smartcontractkit / chainlink

node of the decentralized oracle network, bridging on and off-chain computation
https://chain.link
Other
7.06k stars 1.72k forks source link

Chainlink - Connect Smart Contracts to Pricing Reference Contracts (10 winners of $250 in LINK) #3139

Closed PatrickAlphaC closed 4 years ago

PatrickAlphaC commented 4 years ago

Prize Title

Chainlink Reference Data Contract Bounty

Prize Bounty

$250 * 10 winners (in Chainlink token)

Hackathon

Unitize

About Chainlink

Chainlink is a decentralized oracle network that enables smart contracts to securely access off-chain data feeds, web APIs, and traditional bank payments. It is well known for providing highly secure and reliable oracles to large enterprises ( Google, Oracle, and SWIFT ) and leading smart contract development teams such as Polkadot/Substrate, Synthetix, Loopring, Aave, OpenLaw, Conflux, and many others.

Challenge Description

Any project using a Chainlink reference data contract contract qualifies. Adding a simple Chainlink anchor (sanity check on centralized oracle sources), and making a state change on your project is enough to submit for this bounty.

Hackers are challenged to make something powerful, fun, and applicable in the defi space, or any other creative use cases. You can always check out our 44 hackathon ideas to find some inspiration.

Submission Requirements

Submissions that successfully deploy a contract to a testnet that calls the reference contract and makes a state change in interesting ways will be eligible. Please include in your submission:

  1. A video demoing/describing your video.
  2. Your source code.
  3. Please submit your project to the gitcoin site prior to 23:59 UTC July 27th You can use any testnet where the reference contracts are live.

Judging Criteria

Each project will be judged on:

  1. Technical Difficulty
  2. Successful Implementation
  3. Applicability
  4. Creativity Judging will commence at the end of the hackathon (July 27th)

Winner Announcement Date

We will announce the winner of this and every bounty July 31th (the friday after the hackathon ends)

Documentation/Tutorials Chainlink reference data contract Create a Chainlinked project (truffle/node.js) Create your own adapter to get custom data

Inspiration from Past Hackathons ETH Denver Chainlink Virtual Hackathon ETH New York ETH Paris ETH Denver

Social Channels

gitcoinbot commented 4 years ago

Issue Status: 1. Open 2. Started 3. Submitted 4. Done


Work has been started.

These users each claimed they can complete the work by 6 minutes ago. Please review their action plans below:

1) sunnyrk has started work.

I will create a dapp which will interact with pricing reference contracts. 2) viraj124 has started work.

A marketplace where users can trade erc20 for fiat tokens 3) vinhyenvodoi98 has started work.

This game bets on the next price of ETH either up or down or unchanged. 4) x5engine has started work.

Link Contract Dapp 5) nghianv-1868 has started work.

Wib is an idea based on a Weather Oracle of Chainlink. It allows users to purchase insurance at a place at any time (as long as 10 days after the current date). Perfect for event organizers who want to buy insurance for their events. All operations will be performed automatically via smart contract. From creating a contract, to checking insurance conditions and paying damages. No more thinking about cheating as human-operated systems. 6) vbstreetz has started work.

Prediction market 7) abdel-az has started work.

the objectif for me is to create a dapp which will interact with pricing reference contracts 8) yuval-k has started work.

Allows two parties use the chain for for payment of off chain service. The problem of trust is solved by having the payment approved by trusted 3rd party. 9) cryptowhaler has started work.

Have been reading the chainlink docs and trying to use it with Goggle Pay fiat wallet. Still not complete. Will submit whatever i have been able to make before the deadline. 10) azizyano has started work.

stable coin using chainlink reference 11) janus has started work.

I am building a financial system 12) drnguyen2525 has started work.

Cryptophecy, which stands for "Cryptocurrency Prophecy", is a simple bet game developed using Chainlink reference data contract at the backend side and React for the Web UI interaction. Gamblers can come to play whenever and as many times as they want by guessing whether the Ethereum exchange rate after 1 hour will raise, drop, or be unchanged and then betting an arbitrary amount of ETH (at least 0.01 ETH) for that prediction. If the actual exchange after 1 hour since the moment their requests were submitted matched their guess, the gamblers would be rewarded an amount of 2.9 times their stake. Otherwise, they receive nothing. 13) pappas999 has started work.

Interact with your Chainlinked Smart Contracts without needing to pay LINK or ETH/GAS, let someone else pay for it and then send you an invoice in $. The invoice calculation uses the price reference contracts to calculate the $ value of ETH & LINK used by the contract 14) gauddel has started work.

SoccerBet is a platform where you can bet on futur match between soccer teams in the big 5 national competition in europe. 15) coderrick has started work.

Crypto Cards is a Blackjack game powered by Chainlink inbound oracles and the Ethereum Blockchain. This DApp allows players to wager our Chip ERC20 token which can be burned and cashed out as DAI. 16) colinbowen has started work.

Piggy Savings is a Ethereum DApp to help you save towards your goals. 17) usman75 has started work.

Lazy Trader bot is an automated ETH to DAI swapping bot using ChainLink price feed data reference. 18) sudeepb02 has started work.

capitalETH is a Dapp which you can use to invest automatically in cryptocurrencies in a systematic way. A user creates a goal plan, and the amount in stable coins is deducted and swapped for destination token. Two types of plan are available, FixedPlans and Dynamic Plans. Fixed plan invests after every N number of days. Dynamic Plan uses Chainlink to determine the price action of ETH, and invests only if the price of ETH falls below a certain percentage. 19) senarma has started work.

an dApp to mint BRLX, a Real stable using the chainlink oracle to get the exchange rate between Dolar(USD) and Real(BRL) 20) mukesh0000 has started work.

I will work on the prediction market

Learn more on the Gitcoin Issue Details page.