ETHDenver & ColoradoJam 2021 Bounty, Track & Quadratic Funding Winners

ETHDenver

Published in

ETHDenver

20 min readFeb 13, 2021

The Spork Marmot has spoken! Here are all of ETHDenver & ColoradoJam 2021’s winners:

SPONSOR BOUNTY WINNERS

STATE OF COLORADO

myColorado: 5-Star Ratings
Winner: Two’s Complement — $1000
Proof of licensing/credential
1st Place: Colorado OS — $500
2nd Place: DK — $500
Check-In
1st Place: Two’s Complement — $500
2nd Place: DK — $250
Petitions
Winner: ColoradoDao — $250
Winner: All-In One IDC — $250
Winner: DigID — $250
Universal Wallet + Colorado Identity
Winner: Two Complement — $1000
web3-enabled Student Transcript
Winner: DigID — $500
CDA Fun Finder
Winner: Team Badge — $500
Winner: ColoradoDao — $500
myColorado: Multiply
Winner: Team Badge — $125
Winner: All-In One IDC — $125
Winner: DigID — $125
Winner: ColoradoDao — $125
Winner: Two’s Complement — $250

OPOLIS

Build a Referral System for $WORK Rewards
Winner: Masanori Uno — $1500
Build an Open API spec
Winner: Alfred Goes to Work — $500

UNISWAP GRANTS PROGRAM

Innovation Bounty
Winner: Jambot — $5000
Winner: Simple Finance — $5000
Winner: Sublimate Finance — $3000

NEAR PROTOCOL

Blue Sky Hack ($1000 each)
Winner: USDNEAR Stablecoin
Winner: Furball
NFTs Minbase Bounty
Winner: Two’s Complement
NEAR + Ceramic Bounty (500 DAI)
Winner: True Review
Girl Power Bounty ($500 each)
Winner: IDX Ceramic Todos
Winner: Benefit
Winner: Super Rinkeby
Global Citizens Bounty ($500 each)
Winner: Token MEME
Winner: Unirace
Social Impact Bounty ($500)
Winner: CryptoPlants Save The Planet

HARMONY

Best Case Uses
Winner: Super Rinkeby Game — $2000
Winner: BeNeFiT — $2000

CERAMIC

Best use of the Ceramic Network
Winner: DocuMint — 750 DAI
Winner: Tiles — 750 DAI
Winner: Token with Manifesto — 750 DAI
Winner: Identity Legos — 750 DAI
Best use of IDX (Identity Index)
Winner: Identity Legos (All-in-on-IDX) — 750 DAI
Winner: TrueReview — 750 DAI
Winner: DIGID — 750 DAI
Winner: Portex — 750 DAI
Best new tools for the Ceramic Network
Winner: DocuMint — 750 DAI
Winner: Tiles — 750 DAI
Ceramic for Social
Winner: Farenheit — 750 DAI
Ceramic x Textile
Winner: Farenheit — 1000 DAI Total
Ceramic x NEAR
Winner: TrueReview — 1000 DAI Total

CELO

Port the Unicorn
Winner: Last Mile — $500
Winner: Crypto Plants — $500
You Had Me At Celo
Winner: Macchu Picchu — $500
Winner: Crypto Plants — $500
The Prestwich Special
Winner: Last Mile — $500
Cheers Guv’nor!
Winner: Gasless — $500
The Big Cheese
Winner: Sublimate — $1000
Winner: Macchu Picchu — $1000
People’s Choice Award
Winner: Macchu Picchu — $500
The OG Celo Bonus: Best Original Celo DApp
Winner: Macchu Picchu — $1000

1INCH

Bounty Winners
Winner: Gasless — $2000
Winner: Yogen — $2000

COMPOUND

Compound Composability — $5000 of cUSDC
Winner: Philippe Dumonet, Steven F, Tolulope Adeleye

CHAINLINK

Best Chainlink Enabled Projects
Winner: Pr!ce — $1000
Winner: TruCol — $1000
Winner: Identity Lego Starter — $1000
Winner: Crypto Plants — $1000
Runner Up Chainlink Enabled Projects
Winner: Unirace — $500
Winner: DaoMV — $500

