Create a proof of concept app running on the blockchain and win big prizes

On 1/2/3/4/5 November SteemFest² is happening in Lisbon. As part of this event the SteemFest hackathon takes place on November 1st. We challenge you to make a proof of concept, working(!) app on (any) blockchain.

Be smart and check out the prize-sponsors below (Steem, Decent, Bitshares) and pick on or combine some of those chains to be relevant and get a change to win those cryptomonetary prizes!

LX Factory - View from the rooftop


Wednesday November 1st - 24 hour hack session @ Silver Room , Cowork Lisboa, LX Factory 

We have reserved a dedicated hackerspace in the inspirational LX Factory (Cowork Lisboa's SilverRoom) for you where you can stay 24 hours (until 2 November 11 AM) to work on your concept. We have arranged lunch, dinner, breakfast and enough f&b to keep you happy & active. There are some couches in Cowork Lisboa so you could try to crash a bit for a nap. Additionally if you really need to sleep, check the neighbouring Dorm Hostel

09:00 Registration & Coffee
09:30 Welcome / Opening
09:40 Partner API's & Team Search
10:15 Hacking begins!
13:00 Lunch
19:00 Dinner
20:00  Hacking continuous overnight into Thursday November 2nd
07:00  Breakfast in the morning of Thursday November 2nd
10:00  SilverRoom closes - If you have a full Conference ticket, be sure to head over the SteemFest Conference Day 1 Venue, or see you on Friday at Conference Day 2 for your pitch & demo!

On 31st October we will have some informal pre-hackathon drinks. Location & time to be announced to participants.

Montes Claros - Secret Spot


Friday November 3rd - Pitch your app @ SteemFest - Conference Day 2, Montes Claros

Pitches including demo's take place on Friday November 3rd (conference day 2 of SteemFest) where you will get 5 minutes to pitch & demo your Proof of Concept app to a jury and all SteemFest attendees. After the presentation there will be a short awardshow and a drink. At night you are welcome to celebrate and decompress at 'A Night of Steem' in Suspenso (former Santiago Alquimista - Rua do Santiago 19 - Castello). 

You are encouraged to form teams, it's more fun! If you don't have a team, you are welcome to introduce yourself on stage in the morning of November 1st to pitch yourself :).


SteemFest Hackathon - Focus Chains - Prize Sponsors

Three different, graphene/chainbase based blockchains are participating as prize-sponsor partners and we challenge you to build a app running on their chains. Be smart, spread your bets and try to make apps where you utilise and combine the chains unique features into a new app. 

  • Steem - decentralised social media platform where anyone can earn rewards by blogging and curating blogs. Make a compelling app for Steem users. Find inspiration for already built apps on
  • Bitshares - decentralised banking & (crypto) exchange platform. Make a compelling app for Bitshares users. For example a portfolio viewer or a market making trading bot. Or come up with any of your own ideas, for example by utilising User Issued Assets (your own tokens). 
  • DECENT - decentralised content distribution. Make a compelling app to integrate DECENT into the World of Text Media.

View full rules

Hackathon Sponsors


$7,222 in prizes

Best Overall App

Best proof of concept app/hack of the hackathon!

Bitshares - Best App

Best proof of concept app/hack utilising the Bitshares blockchain

Decent - Best App

Best proof of concept app/hack utilising the Decent blockchain

Devpost Achievements

Submitting to this hackathon could earn you:


Anyone being present in person during the hackathon in the hackerspace (and demo/pitches) in Lisbon is welcome to join this hackathon, provided you have subscribed to the mailinglist and registered. You also need a Steem account. 

Every hackathon participant who wants to be elligble to win prizes should be presenting in person on Friday 3 November from 14:00 onwards in SteemFest Conference Day 2's venue (afternoon): Lisbon Secret Spot, Montes Claros, Lisboa. 

Every hackathon participant who wishes to join the full multi-day program of the SteemFest event (Pre Drinks, Conference Day 1, Conference Day 2, social events at nights, DIY weekender citytrip, closing dinner) should buy a ticket for the full event here. Attending the hackathon is not a free ticket for the full SteemFest event, only for the hackathon related parts.

How to enter

  • Join the hackathon by clicking the big 'Register for this Hackathon' button.
  • Additionally please subscribe the mailinglist here.
  • Get yourself a Steem account if you don't have one. 
  • Registration is free, we take care of 24h of food & beverages. If you need to sleep, arrange it yourself (there are some couches in the hackerspace, and across the road is a hostel).

Note that If you want to join the full multiday SteemFest event, you will need to buy a full conference pass here. Alternatively you can spend the next day exploring Lisbon and we invite you back on friday 3rd in the afternoon - 14:00 onwards for demos/pitches in Lisbon Secret Spot - Montes Claros.


Judge Judy

Judge Judy
Real judges to be announced

Judging Criteria

  • Useability & Value
    Whether your proof of concept is actually adding value to the blockchain and it's end users.
  • Tech
    Whether your proof of concept is technologically advancing
  • Design & Interaction
    Whether your proof of concept is looking polished and well though through