anchorregistry

No API key. No account. No dependency on AnchorRegistry infrastructure.

Just an RPC endpoint and the contract address.

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anchorregistry is a Python package for reading from the AnchorRegistry smart contract — a permanent, on-chain registry of digital artifacts deployed on Base (EVM L2). It proves that any registered artifact existed at a specific point in time, anchored immutably to a public blockchain.

The package queries the contract directly via JSON-RPC. There are no AnchorRegistry servers in the call path. Anyone can clone the repo, run the notebooks, and verify the registry independently — forever.

SPDX-Anchor: https://anchorregistry.ai/AR-2026-pJ53j6K

Installation

pip install anchorregistry

# With DataFrame support
pip install anchorregistry[analytics]

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Documentation

• Quickstart
  • Installation
  • Configure
  • Your first anchor
• Configuration
  • Priority chain (highest → lowest)
  • Environment variables
  • configure() function
  • Network presets
  • Switching networks within a process
  • Using a custom RPC endpoint
• API Reference
  • Query Functions
  • Verification
  • Authentication
  • Watermarking
  • Analytics
  • Configuration
  • Exceptions
• Contract Reference
  • Deployed Contract
  • Anchored Event
  • Sealed Event
  • READ_ABI
  • Artifact Types

Interactive Notebooks

• Quickstart
• Querying
• The Trust Proof
• Watermarking
• DataFrame Analytics
• Authenticate — Trustless Initiation Proof

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Links

• anchorregistry.com

• anchorregistry.ai

• PyPI — anchorregistry

• GitHub — ar-python