CONSENSYS

Best Ethereum DeFi projects utilizing 2+ ConsenSys products/projects
Winner: Gasless Wallet — $1000
Winner: Skejj — $500
Best DApp, tool, extension, plugin or fix on ConsenSys Quorum
Winner: BruFinance — $1000
MetaMask Choice Award
Winner: CryptoPlants — $500
Runner-up: Star Relay — $250
Bring Uniswap and ITX closer together
Winner: SwapperSwap — $1500
Truffle
Winner: Custom Contract — $250
Diligence Design Bounty
Winner: Rodrigo Salcedo — $250
Winner: Ann Brody — $250

TEXTILE

Build your app on IPFS and Filecoin with Textile Buckets and Hub APIs
Winner: Yogen — $500
Winner: Supersonic — $500
Winner: Portex — $500
Winner: NFTea Room — $500
Winner: Masterfile — $500
Textile Bucket & Filecoin
Winner: Alfred Goes to Work — $500
Winner: Crypto Plants — $500
Winner: Token with Manifesto — $500
Ceramic x Textile Bounty
Winner: Token with Manifesto — $500
NuCypher x Textile Bounty
Winner: Masterfile — $500

OFFCHAIN LABS

Build anything on Arbitrum
Winner: Yogen — $1500

SUPERFLUID

Best app built with Superfluid
1st Place: Creaton2 — $2000
2nd Place: Mastering Superfluid — $1000
Best payments hack
Winner: Nifty Chess — $500

TELLOR

Build a project using Tellor
1st Place: Tellor RNG — Krishang Nadgauda — $1,500
2nd Place: Sublimate.finance — $1,000
3rd Place: TrueCol — $500

ACALA

Deploy a DApp on Polkadot using Acala EVM — $1000
Winner: Decentralized Order Book & Limit Order on Acala

IPFS

Best use of ipfs for collaboration
Winner: Documint — $500
Best use of ipfs for infra
Winner: token with manifesto — $250
Best use of ipfs for infra
Winner: Super Saver — $250
Best use of ipfs for infra
Winner: Gasless Wallet — $100
Best use of ipfs for identity
Winner: True Review — $200
Best use of ipfs for identity
Winner: Degenics — $200
Best use of ipfs for asset storage
Winner: NotrealAI — $100
Best use of ipfs for asset storage
Winner: NFTea Room $200
Best use of ipfs for asset storage
Winner: Pr!ce — $200
Best use of IPFS for gaming
Winner: Super Rinkeby — $500
Demo with Brave
Winner: Cryptoplants — $50

UNSTOPPABLE DOMAINS

IPFS Video Uploader — $1000
Winner: 2C’s | Two Complement — True Review
Blockchain Domain DAO Accessibility — $1000
Winner: God and his Disciples — Pr!ce
IPFS Website + Blockchain Domain — $1000
Winner: Super Rinkeby team with Super Rinkeby game

POLKADOT

Polkadot non-technical hack
Winner: Caitlyn Lenhoff — $500

TRGC

Open Hack 1 — $2000
Winner: Yogen!
Open Hack 2 — $1000
Winner: FreeFund

PARSIQ

Advanced Block Explorer
Winner: Kirill Korolyov, Viktor Leandersson — $2000
Runner-up: Martin Solari, Alejandro Adorjan — $500

NUCYPHER

Most interesting project built utilizing the NuCypher Network
Winner: Alfred — $2500
Winner: Masterfile — $1000
Best integration of NuCypher encryption and Textile buckets for content distribution
Winner: Sam Orend — $750
Winner: Sikuang Zheng — $250

FILECOIN

PDF Previews in Slate
Winner: Super Saver — $125
Filecoin ecosystem growth incentives
Winner: 0xReferrals — $125
Build a token-related dapp using Filecoin.js and the MetaMask FilSnap Plugin
1st Place: — $250
Storage DAO
1st Place: — $400
Integrate an existing backup tool with Filecoin
1st Place: — $400
Blocklists/Denylists Registry
1st Place: — $400

