermediaries.
- [Permissionless](https://buyhodlsell.com/terminology/permissionless): Usable under public protocol rules without an operator granting each participant an account or approval.
- [Perpetual Swap](https://buyhodlsell.com/terminology/perpetual-swap): A derivative similar to a futures contract but without expiry, kept near spot via funding payments.
- [Premine](https://buyhodlsell.com/terminology/premine): Coins or tokens created or allocated before a network's public production or distribution begins.
- [Price Discovery](https://buyhodlsell.com/terminology/price-discovery): The process by which markets determine an asset’s price through supply, demand, and information flow.
- [Privacy](https://buyhodlsell.com/terminology/privacy): The ability to transact without revealing sensitive information about identity, balances, or counterparties.
- [Privacy Coin](https://buyhodlsell.com/terminology/privacy-coins): A cryptocurrency designed to reduce public visibility of transaction participants, amounts, or balances.
- [Private Key](https://buyhodlsell.com/terminology/private-key): Secret cryptographic material used to produce signatures or other authorization proofs.
- [Proof of Stake](https://buyhodlsell.com/terminology/proof-of-stake): A family of consensus mechanisms in which validators commit stake to propose, attest to, and finalize blocks.
- [Proof of Work](https://buyhodlsell.com/terminology/proof-of-work): A consensus mechanism that makes block production require verifiable computational work.
- [Protocol](https://buyhodlsell.com/terminology/protocol): The formal set of rules that define how participants in a network communicate and reach consensus.
- [Protocol Upgrade](https://buyhodlsell.com/terminology/protocol-upgrade): A coordinated change to the rules, messages, or policies implemented by network software.
- [PSBT](https://buyhodlsell.com/terminology/psbt): A standard format for exchanging unsigned or partially-signed transactions between wallets and signers.
- [Public Key](https://buyhodlsell.com/terminology/public-key): Cryptographic data used to verify signatures made by the corresponding private key.
- [Pump and Dump](https://buyhodlsell.com/terminology/pump-and-dump): A deceptive scheme in which promoters drive buying and then sell into the demand they created.
- [QR Code](https://buyhodlsell.com/terminology/qr-code): A machine-readable square barcode commonly used to share wallet addresses and payment requests.
- [Quadratic Funding](https://buyhodlsell.com/terminology/quadratic-funding): A matching mechanism that amplifies broad community support by weighting many small contributions more than a few large ones.
- [Quantitative Easing](https://buyhodlsell.com/terminology/quantitative-easing): A monetary policy where central banks create money to purchase assets, increasing liquidity and lowering interest rates.
- [Quantitative Tightening](https://buyhodlsell.com/terminology/quantitative-tightening): A monetary policy where central banks reduce asset holdings or drain reserves to tighten financial liquidity.
- [Quantum Resistance](https://buyhodlsell.com/terminology/quantum-resistance): The ability of cryptographic systems to remain secure against attacks by quantum computers.
- [Quorum](https://buyhodlsell.com/terminology/quorum): The minimum number of participants required to make a decision or validate an action.
- [Quote Currency](https://buyhodlsell.com/terminology/quote-currency): The second asset in a trading pair, used to quote the price of the base asset and measure trade value.
- [Ransomware](https://buyhodlsell.com/terminology/ransomware): Malware that encrypts a victim’s data and demands payment—often in cryptocurrency—for decryption.
- [Redeem Script](https://buyhodlsell.com/terminology/redeem-script): The script that defines spending conditions for a P2SH output; revealed and executed when the coins are spent.
- [Rekt](https://buyhodlsell.com/terminology/rekt): Slang for suffering heavy losses, often quickly, due to volatility, leverage, or liquidations.
- [Replace By Fee](https://buyhodlsell.com/terminology/replace-by-fee): A mempool policy that can accept a conflicting unconfirmed transaction when the replacement satisfies fee and relay rules.
