Open Labels Initiative Logo

The missing context layer for Web3

A unified standard, shared registry, and trust layer for EVM address labels.

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Why OLI Matters?

Blockchains are transparent, but they are not understandable

Centralized Data Silos

Context is locked away in proprietary data silos, creating a fragile ecosystem dependent on a few companies.

Redundant Infrastructure

Teams are forced to rebuild the same infrastructure repeatedly, stifling innovation and wasting resources.

User Vulnerability

Users are vulnerable to scams that better context could prevent, lacking the information needed for safe interactions.

OLI provides the missing universal, human-readable address book for Web3

The Three Pillars of OLI

OLI is built on three composable pillars that work together to create a rich and reliable data ecosystem

Watch 12-min Explainer

Label Schema

Data Model & Tag Definitions

standardcomposable

The foundation—a shared data model and taxonomy for labels. An open, versioned standard that ensures everyone speaks the same language, making on-chain labels truly composable.

View documentation

Label Pool

Label Pool & Data Entry

decentralizedEASAPI

Built on the Label Schema, the Label Pool is a decentralized, on-chain database powered by EAS. The central hub where you contribute once, and your labels are seen everywhere.

View documentation

Label Trust

Label Confidence & Trust Algorithms

algorithmsconfidencesecurity

An optional, sophisticated algorithmic layer that turns raw, crowd-sourced labels into reliable, production-ready signals by analyzing source diversity and attestor reputation.

View documentation

Still have questions?

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How to Get Involved with OLI

OLI is built to be used. Find and share contract labels once, and use them everywhere.

Adopt the Label Schema

🏗️ The Foundation for Everyone

Whether you're consuming labels, producing labels, or building community tools, everything starts with understanding the OLI Label Schema. This is your essential first step.

✓Standardized data model
✓Community-driven taxonomy
✓Tag definitions & patterns
✓Ecosystem compatibility
🚀 Start with Label Schema

Then choose your path

Data Consumers

Wallets, dApps, Developers

Stop dealing with hex addresses. Integrate the Label Pool to provide your users with rich context about addresses and security warnings.

  • •Integrate in minutes with TypeScript SDK or Python package
  • •Enhance UX with human-readable context
  • •Browse and search label coverage and request labels
Integration guides

Label Producers

L2 Teams, Explorers, Security Firms, Applications

Your labels are a public good. Contribute them to increase your project's visibility and security across Web3.

  • •Contribute in seconds via web UI or tools
  • •Boost reach across wallets and dApps
  • •Build reputation as trusted contributor
Start contributing

Community

Researchers, Analysts, Power Users

The Label Pool is a public good, owned by the community. Your expertise is critical to its success.

  • •Explore data and uncover new insights
  • •Add labels for contracts you discover
  • •Join governance and contribute to the discussions
Join community

Using the OLI Label Pool

Search Contracts

Explore and discover labeled smart contracts. Find detailed information about EVM addresses.

Search now

Create Attestations

Contribute to the ecosystem by creating attestations for contracts you know about.

Start attesting

Analytics

View statistics and leaderboards of attestors and explore trending labels.

View analytics

Products Using OLI

Discover projects leveraging the Label Pool

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Supported By

Grant from

Ethereum Support Program
growthepie