Hacking USD400bi in Brazil Public Goods - How Celo Community Wrote Their Name in 🇧🇷 History

Hi All,

Last year was a super busy one. Now I am having some more time to share some of the amazing accomplishments of last season.

This post will be dedicated to the hackathon with the community and the Brazilian government for the tokenization of the federal assets in an unprecedented way. It may be worth your time reading, if you are curious about how web3 can increase transparency and possibilities in federal public assets in benefit of accountability and the citizens.

For context purposes, Brazil is an advanced country crypto-wise - from legislation to adoption and use cases, to community and builders. There are different posts/comments here addressing the accomplishments of the Brazilian community and some particularities of the market. On a government level specifically, so Brazil had mainly explored Web3 use cases trough the Central Bank and the Securities Exchange Commission and the National Development Bank.

The Ministry of Economics for that matter had not yet explored with Web3, neither other prominent hackathon partners such as SEPRO (the Government IT Company), ENAP (the National School for Public Administration) and Flacso (LatinAmerican School for Social Studies). SPU, the secretariat within the Ministry of Economics and responsible for the Patrimony of the Union is 168 years old, while the Republic of Brazil is only 200. Meaning: this was an innovative approach undertaken by one of the oldest structures of the 5th largest nation in the world.

An opportunity emerged to host an open source education marathon, to explore in the intersection of web3 and real world use cases for crypto with a sweet REFI angle. Brazil has over USD400bi in public owned assets including buildings, forests, indigenous land, rivers, ocean and beaches, and an advanced innovation policy. Thus, the hackathon objective was to explore with web3 possible solutions to legal obligations pertaining the 1) registry of assets; 2) use (e.g. selling/legal tenders/loans); 3) compliance and reporting. The challenge was named: “Hackathon Web3 - Tokenizing Public Assets”.

Why is this relevant for Brazilians:

  1. public assets are goods the state takes care but ultimately “belong” to the people. Having more transparency, accountability and innovation regarding some of our most valuable resources seem like a must and an excellent area for web3 exploring.
  2. it was the first time such different partners gathered to learn and work side by side with the civil society to think about problems and BUILD together. Its a paradigm shift on how public state goods can benefit from a different approach to problem solving.
  3. It was during the world cup and 25+ projects were delivered. This means a lot.

Why (if) this is relevant for Web3: I have my opinion but would love to hear from you on the thread below.

Quick Facts

Learning and hacking marathon lasted 15 days
500+ individuals enrolled
25+ projects delivered
19 awarded projects
USD30k in prizes
Workshops and 24/7 support was provided, including workshops ministered by public servants to explain their work and possible use cases
Fully open source
All workshops, projects, pitches and further info are available here

IMO, a public body that seeks innovation such opens that door leaves a very important message, that it believes in thinking about solutions in a creative way. I could not proceed w/o registering very gracious thank you to the amazing people who worked with us in this journey from the public entities above, specially Fabiana Rodopoulos and Yutaka Shirata.

I also have to thank dearly Celo community and wider web3 community for embracing this challenge, and also welcome the new faces/companies to the ecosystem. To several participants this was their first contact ever with Web3, and this challenge was a real accomplishment because of your adherence, interest and hard work. A high number of projects was finalized and submitted in a rather tight timeframe, in the intersection of rather complex matters. We praise you and your creativity.

Below you find more links to the initiative and further information.



The evaluations were in charge of 10 judges selected among representatives of civil society with experience and skills in several different fields to meet the criteria of the hackathon. Among the evaluators are DeFi specialists, developers, blockchain project founders, asset managers and financial market specialists, investors, technologists, engineers and analysts with extensive curriculum in both academic and corporate environments. See who they are here.


