# What Is an "NFT Appraisal Oracle"? ▴ Learn

**Published:** 2025-11-16
**Categories:** Learn

---

## What Is an “NFT Appraisal Oracle”?

An NFT appraisal oracle is a decentralized service that provides a reliable, real-time estimate of an NFT's fair market value to a smart contract. Since NFTs are illiquid and subjective, these oracles use machine learning, sales history, and collection rarity data to generate a price feed, which is critical for calculating loan-to-value ratios for NFT collateral.

What Is a ‘Liquidation Cascade’ and How Can It Be Front-Run?

What Role Do Oracles Play in Providing Reliable Market Data to Smart Contracts for Options Trading?

Can Smart Contracts Interact with Real-World Data and Events?

How Do Oracles Provide Necessary Data for Decentralized Options Pricing?

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