BICONOMY

Leverage meta-transactions
Winner: Creaton2 — $1500

FIO PROTOCOL

Innovative FIO integration
Runner-up: Ron Stoner $100

CASPER LABS

Crack Casper
Winner: Crack Casper — $2500
Demonstrate social key recovery on Casper
Winner: Key Recovery on Casper — $5000

DAOHAUS

Expanding The Haus
Winner: Mastering Superfluid — $1000
Winner: NFTea Room — $1000

UNIQUE.ONE

Prize Details TBC

STAKEFISH

Submission Did Not Meet Requirements

SOLANA

Submission Did Not Meet Requirements

GNOSIS

Submission Did Not Meet Requirements

HEDERA HASHGRAPH

Submission Did Not Meet Requirements

THE GRAPH

Submission Did Not Meet Requirements

PORTIS

Submission Did Not Meet Requirements

GALA GAMES

Submission Did Not Meet Requirements

TERRA

Submission Did Not Meet Requirements

MAKER FOUNDATION

Submission Did Not Meet Requirements

SPLUNK

Submission Did Not Meet Requirements

ETHEREUM FOUNDATION

Submission Did Not Meet Requirements

IMPACT BOUNTY WINNERS

Qualifications

All entries must addresses a specific UN Sustainability Goal (SDG)
When submitting for an Impact Bounty, you must specifically call out the SDG you are addressing and how your project lends value to the SDG.

Judging Criteria

Evaluated based on 7 different criteria, including how impactful was the project, sustainability, and best use of blockchain tech

Prizes

$3000 awarded to the top 5 scoring projects

WINNERS

Project Name: Degenics

The fully anonymous home DNA testing marketplace

Buidlers: Jean-Daniel Gauthier, Kevin Janada, Gilang Bhagaskara, Ibnu Alhadid

More Details

Degenics creates a physical-digital bridge that allows users to send in genetic samples to be tested, completely anonymously
Payment is made in crypto, and no KYC data is shared
Genetics labs can list genetic testing products on the marketplace and provide results through asymetric encryption

Project Link

Project Name: TruCol

TruCol aims at building a decentralized platform for test-driven programming development.

Buidlers: Victoria Bosch, Marc Droogh, Kirina van der Bijl, Akke Toeter

More Details

Aims to eliminate the need for trust between sponsors and bounty hunters
The protocol creates a free and fair job market within which income inequalities between countries are eliminate
Meets UN Goal #8, to “Promote sustained, inclusive and sustainable economic growth, full and productive employment and decent work for all”.

Project Link

Project Name: Colorado OS

Colorado OS is how Web3 enables a digital backbone for a more usable, efficient, and secure public infrastructure in Colorado.

Buidlers: Zac Wolff, L Reynolds

More Details

Colorado OS is a series of decentralized license registries on Web3 with DeFi features.
Use Case #1: CPW DIGITAL PARKS PASS (Meets 7 of the UN SDGs)
Use Case #2: DIGITAL GAMING LICENSE ENTERTAINMENT + DOING GOOD WORKS

Project Link

Project Name: TOKEN MEME

Educating the next generation about blockchain and cryptocurrency Our project aims to be part of the solution in the United Nations SDG in providing quality education. Inspired by the Flat Stanley.

Buidlers: Prasad Kumkar, Marlene Veum, Kristine Mallari, Abhir Elandasserry

More Details

Aims to enrich the learning of kids how to code, socialize virtually in a trusted secure blockchain to their trusted friends.
Built on NEAR Protocol

Project Link

Project Name: Bru Finance

DeFi on Real World Assets (NFT) with Fixed Interest Rates

Buidlers: Abhishek Bhattacharya, Ashish Gahlawat, Harshala Pawar, Ashish Anand

More Details

Aims to make DeFi more accessible by removing the barrier of high-collateralization
Bru brings highly liquid commodities to DeFi world against which traditional institutions like banks already lend if commodities are stored in accredited warehouses on our parent startup
Use Case: Potential to have a positive impact on farmers in India, as farmers in India don’t have sufficient financial assets (options/futures/insurance) to protect their crops

Project Link

Top 20 Projects for Celebrity Judging

Team: 2C: Two’s Complement
Project: True Review- In the wake of Google censoring over 100,000 reviews from Robinhood’s app during the GME event, the online community has made it clear that people demand ownership of their VOICE and their DATA. True Review is a censorship-resistant review platform. It lets people OWN their reviews, and share them without fear of censorship. We used LOTS of awesome tech from our ETHDenver sponsors this year, integrating a spectrum of awesome tools in interesting ways. Reviews belong to the people, so let’s build it that way.