- [Replay Attack](https://buyhodlsell.com/terminology/replay-attack): When a valid transaction from one chain is maliciously or accidentally broadcast and accepted on another chain after a fork.
- [Replay Protection](https://buyhodlsell.com/terminology/replay-protection): Consensus or wallet techniques that stop or reduce unintended reuse of the same signed transaction across split chains.
- [Return on Investment](https://buyhodlsell.com/terminology/roi): A measure of profitability calculated as net gain divided by initial cost, often expressed as a percentage.
- [Ring Signature](https://buyhodlsell.com/terminology/ring-signature): A signature scheme that hides the true signer among a group, providing signer ambiguity.
- [Rollup](https://buyhodlsell.com/terminology/rollup): A Layer-2 technique that executes transactions off-chain and posts compressed proofs or data to the base chain.
- [Rug Pull](https://buyhodlsell.com/terminology/rug-pull): When project insiders drain liquidity or abandon a token, leaving holders with near-worthless assets.
- [Satoshi Nakamoto](https://buyhodlsell.com/terminology/satoshi-nakamoto): The pseudonymous creator of Bitcoin, author of its white paper, and early maintainer of the software.
- [Satoshis](https://buyhodlsell.com/terminology/satoshis): The smallest standard unit of Bitcoin or Bitcoin Cash, equal to one hundred millionth of a coin.
- [Scalability Trilemma](https://buyhodlsell.com/terminology/trilemma): The idea that blockchains face trade-offs among decentralization, security, and scalability when designing consensus and capacity.
- [Schnorr Signatures](https://buyhodlsell.com/terminology/schnorr-signatures): A digital signature scheme with linear properties that can improve verification, multi-signature design, and privacy.
- [Seed Phrase](https://buyhodlsell.com/terminology/seed-phrase): A human-readable backup that can recreate a wallet’s private keys, addresses, and spend authority.
- [SegWit](https://buyhodlsell.com/terminology/segwit): A Bitcoin upgrade that moved signatures into witness data, fixing third-party malleability and changing block capacity.
- [Self-Custody](https://buyhodlsell.com/terminology/self-custody): Holding and securing your own private keys instead of relying on an exchange, custodian, or broker.
- [SHA-256](https://buyhodlsell.com/terminology/sha-256): A 256-bit cryptographic hash function used for transaction IDs, Merkle trees, and proof of work.
- [Shamir's Secret Sharing](https://buyhodlsell.com/terminology/shamirs-secret-sharing): A cryptographic method to split a secret into multiple shares so any threshold subset can reconstruct it.
- [Shill](https://buyhodlsell.com/terminology/shill): A person or action promoting a specific cryptocurrency, often for personal gain.
- [Shitcoin](https://buyhodlsell.com/terminology/shitcoin): A derogatory label for a cryptocurrency viewed as low-quality, scammy, unserious, or lacking durable utility.
- [Sidechain](https://buyhodlsell.com/terminology/sidechain): An independent blockchain that runs in parallel to a main chain and is linked via a bridge or pegging mechanism.
- [Sighash](https://buyhodlsell.com/terminology/sighash): Signature-hash flags that define which transaction parts a signature commits to in Bitcoin-style scripts.
- [Signature](https://buyhodlsell.com/terminology/signature): A cryptographic proof that a message was authorized by the holder of a private key.
- [Simple Ledger Protocol](https://buyhodlsell.com/terminology/simple-ledger-protocol): An application-layer Bitcoin Cash token protocol that records token instructions in OP_RETURN data.
- [Simplified Payment Verification](https://buyhodlsell.com/terminology/spv): A lightweight verification method that checks block headers and Merkle proofs without downloading full blocks.
- [Slippage](https://buyhodlsell.com/terminology/slippage): The difference between the expected trade price and the actual execution price after liquidity and timing effects.
- [Smart Contract](https://buyhodlsell.com/terminology/smart-contract): Blockchain-enforced program or script logic that controls how assets or state may change.
