Trading Glossary

D

Danksharding

Ethereum's data availability scaling roadmap, expanding blob capacity to serve a large ecosystem of rollups.

Data Availability (DA)

The guarantee that the data required to verify or reconstruct a chain's state has actually been published and can be retrieved. A prerequisite for trust-minimized scaling.

Data Availability Layer

A network specialized in publishing and guaranteeing the availability of data, used by rollups and modular chains.

Data Availability Sampling (DAS)

A technique by which light nodes verify that data has been published by randomly sampling small portions of it.

Data Protection / GDPR

Rules governing the processing of personal data. The tension between immutability and data erasure rights is a recognized and unresolved design challenge.

Decentralization

The distribution of control and data across many independent participants rather than a single authority. Measured across several dimensions: node distribution, client diversity, governance, and geographic spread.

Decentralized Autonomous Organization (DAO)

An organization whose rules and treasury are governed by token-holder decisions executed through smart contracts.

Decentralized Compute

Marketplaces for distributed processing capacity, including GPU capacity for machine learning workloads.

Decentralized Exchange (DEX)

A trading venue where transactions settle on-chain and users retain custody throughout.

Decentralized Finance (DeFi)

Financial services delivered through smart contracts on public blockchains, without a central intermediary holding user funds.

Decentralized Identity (DID)

Identity credentials controlled by the individual rather than issued and held by a platform.

Decentralized Physical Infrastructure Network (DePIN)

Networks using token incentives to coordinate deployment of real-world infrastructure: wireless coverage, storage, compute, mapping, energy.

Decentralized Science (DeSci)

Applying token and governance mechanisms to research funding, peer review, and intellectual property.

Decentralized Storage

Networks providing data storage across distributed independent providers.

Defence in Depth

Layering independent controls so that the failure of one does not result in total compromise.

Deflationary Mechanism

Any process reducing supply, most commonly burning.

Degen

A high-risk-tolerance participant; used self-deprecatingly as often as pejoratively.

Delegate

A participant who votes on behalf of others, typically publishing a voting rationale.

Delegatecall

A low-level call executing another contract's code in the caller's storage context. The mechanism enabling proxies, and a common source of severe vulnerabilities when used carelessly.

Delegated Proof of Stake (DPoS)

A variant where token holders vote for a limited set of block producers.

Delegation

Assigning one's voting power to another party while retaining ownership of the tokens.

Delegator

A token holder who assigns stake to a validator without operating infrastructure, sharing in rewards and, on some networks, in slashing risk.

Delisting

The removal of an asset from a trading venue.

Delta-Neutral Stablecoin

A stablecoin maintaining its peg by holding a spot position offset by an equivalent short derivatives position.

Depeg

A sustained deviation from the target value.

Deployment

Publishing contract bytecode to the chain, producing a permanent contract address.

Deposit Sweeping

Consolidating funds from individual user deposit addresses into a central operational wallet.

Derivation Path

The structured index (for example m/44'/60'/0'/0/0) specifying which key in the hierarchy is being derived. Mismatched derivation paths are a frequent cause of "missing funds" support tickets when a phrase is imported into a different wallet.

Derivative

A contract deriving its value from an underlying asset.

Deterministic Finality

Finality guaranteed by the protocol once a defined condition is met, after which reversal would require provable and punishable misbehaviour. Characteristic of BFT-style proof-of-stake chains. Also called economic finality.

Devnet

A short-lived, often local or private network used during active development.

DEX Aggregator

A service that routes an order across multiple venues to obtain the best available execution.

Diamond Hands / Paper Hands

Holding through drawdowns / selling at the first sign of trouble.

Difficulty

A parameter defining how hard it is to find a valid proof-of-work block.

Difficulty Adjustment

The periodic recalibration of difficulty to maintain a target block time despite changes in total network hashrate.

Digital Asset

Any asset represented and transferable in digital form on a ledger. Broader than "cryptocurrency" — includes tokenized securities, stablecoins, and NFTs.

Digital Signature

A cryptographic proof, generated with a private key, that a specific message was authorized by the key holder and has not been altered.

Dilution

The reduction in a holder's proportional ownership as new supply enters circulation.

Disaster Recovery (DR)

The plan and capability for restoring operations after a major failure, including key recovery procedures.

Distributed Ledger Technology (DLT)

The broader category of shared, synchronized databases maintained across multiple sites or institutions. All blockchains are distributed ledgers; not all distributed ledgers use a chain of blocks.

Dominance

An asset's share of total crypto market capitalization. Bitcoin dominance is the most commonly tracked variant.

Double-Spending

Spending the same digital unit more than once. Preventing it without a central ledger operator is the original problem blockchains were designed to solve.

Drawdown

The decline from a peak to a subsequent trough, expressed as a percentage.

Dust

Token balances too small to be economically transferable given network fees.

Dusting Attack

Sending tiny amounts to many addresses to trace their subsequent movements and deanonymize their owners.

Dynamic NFT

An NFT whose metadata changes in response to on-chain or off-chain conditions.

DYOR

Do your own research.