Team: All-in on IDX
Project: Identity Lego Starter Set — Demonstrating the power of decentralized identity through several new identity legos (SourceCred, myColorado, Property Ownership, & IdentityLink) that can be mixed & matched to enable new use cases. The problem Identity Lego Starter Set (4 pcs) solves:

SourceCred currently relies on the manual creation of aliases by the instance admin to aggregate Cred across accounts & platforms (Github, Discord, & Discourse). We created a service that allows the admin to automatically generate and link aliases from a list of ETH addresses. The service matches ETH address to IDX DID then to the associated index records.
Our myColorado IdentityLink service allows a user to add their digital Colorado ID as a verifiable credential to their IDX DID, so it is user-owned & controlled. Their credential can be used independently of the myColorado app in any number of ways.
Our Property Ownership Oracle (Chainlink) allows contracts to verify the owner of a land parcel in Denver County. For this POC, we’re using publicly available data and an exact name match (which could be compared to their digital ID credential). This service could be remixed to create a verifiable land title credential in IDX, as well. We plan to use this type of data for an AR metaverse project outside of this hackathon, the Geo Web (https://geoweb.network/).
We created a simple UI template to allow developers and users to more easily create verifiable credentials and link accounts to IDX DIDs.

Team: Creaton2
Project: Creaton — is a decentralized content-sharing platform that allows for secure transfer of content in exchange for streaming subscription payments. We provide a censorship-free alternative to centralized applications where our users are the only beneficiaries and fully control their data. Creaton has two main products as part of its ecosystem, Creaton Engine, and Creaton Market. Both are futuristic approaches to peer-to-peer content-sharing and highly well-suited with the Decentralized Finance (DeFi) economy, for creators to create unique revenue streams, build reputation, and award their early supporters.

Team: ColorDAO
Project: ColorDAO — ColorDAO helps the citizens to connect with their government through incentives and take an active role within their community.

Team: Defcon402
Project:Last Mile Crypto — An alternative communication method to access the Ethereum blockchain. Dialup, SMS, TDD, Wireless. In October 2020, only 59 percent of the global population had regular internet access. One of the greatest barriers between the rich and the poor is access to a banking system. Our goal is accessibility and inclusion. By utilizing alternative and legacy communication technologies, we can provide ethereum access to areas and populations with no internet access. This type of communication will further help developing countries and work towards global equality. Providing banking access to developing countries can promote financial inclusion; banking is no longer for the rich. It also allows engagement in microtransaction and microlending platforms. And the added transparency of a public ledger will help alleviate corruption and provide much needed oversight. Additionally, although our goal is to help developing countries, this method of technology would be useful in disaster areas, refugee camps, and avoiding government internet censorship. At risk of sounding like a beauty pageant contestant, we truly believe a well-scaled application like Last Mile Ethereum can help solve poverty and promote equality.

Team: Apoorv Lathey
Project: Dex Buy NFTS — Unique One Use 0x DEX Aggregator to swap any input token to ETH and buy NFTs directly from Unique.One Marketplace. Currently Unique.One Marketplace just allows ETH to use as currency to buy NFTs, which might prevent users from Buying NFTs if they want to spend different Tokens like DAI, USDC, etc. Here I have created a Proof of Concept that utilizes 0x to find the best liquidity pool to use when swapping from user’s token to ETH and so the slippage is at minimum.

Team: God and His Disciples
Project: pr!ce — A reimagined financial market, pr!ce, for social good. Buy shares of your favorite NBA players, trade in a fair market, win awards at the end of the season, and support SDG charities across the world.