- [Soft Fork](https://buyhodlsell.com/terminology/soft-fork): A backward-compatible protocol change where upgraded nodes enforce stricter rules without splitting the network.
- [Stablecoin](https://buyhodlsell.com/terminology/stablecoin): A cryptocurrency designed to maintain a stable value, typically pegged to a fiat currency like USD.
- [Staking](https://buyhodlsell.com/terminology/staking): Locking or delegating tokens to support a proof-of-stake network or protocol in exchange for potential rewards.
- [Staking Rewards](https://buyhodlsell.com/terminology/staking-rewards): Token payouts earned by validators or delegators for participating in proof-of-stake security or protocol incentives.
- [Stop Limit Order](https://buyhodlsell.com/terminology/stop-limit-order): An order that activates at a stop price, then becomes a limit order that only fills at the limit price or better.
- [Taproot](https://buyhodlsell.com/terminology/taproot): A Bitcoin upgrade that enables more private and efficient spending using Schnorr signatures and script path commitments.
- [Testnet](https://buyhodlsell.com/terminology/testnet): A non-production blockchain network where developers test wallets, contracts, and upgrades using coins with no intended market value.
- [Throughput](https://buyhodlsell.com/terminology/throughput): The rate at which a blockchain processes transactions or data over time, often measured in TPS or bytes per block.
- [Timelock](https://buyhodlsell.com/terminology/timelock): A spending rule that prevents a transaction or output from being used until a specified time or block height.
- [Token](https://buyhodlsell.com/terminology/token): A transferable or accountable unit defined by a blockchain protocol, smart contract, or application ledger.
- [Tokenomics](https://buyhodlsell.com/terminology/tokenomics): The economic design of a token, including supply, issuance, distribution, utility, incentives, and unlocks.
- [Total Supply](https://buyhodlsell.com/terminology/total-supply): The amount of a coin or token that currently exists, including circulating, locked, reserved, and escrowed units.
- [Total Value Locked](https://buyhodlsell.com/terminology/tvl): The estimated value of assets deposited in a DeFi protocol, app, chain, or ecosystem at a point in time.
- [Transaction](https://buyhodlsell.com/terminology/transaction): A serialized state transition that a blockchain can validate, relay, and include in a block.
- [Transaction Fee](https://buyhodlsell.com/terminology/transaction-fee): The amount paid to miners or validators for including a transaction and consuming scarce block space or execution resources.
- [Transaction ID](https://buyhodlsell.com/terminology/txid): A transaction's unique identifier, usually derived by hashing its serialized contents according to the chain's rules.
- [Transactions Per Second](https://buyhodlsell.com/terminology/tps): A throughput metric showing how many transactions a network processes per second under defined conditions.
- [Trustless](https://buyhodlsell.com/terminology/trustless): A property where users rely on verifiable protocol rules instead of trusting a central operator or counterparty.
- [Two-Factor Authentication](https://buyhodlsell.com/terminology/two-factor-authentication): An account security method requiring two different proof factors, such as a password plus an app code or hardware key.
- [two-of-three multisignature](https://buyhodlsell.com/terminology/two-of-three-multisig): A wallet policy where any two of three independent keys can authorize a spend, balancing redundancy and theft resistance.
- [Uncle Block](https://buyhodlsell.com/terminology/uncle-block): A valid proof-of-work Ethereum block that was not canonical but could still be referenced for partial rewards.
- [Unconfirmed Transaction](https://buyhodlsell.com/terminology/unconfirmed-transaction): A transaction seen by the network but not yet included in a block, so its confirmation count is zero.
- [Universal 2nd Factor](https://buyhodlsell.com/terminology/u2f): A hardware-backed second-factor standard that uses security keys for phishing-resistant account login.
- [Unspent Transaction Output](https://buyhodlsell.com/terminology/utxo): A discrete spendable output on a UTXO blockchain, similar to a digital coin that must be spent whole.
