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RLN on Logos Blockchain

Mar 24, 2026, 3 min read

RLN on Logos Blockchain

https://github.com/logos-messaging/pm/milestone/64

Estimated date of completion: Testnet v0.3

Resources Required:

  • 1 Delivery engineer
  • Collaboration with Logos Blockchain team (LEE/LEZ)

Logos Delivery currently supports RLN with a hardcoded Ethereum-based membership backend. This milestone introduces a pluggable RLN membership interface and adds Logos Blockchain (LEE) as a membership backend.

Pluggable RLN membership interface: Logos Delivery should support different implementations of RLN membership management through a common interface. This enables:

  • EVM-based (Ethereum L1/L2, including gasless Status Network)
  • Logos Blockchain (LEE program)
  • Centralized server (temporary, for development/testing)
  • Any future backend

This is important because Status will use RLN on Status Network (EVM-based, gasless), while Logos Testnet will use RLN on Logos Blockchain. Both must be supported simultaneously.

Context:

  • LEE (Logos Execution Environment) is the smart contract runtime.
  • LEZ (Logos Execution Zone) is the zone implementation running on Logos Blockchain using LEE.
  • Currently, RLN contracts are deployed on Ethereum Linea Sepolia.
  • AnonComms is developing the RLN membership allocation LEE program
  • AnonComms is also researching an RLN on gasless L2 transactions on Status Network.

FURPS

Dependencies

  • AnonComms: RLN membership allocation LEE program deployed and functional
  • AnonComms: Zerokit 1.0 API stable and public
  • Logos Blockchain: LEE program model and tooling ready

Risks

Risk(Accept, Own, Mitigation)
LEE maturityLEE is under active development. The program model and tooling may not be stable enough for RLN deployment.
Cross-team dependencyRequires coordination between Messaging, AnonComms, and Logos Blockchain teams. Align timelines early.

Deliverables

Implement pluggable RLN membership interface

Owner: Delivery Team

Design and implement an interface in Logos Delivery that abstracts RLN membership management. Concrete implementations:

  • EVM-based (existing Ethereum contract interaction, including gasless Status Network via RLN Prover)
  • Logos Blockchain (LEE program, once AnonComms delivers it)
  • Centralized server (for development/testing)

The interface covers:

  • Credential generation
  • Membership registration, extension, withdrawal
  • Proof generation and validation
  • Credential persistence and export/import

Integrate Logos Delivery with RLN on Logos Blockchain

Owner: Delivery Team

  • Implement the Logos Blockchain backend for the pluggable interface
  • Logos Delivery nodes can generate and validate RLN proofs against the LEE-deployed membership
  • Transition Logos testnet fleets from Ethereum Sepolia to Logos Blockchain

Update RLN membership management library

Owner: Delivery Team

Feature: RLN Membership Management

FURPS:

  • F1. Can generate RLN credentials.
  • F2. Can insert RLN membership via pluggable backend.
  • F3. Can extend RLN membership via pluggable backend.
  • F4. Can withdraw deposit via pluggable backend.
  • F5. Membership credentials are encrypted by default on local disk.
  • U1. RLN membership details can be exported and imported.
  • U2. Deployment details (backend type, address/endpoint) are persisted by library and in exports.

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