General Prize: Tokenization of the Union’s Assets

  • 1st place overall - Team Insignia | Project Fractionation and auction of properties at the service of the Union
  • 2nd place overall - Team Tokenverse | Web3 UX Project, DvP and Permissioned Tokens
  • 3rd place overall - GeoReg Team | GeoReg Project: registration of georeferenced properties in blockchain

Challenge 1: Characterization and Incorporation: Registration of real estate, domain chain and Issuance of titles with the force of public deed

  • 1st place - Team BlockTeam | Blockchain property registration platform project
  • 2nd place – Team Satoshi Chain | Project Tokenizing Union Assets
  • 3rd place - BlockchainOne Team | SPUnet Project on Web3

Challenge 2: Allocation of Union Assets

Category Assignment of Use (Lease, leasing, registration of occupancy and lending)

  • 1st place – BlockImobGov Team | Block Imob Project - Property Management
  • 2nd place Team Meraki Web3 | Tokenized TAGP Project

Category Environmental preservation (carbon credit, legal reserve and environmental recovery)

  • 1st place – Team Soluchain | Gov Carbon Project
  • 2nd place – Web3Connect Team | Bioswap Project
  • 3rd place (tie)
    • Team dg_guardians-Br | Green Digital Guardians Project
    • Team Odoya | Project Project-Celo-Access-Control-Api
  • Category Challenge Sale (Auction, direct sale)
  • 1st place – Team Mobiup | Project Concession of real right of use
  • 2nd place – AREN Team | AREN Project - A Tokenization Project for the Government

Real Estate Investment Fund Category

  • 1st place – Team Meraki Web3 | FIT Project - Tokenized Real Estate Funds
  • 2nd place – FlorencioInteli team | Iby Platform Project
  • 3rd place – Federal Tokens Team | Federal Tokens Project

Challenge 3: Compliance and Contract Management

  • 1st place – Team Focus | Electronic Information System Project (SEI) on WEB3
  • 2nd place – Team TokenBR | Easy Contract Project - SPU
  • 3rd place – Team CapivaraCoders | Project CapDocs

Access more information on the challenge page.


Partnerships, over 50 hours of meetings, dozens of e-mails, plannings, two official ceremonies (opening and closing), workshops, hackathon support, mentoring, participants Q&A, trophy, swags, administrative work, social media support, content production and more was performed by myself and 3 part time Ambassadors. Looking back I honestly dont know how we accomplished this, but would like to say I am humbled to have worked by your side.

@ewertonLP , developer responsible for the technical part and support for the competitors. Solid, reliable and with a great sense of humor.

@RafaMoura , community manager and content production. Most tranquil person in challenging situations you will ever meet.

Juliana Rios , event planner and magician - makes the impossible happen before your eyes.

The Hackathon Partners

The initiative is a partnership between the Secretariat for Coordination and Governance of the Union’s Heritage (SPU), an agency of the Ministry of Economy responsible for managing the Union’s assets, Serpro, the largest public company for government technology solutions, and the National School of Public Administration - Enap, following its pioneering initiatives for the digital transformation of its management processes and relations with citizens. The entities joined expertise with other partners, Flacso and the Celo Foundation, to carry out this first collaborative educational activity on Web3 between members of the public administration and civil society. The purpose of the Hackathon Web3: Tokenização do Patrimônio da União is to promote education on the Web3 theme, and encourage the co-creation of solutions for federal public administration challenges.

The Trophy

The artist Ananda Nahú donated a work of her own authorship to be the Hackathon trophy and exclusive NFTs, in which she made an interpretation of federal assets. The art of the award shows the assets of the Union gathered and integrated with each other through blockchain technology, all of them being interconnected as if it were a big jigsaw puzzle where the final image appears after all the pieces are connected. Each piece represents a part of that heritage; are connected through the modernization brought about by the blockchain symbolized by the green and yellow circuits that represent Brazilian technology working to help connect our country’s society with its own national treasures.

Ananda Nahú is a painter, muralist and visual artist with almost two decades of career. Her style is distinguished by its visual multiculturalism, presenting an extensive anthropological cultural study of society, rescuing the history of art from the most diverse nationalities to contemporary times. His curriculum includes a strong presence in the European and US art market, and artistic-social projects of the UN, European Union, Cleveland Foundation, CEC Arts Links / Rockefeller Foundation, Xalabas Di Kumunidadi project, The Point CDC NYC, Simon Bolivar Foundation, Casita Maria Center for Arts & Education, Bronx Health Reach and NYCHA (New York City Housing Authority). Ananda was a guest artist in advertising campaigns for multinationals such as Nike, Gucci, Ride with Via, Bloomberg, has fixed murals at Marsh & McLennan, YWCA (the largest and oldest multicultural women’s organization in the USA), ThoughtWorks and Marina da Glória. She recently painted the entire 3rd floor of the new Rosewood São Paulo, a complex that is part of Cidade Matarazzo. In 2015 she was selected by CNN Style and Phaidon as one of the most influential artists in Brazil. In 2016 she broke the record in the USA, where she painted the largest mural in the state of Ohio, funded by the Cleveland Foundation, the largest and oldest foundation in the USA.