- [User Activated Soft Fork](https://buyhodlsell.com/terminology/uasf): A soft-fork activation approach where upgraded economic nodes enforce new rules at a planned time or height.
- [UTXO Consolidation](https://buyhodlsell.com/terminology/utxo-consolidation): Combining many small unspent outputs into fewer larger ones to reduce future transaction size and fee overhead.
- [UTXO Set](https://buyhodlsell.com/terminology/utxo-set): The current database of all unspent transaction outputs that full nodes use to validate new spends.
- [Validator](https://buyhodlsell.com/terminology/validator): A consensus participant that proposes, verifies, or attests to blocks, often after bonding stake in a proof-of-stake network.
- [Value Overflow Bug](https://buyhodlsell.com/terminology/value-overflow-bug): A critical arithmetic error where transaction or supply calculations wrap around and create invalid amounts.
- [Vanity Address](https://buyhodlsell.com/terminology/vanity-address): A cryptocurrency address generated to contain a chosen prefix or pattern, found through repeated trial and error.
- [Vault](https://buyhodlsell.com/terminology/vault): A wallet design that adds spending delays, recovery paths, or guardians to limit damage from key theft.
- [Velocity of Money](https://buyhodlsell.com/terminology/velocity-of-money): The rate at which a monetary unit changes hands, often used to compare holding behavior with transactional use.
- [Verifiable Delay Function](https://buyhodlsell.com/terminology/vdf): A function designed to require a minimum sequential computation time while producing a proof that is quick to verify.
- [Verifiable Random Function](https://buyhodlsell.com/terminology/vrf): A cryptographic function that produces random-looking output with a proof anyone can verify using a public key.
- [Verkle Tree](https://buyhodlsell.com/terminology/verkle-tree): A commitment tree using vector commitments to create smaller state proofs than many Merkle tree designs.
- [Version Bits](https://buyhodlsell.com/terminology/version-bits): A Bitcoin soft-fork signaling mechanism where miners set bits in the block version field to show readiness.
- [Vesting](https://buyhodlsell.com/terminology/vesting): A release schedule that unlocks tokens or equity-like rights over time, often using cliffs and gradual unlocks.
- [View Key](https://buyhodlsell.com/terminology/view-key): A read-only key that reveals selected wallet activity or balances without granting spending authority.
- [Virtual Machine](https://buyhodlsell.com/terminology/virtual-machine): A deterministic execution environment that runs smart contract code the same way across validating nodes.
- [Volatility](https://buyhodlsell.com/terminology/volatility): The degree of variation in an asset’s price over time; higher volatility implies larger and more frequent price swings.
- [Volume](https://buyhodlsell.com/terminology/volume): The amount of an asset traded over a period, measured in units of the asset, quote currency, or notional value.
- [Wallet](https://buyhodlsell.com/terminology/wallet): Software or hardware that manages signing credentials, addresses, transactions, and access to blockchain assets.
- [Wash Trading](https://buyhodlsell.com/terminology/wash-trading): Trading in which the same person or coordinated group effectively takes both sides to create misleading activity without meaningful economic ownership changing.
- [Watch-Only Wallet](https://buyhodlsell.com/terminology/watch-only-wallet): A wallet that monitors balances and transactions but cannot spend because it lacks the required private keys.
- [Weak Subjectivity](https://buyhodlsell.com/terminology/weak-subjectivity): A proof-of-stake property where new or long-offline nodes need a recent trusted checkpoint to sync safely.
- [Web3](https://buyhodlsell.com/terminology/web3): A broad term for internet apps that use blockchains, wallets, smart contracts, and tokens for ownership or coordination.
- [Wei](https://buyhodlsell.com/terminology/wei): The smallest denomination of Ether, with 1 ETH equal to 10^18 wei for exact integer accounting.
- [Whale](https://buyhodlsell.com/terminology/whale): A person, fund, company, exchange, or wallet that controls enough of an asset to meaningfully affect market liquidity.