Team: Super Rinkeby
Project: Super Rinkeby — A decentralized Super Mario-like game where you can magically change your character through an NFT purchase. The game is decentralized and cannot be taken down by game publishers since it is hosted on IPFS. The game has a stronger UX/UI than other blockchain games since it is built using our SDK that links to Unity, the world’s most popular game engine. By using Unity, we unlock blockchain game development to the millions of game developers who are currently using Unity to build web2 games. The game enables FOMO and superfan following by allowing gamers to buy and fully own limited supply, unique assets that develop their characters and game environment. In addition to the game, we brainstormed on how microtransactions would work in gaming in the future. Nightshade on the NEAR Protocol inspired us to rethink sharding 2.0. Instead of dedicated nodes to validating locale-specific data, we considered nodes validating DApp-specific data. We also considered community-centric validation. Each game download would include a node download. Gamers can decide if they want to toggle their node capacity on/off and depending on how much storage they want to provide. Gamers who participate in node validation will receive more in-game points.

Team: Herdius
Project:Unbounded.finance — Ethereum’s first on-chain SPAC including P2P, and OTC trading. Our main goal was to push the boundaries of DeFi and come up with something exciting and valuable. Our first product which we call CPV (Crypto Perpetual Vehicle) is an on-chain SPAC (Special-purpose acquisition company). We realised that with DeFi maturing, novice users needed an easy way to take advantage of arbitrage, flash loan, cross-exchange arbitrage opportunities. CPV allows exactly that, users can deposit their funds into our CPV contract and anyone on Ethereum can become an arbitrageur and make trades, loans, OTC/p2p swaps using the funds within the CPV. Users and arbitrageurs both receive warrants which can be converted to profit generated by the CPV or exchanged. We also built a P2P and OTC trade interface where users can create simple, secure trades across two assets. Although the future OTC and P2P users differ in a lot, we built this interface with the vision in mind that two random people on the street can facilitate a swap in a few minutes.

Team: Consenso
Project: Portex — Secure crypto portfolio management and exchange application. The problem Portex solves most of the existing management tools are managed by services that don’t guarantee complete confidentiality. Even the portfolio tools that guarantee don’t have a mechanism to exchange and share it with other users in a secure manner. We feel that it can be solved with the help of a user-controlled profile (Decentralized Identities) and an open yet secure way of exchanging messages. The solution we built using Portex provides a way for each user to maintain their portfolio confidentially. It also gives flexibility for the user to exchange their portfolio securely whenever there is a need to share such information with other users or institutions without exposing it to any intermediaries.

Team: Masterfile
Project: Masterfile — By tying digital rights management to an NFT we can enable a whole new class of digital assets to the ecosystem that has the potential to retain their value by avoiding commoditization by piracy (copy and paste). This has a wide range of potential applications, some of which are:

Secure File Access/Transfer (Intellectual Property, Medical Data, Whistleblowers, etc.)
Rare/Limited Edition Collectibles (Art, Comic Books, Trading Cards, etc.)
Paywalled Content
Licensing Agreements

We are particularly interested in introducing this type of technology to digital artists, as there is a demand from both the artist and collector side to be able to sell/collect digital art that maintains its value and limited availability, similar to traditional art collecting in the real world. Additionally, with the growing NFT collectibles market introducing this type of technology to digital artists and collectors can serve as an onboarding ramp into the cryptocurrency ecosystem.

Team: Nifty Chess
Project: Nifty Chess — Crypto can be difficult and intimidating, This app gives people a low-effort and fun introduction to crypto using cheap, easy to produce NFTs on xDAI chain.

Team: Xops
Project: Documint — An IDE for decentralized documents via Ceramic. Ceramic is awesome, and Documint makes shows it off. It is an interface to ceramic, providing the tools you need to be able to view, edit and create documents.

