ERC-721

Standard for non-fungible tokens (NFTs).

Educational content only. This page does not provide investment, legal, or regulatory advice.

Why it matters

ERC-721 matters because it affects financial interpretation, product decisions, and industry communication.

ERC-721 is commonly explained through its core definition and the practical example used in the glossary.

A common mistake is to use ERC-721 without understanding its operational and regulatory context.

ERC-721 may vary across payment rails, regulations, and market practices.

3D Secure

Security protocol for online cards.

Account Abstraction

Smart contracts as wallets.

Account Updater

A service that refreshes expired or reissued card details for recurring billing merchants.

Algorithmic Trading

Trading using automated algorithms.

API

Application Programming Interface.

API Banking

Banking services provided via APIs.

Stripe

Stripe: Payment tokenization 101

Used for payment tokenization, network token, and account updater context.

Coinbase

Coinbase Learn: Crypto glossary

Reference source for crypto infrastructure terminology.

Bank for International Settlements

Bank for International Settlements: Crypto reserves and transparency

Used as an institutional reference for reserve transparency context.

Author

Founder and multilingual fintech glossary editor

Reviewer

Editorial and source review layer

Reviewed

3/15/2026