- [Whitepaper](https://buyhodlsell.com/terminology/whitepaper): A project document explaining the problem, proposed solution, design, economics, and goals at a high level.
- [Witness](https://buyhodlsell.com/terminology/witness): In SegWit transactions, the witness is the separate field that carries signatures and other unlocking data.
- [Wrapped Token](https://buyhodlsell.com/terminology/wrapped-token): A tokenized representation of an asset on another chain, typically intended to be backed and redeemable 1:1.
- [X-only Public Key](https://buyhodlsell.com/terminology/x-only-public-key): A 32-byte public key format that stores only the x-coordinate, used by BIP340 Schnorr signatures and Taproot.
- [Yellow Paper](https://buyhodlsell.com/terminology/yellow-paper): A formal technical specification that defines a protocol's state transition rules, data structures, and execution behavior.
- [Yield](https://buyhodlsell.com/terminology/yield): The return earned on crypto assets over time, commonly expressed as APR, APY, rewards, fees, or interest.
- [Yield Farming](https://buyhodlsell.com/terminology/yield-farming): Actively moving crypto capital across protocols to earn incentives, fees, interest, or other on-chain rewards.
- [Yul](https://buyhodlsell.com/terminology/yul): A low-level intermediate language in the Ethereum toolchain used for EVM-oriented optimization and code generation.
- [Zero Confirmation](https://buyhodlsell.com/terminology/zero-confirmation): A transaction observed before any block has included it.
- [Zero-Knowledge Proof](https://buyhodlsell.com/terminology/zero-knowledge-proof): A cryptographic proof that convinces a verifier a statement is true without revealing the private information behind it.
- [zk-Rollup](https://buyhodlsell.com/terminology/zk-rollup): A Layer 2 system that batches transactions off-chain and posts validity proofs on-chain for efficient verification.
- [zk-SNARK](https://buyhodlsell.com/terminology/zk-snark): A succinct non-interactive zero-knowledge proof system with small proofs and fast verification.

## Articles (21)

- [Bitcoin Cash After Layla: Tools, Experiments, and Open Work](https://buyhodlsell.com/articles/bitcoin-cash-after-layla): Layla gave BCH developers more ways to build contracts. Here's what the tools support and what still needs work.
- [Blockchain Congestion: How Queues Build and Fees Rise](https://buyhodlsell.com/articles/blockchain-congestion-throughput-fees-stability): See why transactions can keep waiting after a traffic spike ends, how fees affect their chances, and what BTC and BCH do about capacity.
- [BCH May 2026 Upgrade: Post-Activation Verification Guide](https://buyhodlsell.com/articles/bch-may-2026-upgrade-readiness): What BCH users and service operators should check after Layla, from wallet support to transaction handling and recovery.
- [Bitcoin Cash Outlook: Capabilities, Constraints, and Adoption Questions](https://buyhodlsell.com/articles/bch-positioned-for-future): Assess BCH through its payment and contract capabilities, security and coordination constraints, adoption, and evidence to watch.
- [Bitcoin Cash Scalability: Capacity, ABLA, and Node Tradeoffs](https://buyhodlsell.com/articles/bch-scalability-global-scale): Explore BCH scalability through block capacity, ABLA, UTXO concurrency, propagation, validation, storage, fees, and Layer 2 tradeoffs.
- [CashTokens vs ERC-20: Token Tradeoffs on Bitcoin Cash and Ethereum](https://buyhodlsell.com/articles/cashtokens-vs-erc20): Compare CashTokens and ERC-20 across issuance, validation, programmability, fees, metadata, administration, and ecosystem maturity.
- [UTXO vs Account Model: Scaling, Privacy, and Smart Contract Tradeoffs](https://buyhodlsell.com/articles/utxo-advantages-smart-contracts): Compare UTXO and account-based chains across state, concurrency, privacy, smart contracts, fees, and developer tradeoffs.