Team: CueCannon
Project: CueCannon — Makes live performances into less of a production with Web3 tools. Paper was costly and in short supply during Shakespeare’s days. To learn their lines, actors would be given cue cards with their lines and the lines of the actor performing before them. Inspired by this time-honored rehearsal method, CueCannon was created during ETHDenver 2021 to bring the benefits of a decentralized and transparent blockchain technology to help make the performing arts more accessible and equitable. Requiring no account creation and no intermediaries, a user can find a script for a production and then cast and rehearse the production. Authors can publish their work and earn money with no agent and no transaction fees. Productions can store all collaborators’ notes instantly and transparently — a historical treasure trove in the making. Roles can be automatically cast or cast based on line-equity metrics. Performers can focus on their cues rather than thumbing through the whole script. Spectators can access assistive listening and audio-description content currently available with costly equipment. While inspired by theatre, CueCannon can be used for any production requiring a script, including corporate equity, diversity, and inclusion training.

Team: TeamBadge
Project: Attendee Hardware Badge — Conferences and hackathons have been creating custom hardware based badges for attendees to use, hackers to hack on, gamers to game on, and businesses to integrate with. Why not ETHDenver? This project was designed to enhance the conference experience and motivate the ETHDenver community into exploring and creating hardware based attendee badges. This opens up a ton of possibilities for network connectivity, voluntary tracking, heat mapping, games, scavenger hunts, daily announcements, interaction with vendors (POAP/scanning QR codes), FIO address display, local and regional maps, and business advertisement. This badge was also designed with the ColoradoJam CDA “map/beer/wine offline listing” bounty in mind.

Team: DIGID
Project: DIGID — Your Personal Digital Identity. Student lives are increasingly becoming more digital. We want to create a digital identity system which makes it easier for students to upload their certificates which are essential for their application in Universities and for Universities as well to upload the certificates for the students once they finished a course

Team: Trucol
Project: TruCol — aims at building a decentralized, trust-less platform for test-driven programming development. Utilizing Ethereum smart contracts and a bounty-based system, we hope to contribute to the online programming job market by providing developers the opportunity to contribute regardless of their geosocial circumstances, gender or ethnicity. The presented protocol has the potential to increase market efficiency of new and existing developer bounty programs. This potential is realized by eliminating the need for trust between sponsors and bounty hunters allowing the middle-person to be eliminated from the transactional chain. That way, the protocol creates a free and fair job market within which income inequalities between countries are eliminated. Such a free and fair developer market enables a thriving community of development that can positively stimulate growth of experience and knowledge. This way, we contribute to UN Goal #8, to “Promote sustained, inclusive and sustainable economic growth, full and productive employment and decent work for all”. The emphasis for us lays on inclusive, fair, accessible and decent work for all.

Team: Clement Lakhal
Project: Yogen — Create and trade future swaps on Ethereum Yogen always anyone to create “future swaps”: swap that are scheduled to happen in the future, at a specific date. The idea behind this concept is to be able to speculate on the change of value between a pair of tokens.

For example, let’s take the COMP / AAVE pair with a current price of 1 COMP = 1 AAVE. Alice thinks the value of AAVE is going to increase a lot in the future, so she creates a future swap proposal from 100 COMP to 100 AAVE with a delivery date on the 2021/07/31. On the other side, Bob is more bullish on COMP and is looking to dump his AAVE tokens, so he decides to accept this proposal. On the 2021/07/31, two scenarios are possible:

1. The value of AAVE went up and now 2 COMP = 1 AAVE, Alice is happy, she receives 100 AAVE for the price of 100 COMP (2 times cheaper than the actual market price). On the other hand Bob is disappointed by this trade, he’s going to receive 100 COMP for 100 AAVE (2 times more expensive than the current market price).
2. The other scenario is when the value of COMP increases more than the value of AAVE. Let’s say that 1 COMP = 2 AAVE, Alice made a bad call, because she’ll be receiving 2 times less tokens than the actual market price (100 AAVE instead of 200). Bob is happy in this scenario, because his 100 AAVE tokens are swapped against 100 COMP (instead of 50 COMP at the actual market price).

Additionally, every time a user is going to take a position on a future swap, they will be receiving an NFT token representing their side of the swap (initiator or counterparty). This feature allows a bunch of additional scenarios, such as:

Selling their position when benefits can be made: instead of waiting for the delivery date and the execution of the swap, a user can sell his position to another user.
Limit the loss by selling a negative position: if a position is negative (the other token has its value increasing), a user can sell his position to another user to limit their loss.

