Clear DefinitionsProgrammable NFT
1 min read
Pronunciation
[proh-gram-uh-buhl en-eff-tee]
Analogy
Like a digital trading card that levels up or evolves based on how it’s used in a game.
Definition
An NFT with embedded logic—via on‑chain oracles, dynamic metadata, or attached smart contracts—that can change state, behavior, or appearance based on external inputs or events.
Key Points Intro
Programmable NFTs add interactive, dynamic features beyond static collectibles.
Key Points
Dynamic metadata: Attributes update based on triggers.
On‑chain logic: Smart contract functions tied to NFT state.
Oracles: External data can drive NFT evolution.
Composable: Can integrate with DeFi or gaming mechanics.
Example
An RPG issues NFT weapons whose strength attribute increases based on on‑chain battle wins recorded via oracle.
Technical Deep Dive
ERC‑721 contract includes `updateAttributes(tokenId, data, sig)` callable by oracle. Metadata URI points to on‑chain JSON renderer that reads on‑chain attributes.
Security Warning
On‑chain logic expands attack surface; audit dynamic update functions.
Caveat
Complexity can hinder compatibility with standard marketplaces.
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