Glossary Terms Starting with O

Oracle Deviation Threshold

An oracle deviation threshold is the configured change that triggers a report update, alert, source rejection, or other oracle action. A threshold…

Oracle Exploit

An oracle exploit is a practical attack that abuses vulnerable data feeds or oracle-dependent logic to extract value or corrupt system state.…

Oracle Extractable Value

Oracle Extractable Value is MEV created when oracle updates reveal or trigger profitable on-chain actions such as liquidations, arbitrage, or repricing. Searchers,…

Oracle Failure

Oracle failure occurs when externally supplied data becomes unavailable, stale, incorrect, manipulated, inconsistently formatted, or unusable by a blockchain application. Consequences include…

Oracle Feed

An oracle feed is a continuously or periodically updated stream of externally derived values delivered to blockchain applications through a defined interface.…

Oracle Heartbeat

An oracle heartbeat is the maximum scheduled interval between feed updates when the observed value has not crossed its deviation threshold. The…

Oracle Latency

Oracle latency is the end-to-end delay between an external observation and that information becoming usable by a blockchain application. The path can…

Oracle Liveness

Oracle liveness is the ability of an oracle system to keep producing valid, sufficiently fresh reports when applications need them. Liveness differs…

Oracle Manipulation

Oracle manipulation is an attack that distorts data sources, reporting, aggregation, delivery, or consumption so contracts accept a misleading value. An attacker…

Oracle Median

An oracle median is the middle accepted observation after values are ordered, reducing the influence of a minority of extreme reports. Median…

Oracle Network

An oracle network is a coordinated set of nodes that observes, aggregates, signs, and delivers external data to blockchain applications. Decentralizing reporters…

Oracle Node

An oracle node is an operator-run component that retrieves external data and participates in producing or transmitting authenticated oracle reports. The node…

Oracle Operator

An oracle operator is the person or organization responsible for running, securing, and maintaining one or more oracle nodes. Operators may be…

Oracle Problem

The oracle problem is the challenge of giving deterministic blockchain programs reliable information about facts their own ledger cannot verify. An oracle…

Oracle Reputation

Oracle reputation is an evidence-based assessment of a reporter or provider using its historical correctness, availability, behavior, and incident record. Reputation is…

Oracle Risk

Oracle risk is exposure created when systems rely on external data whose accuracy, availability, timing, incentives, or governance may fail. Oracle Risk…

Oracle Staleness

Oracle staleness occurs when a reported value is older than the freshness required for the decision a blockchain application must make. A…

Oracle Update

An oracle update is a newly accepted report that changes or refreshes the external data available to a blockchain application. Updates can…

Order

Order is a structured commercial record representing a customer’s request or commitment to obtain specified goods, services, or access. In order and…

Order Amount

Order Amount is a defined monetary amount associated with an order at a particular stage or for a particular purpose. In order…

Order API

An order API lets systems create, retrieve, update, cancel, and track commercial orders and their items, totals, customers, payments, and fulfillment state.…

Order Attribution

Order Attribution is the process of linking an observed payment to the correct order record using identifiers, addresses, amounts, customer context, and…

Order Automation

Order automation uses software rules to create, validate, route, update, fulfill, notify, and reconcile orders with less manual intervention. Safe Order Automation…

Order Cancellation

Order Cancellation is the process and resulting state in which an order is stopped before full completion under merchant or customer rules.…