- [Bitcoin Cash and Post-Quantum Vaults: Current Capabilities and Limits](https://buyhodlsell.com/articles/bch-quantum-resistance): Understand quantum risks to Bitcoin-style signatures, BCH's opt-in post-quantum vault experiments, and what remains unreviewed or undeployed.
- [Bitcoin Cash May 2026 Upgrade: What Changed in Layla](https://buyhodlsell.com/articles/bch-may-2026-upgrade-preview): Review the activated May 2026 BCH upgrade, its four CHIPs, and what changed for node operators, users, and contract builders.
- [Bitcoin Cash May 2025 Upgrade: BigInt Math and VM Limits](https://buyhodlsell.com/articles/bch-may-2025-upgrade): Understand how the May 2025 BCH upgrade added BigInt arithmetic and replaced several legacy VM ceilings with targeted limits.
- [Bitcoin Cash Upgrade History: Major BCH Changes from 2017 to 2026](https://buyhodlsell.com/articles/evolution-of-bitcoin-cash): Follow major BCH upgrades from the 2017 split through ASERT, introspection, CashTokens, ABLA, BigInt, VM limits, and Layla.
- [CashFusion Privacy: What the Combination Counts Do—and Do Not—Show](https://buyhodlsell.com/articles/cashfusion-counting): Learn how CashFusion combines BCH inputs and outputs, why the possible groupings grow quickly, and why that count is not proof of anonymity.
- [How TX::Watch Detects and Displays CashTokens](https://buyhodlsell.com/articles/tx-watch-cash-tokens): See how TX::Watch decodes CashToken prefixes, compares inputs and outputs, classifies activity, and resolves optional metadata.
- [Simple Cryptocurrency Wallet Guide for Beginners](https://buyhodlsell.com/articles/simple-wallet-guide): Choose, install, back up, and safely test a first cryptocurrency wallet for Bitcoin, Bitcoin Cash, Ethereum, or another network.
- [Your First Cryptocurrency Wallet: A Safe BCH Walkthrough](https://buyhodlsell.com/articles/your-first-wallet): Set up a first Bitcoin Cash wallet with a careful walkthrough for official downloads, recovery backups, receiving, and sending.
- [How to Use TX::Watch, a Live Blockchain Visualizer](https://buyhodlsell.com/articles/transaction-visualizer): Open the live BTC and BCH visualizer, then learn what its particles, blocks, fees, and transaction rankings tell you.
- [How to Use Buy Hodl Sell: Guides, Glossary, and Live Tools](https://buyhodlsell.com/articles/introduction): Learn how Buy Hodl Sell connects practical cryptocurrency guides, a plain-language glossary, and live Bitcoin and Bitcoin Cash research tools.
- [Crypto Wallet Security: Backups, Seed Phrases, and Safe Storage](https://buyhodlsell.com/articles/wallets-3-securing-funds): Protect a crypto wallet with practical routines for backups, device security, transaction review, recovery tests, and inheritance.
- [Crypto Wallet Features: What to Compare Before Choosing](https://buyhodlsell.com/articles/wallets-2-features): Compare wallet recovery, verification, transaction control, privacy, asset support, and security features before choosing one.
- [Crypto Wallet Basics: Wallet Types, Keys, and Custody](https://buyhodlsell.com/articles/wallets-1-intro-and-types): Learn what crypto wallets actually do, how keys and addresses work, and how custody, connectivity, and recovery define wallet types.
- [The Cryptionary: A Plain-Language Cryptocurrency Glossary](https://buyhodlsell.com/articles/terminology-guide-launch): Use the Cryptionary to understand technical, market, wallet, token, and cryptocurrency community terms in plain language.

## Project facts

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- Authored articles and terms are stored as Markdown and rendered with MDX components
- Live tools use external network and market-data sources; session data may be incomplete
- Content is educational and should be checked against linked primary sources for current details

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Generated: 2026-09-12