February 17, 2022

The Bitcoin Bankathon: Challenges, Solutions, and Innovation for El Salvador through Open Banking

On September 7, 2021, El Salvador became the world’s first country to embrace Bitcoin as legal tender. In preparation for this momentous development, Open Bank Project supported Salvadorian bank Banco Hipotecario in their transition from institutionalised finance to decentralised finance via the OBP platform and APIs. OBP, along with API3 and Banco Hipotecario, organised the country’s first ever Bitcoin Bankathon between 19.11.21 – 07.12.21.

The pioneering Bankathon took place in El Salvador and online. Brilliant minds across the world took the opportunity to tackle local challenges by building the best Bitcoin-enabled banking apps using an innovative developer toolkit.

The Bankathon

The OBP event challenged teams with different skill sets to build banking apps to help unlock access to financial services for the people of El Salvador. TESOBE OBP, API3, Tropykus, RSK and QREDO combined their technologies to form an infrastructure for teams to use as a developer toolkit in creating their apps.

This infrastructure provided participants with the building blocks on which to build their applications.

The challenges were all aimed at creative problem solving of a variety of El Salvador’s key issues through the use of blockchain and APIs. These challenges included:

  • Building the next neobank by considering how a more inclusive Bitcoin-enabled neobank might appear for El Salvador in 2022.
  • Redesigning remittances: as El Salvador’s economy depends largely on money coming from outside the country in the form of high-cost remittances, this challenge was created to come up with an innovative app that would allow Bitcoin remittances to improve the lives of those who rely on such remittances.
  • Helping the nation battle climate change: how can banks and crypto companies support the citizens of El Salvador in tackling climate change?
  • Empowering women: women in El Salvador have to fight for their basic rights every day, and this is no different in the world of crypto. How can Bitcoin and banking data support women’s economic empowerment?
  • Empowering merchants: the merchant sector is a big part of El Salvador’s economy. How can we empower merchants using open bank data and smart contracts?

Even though these challenges were specific to El Salvador, the Bitcoin Bankathon had an inclusive perspective, inviting participants located anywhere in the world. The idea arose from the belief that diversity is key to creative problem solving because it offers a holistic vision for solutions to tackle challenges by using competition.

Just as in any other hackathon, teams competed not only out of a spirit of innovation and problem solving but also for prizes. The prizes included five different categories for items such as: best overall product, best use of off-chain data (for teams using the data server over the airnode), best use of advanced technology, most visionary concept and, finally, an award for the most active social media supporter of the hackathon. Prizes were up to $50,000 USD per team, which would then serve as seed capital for the perfection and eventual implementation of their winning app.

Outcome of the Bankathon

As noted, the hackathon was built on the idea of inclusivity and diversity. 325 participants from 43 countries took part, coming up with 77 concepts and ideas which translated into 22 submissions in total. This diversity of backgrounds guaranteed the inclusive spirit of the crypto world, a world made by the people for the people. By including participants from outside El Salvador, the Bankathon incentivised coders and problem solvers from across the world to produce solutions for this new banking paradigm. This inclusivity was reflected in the winning teams featuring winners from seven different countries.

The award for the best overall product was a tie between two excellent apps:


Bitcoin neobanking and investment platform focused on small companies and entrepreneurs.


Growr On-Chain (Peseta)

Decentralized P2P lending protocol that allows investors to fund lending pools according to their risk appetite, and borrowers to apply for unsecured loans.




Cardinal provides virtual debit cards, funded using the client’s Bitcoin wallet.


Pisto is an open banking payment system enabling merchants to accept BTC by providing customers with digital gift cards, which can be topped up by relatives abroad.




Open banking payment system enabling merchants to accept BTC by providing customers with digital gift cards, which can be topped up by relatives abroad.

And finally, prize number four, which was for the app with the most visionary concept, was a tie between:

Tlanetia is a financial inclusion platform that encourages communities of women to become financially independent by creating their own community banks financed by their collective savings.


Financial inclusion platform encouraging communities of women to create community banks financed by their collective savings.


Set of integrated tools that allow micro and small merchants to record operations and carbon emissions, aiming to facilitating access to credit.

The success of the Bankathon was greatly appreciated by everyone involved, inspiring problem solvers both in the country and across the world to brainstorm solutions to help make our world a better place by harnessing decentralised finance and the possibilities it offers.

As it is to be expected for a first hackathon event of this nature, there is always room for improvement. However, despite being a developing country, El Salvador is on the verge of tremendous growth in the DeFi area. Some may question the stability of the country’s infrastructure and capacity for integration, but the fact that El Salvador is pioneering and stepping out of the status quo of banking systems makes this an exciting and groundbreaking opportunity for involvement.

Thanks to Banco Hipotecario’s spirit of innovation, the hackathon was a great pilot project that confirmed El Salvador’s capacity and hunger for growth in the world of Decentralized Finance. The takeaway sentiments from the event were: satisfaction with the outreach and success of the Bankathon and the desire to host future events of this kind and include other experienced partners from the region.