2025-09-08 Waku Weekly

Highlights §

• nwaku:
  • Add sync API to ffi protobuf demo
  • Start new nim-ffi repo containing the manual (no protobuf yet) API approach
• js-waku:
  • Implement Light Push Error codes in The Browser

Incentivise running a Waku infrastructure node §

• [Deliverable] Service Incentivisation - Service incentivisation roadmap & spec
  • achieved: [research] working on the next iteration of the MVP “pre-spec v0.2” (a more elaborate version of this doc based on discussions so far, to arrive at a more exact Store incentivization MVP protocol definition)
  • next: [research] open up another round of discussion for the MVP to converge on a spec

Improve DevEx: API, TWN, Metrics, Docs §

• [Deliverable] Global Network Metrics

  • next: [nwaku] Add new metrics

• [Deliverable] Introduce Waku API in the Browser

  • next:
    • [js-waku] introduce Codec entity
    • [js-waku] messaging storage
    • [js-waku] update improve sender and receiver types
    • [js-waku] implement Send API

• [Deliverable] Implement Light Push Error codes in The Browser

  • achieved:
    • [js-waku] improve types of LightPush / Filter
    • [js-waku] lightPush v3: determine if light push peer supports v3
    • [js-waku] lightPush v3: add types for new error codes
    • [js-waku] remove old error types
    • [js-waku] lp-v3: handle error codes returned by lp-v3 peers

Introduce Mixnet For Message Sending §

• [Deliverable] Integrate libp2p mix into lightpush
  • achieved: [research] Post on how mix can be implemented in js and integrated into js-waku
  • blockers: [research] Still waiting on p2p team to get back on SURB implementation.

Create Chat SDK MVP §

• [Deliverable] Chat SDK Developer Preview
  • achieved:
    • [ChatResearch] Initial SDS Integration into POC.
    • [ChatResearch] Updated protocol/APi to include deliveryAcknowledgements.
    • [chat] fix rln dep in nwaku nimble build, https://github.com/waku-org/nwaku/pull/3556
    • [chat] using nwaku to publish and subscribe within chat-sdk, https://github.com/waku-org/nim-chat-sdk/pull/10
  • next:
    • [ChatResearch] Implement Noise encryption
    • [ChatResearch] Api cleanup
    • [chat] fix CI build of nwaku nimble, test the chat-sdk nwaku integration.

Formalize and Expand Waku Web Apps §

• [Deliverable] Forum PoC

  • achieved:
    • [chat] bookmarking
    • [chat] local-first application with indexedDB
    • [chat] centrally consistent/optimised state storage and access with hooks
    • [chat] call signs
    • [chat] moderation toggle
  • next:
    • [chat] debugging ordinals API
    • [chat] demo + feedback
    • [chat] library extraction

• [Deliverable] Reliable Qaku & library

  • achieved:
    • [chat] Fixed Qaku Cache (Qaku-Codex integration basically) and switched it to TWN - it is using https://github.com/waku-org/waku-go-bindings/pull/50
    • [chat] Fixed qakulib to work with snapshots and Qaku Cache properly
    • [chat] WIP demo of ZKPassport + Waku + minting TST for RLN: https://www.youtube.com/watch?v=51bgepzjuJ8
  • blockers: [chat] issues with zkpassport and Rarimo, speaking with the teams to resolve them https://x.com/vpavlin/status/1963223793444200681 https://x.com/vpavlin/status/1963502085514608771

Deploy RLN onchain tree on L2 Testnet §

• [Deliverable] Create nim-ffi
  • achieved:
    • [nwaku] Started very first feature branch in nwaku using external nim-ffi
    • [nwaku] Add synchronous calling API - with return value support through protobuf ser/de to opinionated protobuf ffi demo
  • next:
    • [nwaku] Make protobuf ffi demo to support multiple contexts and multi-language (Rust/C++/Go) code gen
    • [nwaku] Complete RLN simplification

Harden RLN Testnet Deployment §

• Minting of (Sepolia) ERC-20 Tokens for RLN Deposits is permissioned
  • achieved: [research] local verification of TST proxy contract and minter role functions
  • next: [research] dogfooding minter role and implementing mintWithEth function for non-minter roles

Maintenance §

• achieved:
  • [js-waku] fix nwaku interop tests breaking changes
  • [js-waku] investigate flaky interop e2e tests and fix them
• next:
  • [js-waku] consolidate headless-tests and browser-tests packages
  • [js-waku] add nwaku-style logs for browser simulations
  • [js-waku] refactor browser simulations package
  • [nwaku] fix: Do not allow invalid pubsub topic subscription via relay REST api