Team: Freefund
Project: FreeFund — is a decentralized crowdfunding platform that accepts crypto (DAI) to kickstart projects. We are charging 0% fees and the governance of the overall platform shall be managed by the crowd as a DAO. The current top crowdfunding platforms are all: 1. charging fees, 2. not accepting cryptos, 3. centrally owned, managed and intransparent. We are changing all 3 aspects with FreeFund: 1. 0 fees, 2. projects can be supported in crypto ETH or DAI, 3. DAO governance.

Team: RHS
Project: NFTea Room — is a platform and DAO to supply and decide accurate pricing information for NFTs using a decentralized and democratic voting process. NFTs have seen an explosion of popularity in the last year. Countless companies/projects such as Showtime, Superrare, have popped up to support discovery and initial sale of new NFTs, along with marketplaces like OpenSea to facilitate trading. Some projects even support taking out NFT-backed loans (ex. NFTfi). Unfortunately, there is no platform for accurate pricing information of these NFTs. While some NFTs have their own site (ex. CryptoPunks) that allows holders to place sell orders, there is no information on assets that currently don’t have open orders, or for assets that are changing hands outside of these large platforms. If you’re familiar with virtual video game items, you may know of sites such as backpack.tf (for Steam items) that allow the community to collectively speculate, vote, and decide on the pricing of certain items based on past trades, market dynamics, cultural changes. Accurate pricing information opens up a ton of possibilities — it adds predictability to NFT-backed loans, allows for more efficient items-to-items trading, and is a source of information for those who are in the market for NFTs that may not be actively traded.

clr.fund — QUADRATIC FUNDING RESULTS

Voting made possible thanks to clr.fund.

At ETHDenver, we have made it a point to experiment with and dogfood Ethereum’s emerging tech technologies. In past years, we’ve done things like build a local food truck economy on xDai, distribute NFTs to all our attendees (way before they were cool), and open up our judging to attendees in a DAO.

ETHDenver 2021 was no exception. In a first at ETHDenver, this year we ran the Open Track as a quadratic funding (QF) round with an instance of clr.fund; a quadratic funding protocol, built on zero knowledge proofs, that was born at ETHDenver 2020. We distributed a portion of the $15k prize pool out to each of the judges, and put the remainder into the matching pool. The judges then allocated their funds however they like to the projects they valued most, using this aggregated input to the QF algorithm determine how to allocate the matching pool.

One of the unfortunate consequences of living on the bleeding edge is that sometimes things break or don’t go as planned. While reviewing the QF results after the event, we noticed some things that didn’t look quite right. On deeper inspection, we were able to confirm the issue and tabulate the correct distribution. Here is rundown of what happened:
1. Each recipient is assigned an index when they are registered.
2. There is a maxRecipients variable, which was mistakenly set to 22, rather than 125. (It’s meant to be equal to maxRecipients for the MACI instance, not the maximum number of recipients in the round.)
3. There was a dummy project added to the round initially, so that the judges could sign up and contribute their funds early, before opening judging to the public (because there is a limited number of voter slots in a clr.fund round).
4. When the dummy project was removed and all of the finalists were added, the indexes wrapped around once we got past 22. So Yogen ended up with the same index that the dummy recipient had had.
5. Several of the judges did not reallocate their votes, because they did not have enough time and/or Web3 is hard.
6. Because they shared an index, legitimate votes for Yogen were mingled in with the leftover votes from the dummy project.
7. The result was the heavily skewed, and now obviously inaccurate, prize pool allocation that we tentatively announced on livestream. One thing worth being absolutely clear about is that there is no indication of foul play on Yogen’s part, which is naturally where a lot of people’s minds went when they saw the distribution.
8. (solution) Thankfully we were able to decrypt the votes, void all of the votes for index 3 (the dummy project) prior to the block where Yogen was added to the registry, and then tabulate the correct allocation for the round.

So without further ado, here is the updated prize distribution: