Private, decentralised marketplace needed by Lisbon Circle

A powerful winnable issue has emerged from the Lisbon Circle that could benefit from collaboration across the Logos community.

The Cape Verdean neighbourhood of Talude, in North Lisbon, is a largely self-organised and informal community. It’s currently hosting a summer residency by the local art collective Mais Uno +1, in partnership with AMRT, a grassroots cultural group working out of a small community centre in the area.

While visiting, we connected with a local Grogue distillery (Cape Verde’s traditional rum). It’s a small family-run operation with deep roots in the community. The founder was warm and open to support. As you can imagine, their operations are entirely informal: no clear brand, no compliant bottling, and certainly no easy route to market.

This visit uncovered a clear opportunity:

Build a decentralised, privacy-preserving marketplace that supports informal entrepreneurs like this one, starting in Talude.

This would directly respond to:

  • The income inequality challenges posed by Portugal’s large informal economy.
  • The need for safe, community-owned tools for marginalised groups to access economic opportunity without exposure or surveillance.
  • A real-world test case for Logos infrastructure applied locally and in partnership with trusted community actors.

Proposed Tech Stack & Marketplace Specs:

Core Needs

  • Easy-to-use listing + discovery system for local products/services
  • Reputation layer (pseudonymous but verifiable via trusted intermediaries)
  • Private peer-to-peer messaging and coordination
  • Optional escrow or trusted intermediary for payments
  • On/off ramp flexibility (cash, crypto etc.)

Suggested Tech

  • Waku for encrypted messaging between buyers and sellers
  • Codex to store listings and reviews in a decentralised way
  • Pseudonymous credentials TBC

What’s Next

This could be a powerful and tangible use case for a Logos-aligned Circle to prototype locally.

We’re aiming to gather a small team to:

  • Co-design with the community
  • Explore branding and packaging support for the distillery
  • Build the marketplace MVP or test environment
  • Host a music/culture event as a launch and first sales opportunity

Below are some ideas for how you could contribute, although any collaboration is welcome!

Tech & Product

  • Help define the technical specs for the marketplace MVP — what features, flows, and safeguards we need
  • Build the MVP using Waku, Codex, or other decentralised tools (front-end + back-end dev welcome)
  • Design lightweight onboarding flows for sellers who may be low-literacy or new to tech
  • Explore credentialing systems for local trust

Branding & Creative

  • Design a brand identity for the Grogue product that reflects its Cape Verdean roots and community values
  • Create bottle labels and packaging suitable for market-ready distribution
  • Help visualise the marketplace UI/UX, posters for local outreach, and event branding

Please leave a comment if you would like to help contribute in any way!

5 Likes

Thank you for the initiative @Bitzu!

I am happy to PM and coordinate as needed.

One key objective at this point is to produce a one-page document that everyone agrees upon before any code/design takes place. This should include strict boundaries for scope, and the most minimal mvp definition possible.

Ideally we can narrow down on this asynchronously, if needed we can schedule a call in the Logos discord with participators.

2 Likes

Love the idea:-) I believe building a general marketplace/craigslist/… of sort has been on the radar for some Waku folks for a while, so this could be a great opportunity and motivation:)

I’d love to participate:)

I am curious how do you imagine the flow to work - let’s say I want to list my liquor (or any other product) for sale - I can list it anonymously/pseudonymously, but when I want to actually sell and deliver the goods, it could be police waiting for me taking me for fraud and for not having proper licensing etc.

Looking forward to see more info:)

2 Likes

Looks good, excited to support this on the ground :partying_face: :partying_face:

3 Likes

Love the marketplace idea. Seems to fit also with the agorist mindset. This marketplace could also allow for various types of experimentation in social organization to emerge as a byproduct. I am keen to see how this plays out and happy to provide any additional ideas to support feature design.

1 Like

Thank you @chair, would love your help with this!

I think we can also expand the scope of the marketplace to allow freelancers to list their services, wdyt? It was brought up by another Lisbon community here: Supporting local creatives in Quinto do Mocho, Lisbon

1 Like

I need you privacy experts to help with that haha. I think you would need to ship the goods by post, right? We can recommend buyers use a PO box too maybe.

1 Like

Lets use this thread to narrow done the onepager and go from there.

@vpavlin @Bitzu how does this look to you for MVP feature set? What is missing or what should be omitted?

Core Features:

  1. Product/Service Listings - Simple form to post items with description, price
  2. Basic Discovery - Browse/search listings by category
  3. Private Messaging - Encrypted buyer-seller communication via Waku
  4. Reputation System - Simple rating system (pseudonymous but verifiable)
  5. Payment Coordination - Facilitate payment method agreement (cash/crypto/escrow)

Technical Stack:

  • Waku - Encrypted messaging between users
  • Codex - Decentralized storage for listings and reviews
  • Pseudonymous Credentials - TBD community trust system
  • Simple web interface for low-tech accessibility

Lets lock in features then tackle functionality, usability, etc :slight_smile:

This looks perfect. When we have the one pager I’ll go back to the grouge factory and make sure it meets their expectations, but all of the features we discussed are covered here :slight_smile:

1 Like

We just had a call with Ori from EF who’s focus has been on looking at various decentralized marketplaces and why they failed, what is missing etc.

He shared an article and a talk on the topic:

https://x.com/orishim/status/1929980877477445916

(I have not watched or read it yet, but thought it might be useful)

1 Like

Thank you for the great resource, it’s part of a three part series:

  1. https://x.com/orishim/status/1882064487718777094
  2. https://x.com/orishim/status/1906804719676178626
  3. https://x.com/orishim/status/1929980877477445916

Current blockchain infrastructure has matured enough to support comprehensive DeCom systems by unbundling traditional marketplace functions into composable primitives across five key areas.

  • Five Marketplace Functions: Identity & Reputation, Listings & Discovery, Negotiation & Agreement, Settlement & Fulfillment, Risk Management
  • Emerging Primitives:
  • Identity: Personhood verification, credential verification, attestations, web proofs, social graphs
  • Discovery: Open social networks, tokenization, decentralized storage, private set intersection, AI agents
  • Payments: Crypto gateways, e-commerce providers, private payments, escrow, agentic payments
  • Risk Management: Arbitration systems, chargebacks, insurance mechanisms
  • Current Experiments: Online services (job marketplaces), local services, goods, rentals showing mixed results
  • Infrastructure Gaps: Need for interoperable reputation, confidential transactions, scalable arbitration
  • Future Patterns: Hybrid architectures, mini-app ecosystems, AI-powered discovery and dispute resolution

Linking relevant VAC Forum thread from @SionoiS Web3 marketplace mechanisms - Waku - Vac

See NOVALAR: Decentralized Housing Protocol - Seeking Community Input & Collaborators - #3 by fryorcraken