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Token Standards Library

A reference library for the token standards that matter to teams building onchain. Each entry covers what the standard is, how its interface works, the patterns and gotchas you'll run into, and how Hgraph indexes data for that standard.

What you'll find in each entry​

Every standard's page follows the same shape so the library reads as a coherent reference:

  1. Header: EIP number, status, type, authors, dates
  2. Overview: what the standard is and why it exists
  3. Interface Specification: events and functions
  4. Function Selectors: 4-byte selectors for ABI work
  5. Notable Tokens / Implementations: concrete examples
  6. Risks and Gotchas: patterns to avoid
  7. Data on Hgraph: what's indexed and where to query
  8. External References: links to the spec, reference implementations, and related reading

If you're integrating a token, start with the Overview and Interface Specification. If you're auditing a contract or debugging an integration, skip to Risks and Gotchas.

What's published​

  • ERC-20: Fungible token standard

More standards are being added as we publish them.

  • ERC Indexer: How Hgraph indexes ERC tokens on Hedera, with the GraphQL schema and full query examples.
  • ERC Token Standards (blog): Long-form overview of the standards that matter most right now.