# Brainstorming for the Win!

### Protocols to explore :
#### Auth
1. [Worldcoin](https://worldcoin.org/) - Proof of personhood, Prevent dupilcate accounts
2. [Kinto](https://kinto.xyz/)
3. [Dynamic](https://www.dynamic.xyz/) - multi-chain wallet authentication, allowing users to sign in across different blockchains seamlessly
4. [Web3Auth](https://web3auth.io/)
5. [Privy](https://www.privy.io/)

#### Ecosystem
1. [Arbitrum](https://arbitrum.io/)
2. [Mina Protocol](https://minaprotocol.com/)
3. [Hyperlane](https://www.hyperlane.xyz/)
4. [Celo](https://www.celo.org/)
5. [Mantle](https://www.mantle.xyz/)

#### Verification
1. [Sign Protocol](https://sign.global/)

#### Cryptography
1. [Nethermind](https://www.nethermind.io/)
2. [Inco](https://www.inco.org/)
3. [Phala Network](https://phala.network/)
4. [Fhenix](https://www.fhenix.io/)
5. [Nillion](https://www.nillion.com/)
6. [zCloak Network](https://zcloak.network/)
7. [Lit Protocol](https://www.litprotocol.com/)

#### Others
1. [Blockscout](https://www.blockscout.com/)
2. [The Graph](https://thegraph.com/)
3. [Circle](https://www.circle.com/en/)

#### Messaging
1. [Push Protocol](https://push.org/)
2. [XMTP](https://xmtp.org/)
1. [Axelar](https://www.axelar.network/)

### Previous Winners
#### Scaling ethereum
1. Nillion - [PrivyCal](https://ethglobal.com/showcase/privycal-i1gub),[Identicall](https://ethglobal.com/showcase/identicall-b0904),[EmailEon](https://ethglobal.com/showcase/emaileon-ixsn6)

#### EthOnline
1. Sign protocol - [EcoAttest](https://ethglobal.com/showcase/ecoattest-wd3jg),[Bet-a-Meme](https://ethglobal.com/showcase/bet-a-meme-ctp5f),[UnboundSign](https://ethglobal.com/showcase/unboundsign-rig4c),,[ZeroToHero](https://ethglobal.com/showcase/zerotohero-tarf0),[What are the Odz](https://ethglobal.com/showcase/what-are-the-odz-z59db),[Verifit](https://ethglobal.com/showcase/verifit-dzchy)
2. Lit protocol - [Lit Alpha box](https://ethglobal.com/showcase/lit-alpha-box-3ws9q)
3. Nillion - [Secret Polls](https://ethglobal.com/showcase/secret-polls-9mk3y),[EcoAttest](https://ethglobal.com/showcase/ecoattest-wd3jg),[Sudoku blind app](https://ethglobal.com/showcase/sudoku-blindapp-pxp8z),[FairBET](https://ethglobal.com/showcase/fairbet-ejims),[AI Depression Check](https://ethglobal.com/showcase/ai-depression-check-ic0ea)
4. Mina protocol - [2048 ZKNoid](https://ethglobal.com/showcase/2048-zknoid-f6sir),[Guessᶻᵏ Who?](https://ethglobal.com/showcase/guess-who-p1rv5)
5. Fhenix - [Fugazi](https://ethglobal.com/showcase/fugazi-nxpt2)