Next Steps
Soon we will update this thread with next steps to this initiative.


Not many words to describe how truly amazing this is :heart:


Could not stay calm when I saw this happening right before my eyes. This is a major advancement for Brazil and the end-owner, the brazillian people.

This is huge! waiting to see the following steps.


this was my first hackathon ever and I had such an amazing experience thanks to @MilaRioja @ewertonLP and @RafaMoura!

Also really exciting to see the Brazilian government agencies seeking innovation and Celo becoming a key partner on the web3 front.

A really big step towards providing the conditions for prosperity to all!

update: I was part of the BlockTeam. Our project was to tokenize public land registries in NFTs including land information as metadata. Larger documents were stored in IPFS and linked to the NFT.

To record the information, the SPU had to audit and approve the records using a multi-sig wallet. The NFTs were stored in a safe managed by SPU and customized according to their business requirements.

Our initial solution improved transparency, security and portfolio management. We also envisioned big efficiency gains in the medium term, such as land contract emission and authentication, better sales and rentals management, and the possibility of crowdsourcing missing information through an oracle.

You can find our pitch here (PT-BR only): [Hackathon 2022] Equipe BlockTeam- Projeto Plataforma de cadastro de imóveis em Blockchain - YouTube


This was our first Hackathon and we finished in 3rd place (tied) in the category Environmental Preservation (carbon credit, legal reserve and environmental recovery) it was a great success for us because the Hackathon was conducted in Portuguese and we we didn’t talk about it but we did the presentation in “Portunol” it was a very nice experience. :upside_down_face:

We believe that these types of experiences are the door for many projects to have their first progress and succeed, many of the projects in this Hackathon are focused on environmental solutions that often do not attract the attention of investors and these financing opportunities and making yourself known to governments are very important. :hugs:

Many thanks to all the team including @RafaMoura @ewertonLP and specially @MilaRioja for your efforts gettin this done.

Together we can help to save the planet :green_heart: :earth_americas:


A proud moment for the whole Celo ecosystem, kudos to the team for pulling off this incredible feat. I hope we use this experience in other regions and make similar magic happen.

So grateful to have Brazil leading the way and excited to build on it to make a case for other nation states to follow :raised_hands:t4: :raised_hands:t4:

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It was a very special hackathon, where I had my son as a partner in building 2 projects, both of which were awarded (Meraki Web3 team). Following and asking questions during the workshops was essential, as was mentoring with Camila Rioja, who not only reaffirmed the strengths of our project, but also gave presentation tips that were crucial.

I learned a lot about the SPU ecosystem and now look at the distribution of federal assets with different eyes, which at the end of the day, belong to all Brazilian citizens.

Inspired by Celo, I created the Care2Earn initiative, where the local population earned tokens for acting as a watchdog and participating in votes, something that almost never happens in the real life of the average Brazilian citizen, who sees rulers making decisions out of pure ego.

I dream of being able to launch any of the projects, either the Tokenized Real Estate Funds, which takes this investment structure out of the big cities and big banks and brings it to the interior of the country; or the Tokenized TAGP, which will allow for simple and participatory transfer of management of thousands of beaches to municipalities, generating wealth for their low-income residents.

Thank you Camila, Ewerton and Rafa for the huge support. These were 2 awards that, in addition to the financial gain, helped me show my son, a young adult, that with effort, ideas, a lot of reading, and hard work, anything is possible… even 2 non-programmers winning a hackathon!

Rodrigo - Meraki Web3

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Appreciate your engagement!

Hi all! I gave a talk on ETH Denver about this experience, and suggested that we think with the wider community about further ways to make this initiative grow. Here is the link:(https://twitter.com/ethereumdenver/status/1631397937245978624?s=12)

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