#### EthGlobal Brussels
1. Worldcoin - [WorldCare](https://ethglobal.com/showcase/worldcare-9x3z0),[ProofPals](https://ethglobal.com/showcase/proof-pals-vmfza),[Petition Vault](https://ethglobal.com/showcase/petitionvault-pppkx),[Web3Checkout](https://ethglobal.com/showcase/web3-checkout-jfp3h),[Travel protocol](https://ethglobal.com/showcase/travel-protocol-1skiq),[zkWhistleBlower](https://ethglobal.com/showcase/zkwhistleblower-m66e1),[Dewdrop](https://ethglobal.com/showcase/dewdrop-nyhug)
2. Celo - [Net Zero](https://ethglobal.com/showcase/net-zero-msor7)(Multiple wins),[Celosplit](https://ethglobal.com/showcase/celosplit-rkwxa),[Goals](https://ethglobal.com/showcase/goals-m5kr7)
3. Dynamic - [Evm actions](https://ethglobal.com/showcase/evm-actions-2gdki),[Alpha blue](https://ethglobal.com/showcase/alpha-blue-nvi4a),[Decash](https://ethglobal.com/showcase/decash-rvmrf),[Piggy Wallet](https://ethglobal.com/showcase/piggy-wallet-szyeh)(Multiple wins),[Power wagers](https://ethglobal.com/showcase/power-wagers-k56ye)
4. Hyperlane - [Adfhe](https://ethglobal.com/showcase/adfhe-jhwyi),[Net Zero](https://ethglobal.com/showcase/net-zero-msor7),[Tamatebako](https://ethglobal.com/showcase/tamatebako-9rxnm),[DeployAlchemist](https://ethglobal.com/showcase/deployalchemist-8cdm7),[AnimeWars](https://ethglobal.com/showcase/animewars-ip3n9)
5. Inco - [Mincomind](https://ethglobal.com/showcase/mincomind-dh4q4),[Token taticts](https://ethglobal.com/showcase/token-tacticts-j8zn1),[DeGame](https://ethglobal.com/showcase/degame-1xi7j),[Mcdonalds Aggregator](https://ethglobal.com/showcase/mcdonalds-aggregator-nq5xv),[Hiraishin](https://ethglobal.com/showcase/hiraishin-t4ate)
6. Nethermind - [Astral ZK - ML](https://ethglobal.com/showcase/astral-zk-ml-7o0fg),[Onchain guard](https://ethglobal.com/showcase/onchainguard-ki7x6),[Onchain simulations](https://ethglobal.com/showcase/onchain-simulations-opgn0),[Mega blobs](https://ethglobal.com/showcase/megablobs-6hr91),[Just the tip](https://ethglobal.com/showcase/justthetip-7jzds)
7. Nillion - [Melanoma detection](https://ethglobal.com/showcase/melanoma-detection-qefum),[Geotrust](https://ethglobal.com/showcase/geotrust-zd7j3), [Blind Feedback](https://ethglobal.com/showcase/blind-feedback-u298n)
8. Scroll - [Dry](https://ethglobal.com/showcase/dry-2gcc3),[zkWhistleBlower](https://ethglobal.com/showcase/zkwhistleblower-m66e1),[Notar Exchange](https://ethglobal.com/showcase/notar-exchange-dwgr5), [All my read my L1](https://ethglobal.com/showcase/all-my-unicorn-read-on-l1-1v7jk),[Toadnado](https://ethglobal.com/showcase/toadnado-vvkcb)
9. The Graph - [Lemonpay](https://ethglobal.com/showcase/lemonpay-8ozdm), [Defidatadex](https://ethglobal.com/showcase/defidatadex-grqqz),[Friend Fries](https://ethglobal.com/showcase/friend-fries-2qi27),[Rug stop](https://ethglobal.com/showcase/rugstop-qoazr),[Adfhe](https://ethglobal.com/showcase/adfhe-jhwyi),[SwapX](https://ethglobal.com/showcase/swapx-z3der)
10. Web3Auth - [Ghostpay](https://ethglobal.com/showcase/ghostpay-gt4e8),[Goals](https://ethglobal.com/showcase/goals-m5kr7),[BraceBuddy](https://ethglobal.com/showcase/bracebuddy-ph10y), [Fasttrackpay](https://ethglobal.com/showcase/fastrackpay-r4cyr), [Lablr](https://ethglobal.com/showcase/lablr-1s6tg)
11. Fhenix - [PetID](https://ethglobal.com/showcase/pet-id-86oi1),[Just the tip](https://ethglobal.com/showcase/justthetip-7jzds),[Adfhe](https://ethglobal.com/showcase/adfhe-jhwyi)
12. Privy - [Buzz](https://ethglobal.com/showcase/buzz-kvzt0)

#### EthGlobal Sydney
1. WorldCoin - [Freema](https://ethglobal.com/showcase/freema-x0nf0),[Cache coherence](https://ethglobal.com/showcase/cache-coherence-1nq6z), [FitwifFrens](https://ethglobal.com/showcase/fitwiffrens-2zo8n),[Gimmemybloodymoney](https://ethglobal.com/showcase/gimmemybloodymoney-vi6xx),[The Rizz camp](https://ethglobal.com/showcase/the-rizz-camp-1juqr),[Free the Aid](https://ethglobal.com/showcase/free-the-aid-etztn), [Relief link](https://ethglobal.com/showcase/relief-link-mbfmy), [0xPoll](https://ethglobal.com/showcase/0xpoll-4j05w)
2. Nethermind - [Learnr idle mining](https://ethglobal.com/showcase/learnr-idle-mining-7pscw),[Zeke](https://ethglobal.com/showcase/zeke-xarwm),[Gohan Layer](https://ethglobal.com/showcase/gohan-layer-ffnsd)

#### EthGlobal London
1. Arbitrum - [Geocab](https://ethglobal.com/showcase/geocab-6rdio),[Gogh](https://ethglobal.com/showcase/gogh-3rqb2),[Monitrum](https://ethglobal.com/showcase/monitrum-mctia), [Re:public](https://ethglobal.com/showcase/re-public-4en9r),[Votecast](https://ethglobal.com/showcase/votecast-5cp59),[Chillibites](https://ethglobal.com/showcase/chillibites-z4h15),[ddMesh](https://ethglobal.com/showcase/ddmesh-92azb),[Not so secret agent](https://ethglobal.com/showcase/not-so-secret-agent-vmnas)
2. Nethermind - [ZKPA](https://ethglobal.com/showcase/zkpa-xey5f),[zeritfy](https://ethglobal.com/showcase/zertify-b97at),[FairArboooors](https://ethglobal.com/showcase/fairarbooors-uq81v),[Blobpreconfauction ](https://ethglobal.com/showcase/blobpreconf-auction-qfdco),[SPC wallet service](https://ethglobal.com/showcase/spc-wallet-service-xn68p),[Subhub](https://ethglobal.com/showcase/subhub-q0jrr),[Byzantine Finance](https://ethglobal.com/showcase/byzantine-finance-2y0ot),[Rpc provider AVS](https://ethglobal.com/showcase/rpc-provider-avs-s6urm), [Not so secret agent](https://ethglobal.com/showcase/not-so-secret-agent-vmnas),[Demokratia](https://ethglobal.com/showcase/demokratia-c7bab),[Tensor royale](https://ethglobal.com/showcase/tensor-royale-bsezu),[Trust protocol](https://ethglobal.com/showcase/trust-protocol-3wih5),[Momentor](https://ethglobal.com/showcase/momentor-pngy4),[Votecast](https://ethglobal.com/showcase/votecast-5cp59),[panDa](https://ethglobal.com/showcase/panda-jk4mc) , [Suave MPC](https://ethglobal.com/showcase/suave-mpc-16pmz),[super Parallel](https://ethglobal.com/showcase/superparallel-kngdn),[Super smash bears VR](https://ethglobal.com/showcase/super-smash-bears-vr-hkz03),[Darkpool](https://ethglobal.com/showcase/darkpool-s9oii),[Mystic DEX](https://ethglobal.com/showcase/mystic-dex-me14f),[Ziritas](https://ethglobal.com/showcase/ziritas-efc8k),[Pixel Cast](https://ethglobal.com/showcase/pixelcast-k6qcx), [Tensor royale](https://ethglobal.com/showcase/tensor-royale-bsezu),[Blocktalk](https://ethglobal.com/showcase/blocktalk-azd14)
3. Worldcoin - [Votelik Pollerin](https://ethglobal.com/showcase/votelik-pollerin-u0dcs),[Vota protocol](https://ethglobal.com/showcase/vota-protocol-qxf3z), [not so secret agent](https://ethglobal.com/showcase/not-so-secret-agent-vmnas),[Fast grant](https://ethglobal.com/showcase/fastgrant-x1mm4), [Synapsic](https://ethglobal.com/showcase/synapsic-i2r2o),[Anonvote](https://ethglobal.com/showcase/anonvote-uc7w0), [WNS.vote](https://ethglobal.com/showcase/wns-vote-cw6na)
4. Celo - [Chipz](https://ethglobal.com/showcase/chipz-945wy),[Chaincart](https://ethglobal.com/showcase/chaincart-fq0rg), [Geodash](https://ethglobal.com/showcase/geodash-9ian6),[Mini opera links](https://ethglobal.com/showcase/mini-opera-links-xk3q7)
5. Hyperlane - [Token Town](https://ethglobal.com/showcase/tokentown-7a1hp),[HyperDeploy](https://ethglobal.com/showcase/hyperdeploy-pba5f),[Apeful](https://ethglobal.com/showcase/apeful-5avb8),[Chillibites](https://ethglobal.com/showcase/chillibites-z4h15),[Mystic Dex](https://ethglobal.com/showcase/mystic-dex-me14f),[Ultra lane](https://ethglobal.com/showcase/ultralane-65brg),[Luffy protocol](https://ethglobal.com/showcase/luffy-protocol-t6mu4),[Re:public](https://ethglobal.com/showcase/re-public-4en9r)
6. Dynamic - [DynOS 95](https://ethglobal.com/showcase/dynos-95-9n57a),[Gitpaid](https://ethglobal.com/showcase/gitpaid-cemw9),[Fluidpay](https://ethglobal.com/showcase/fluidpay-tpqvz),[Nounsmon](https://ethglobal.com/showcase/nounsmon-e87re),[Shadefi](https://ethglobal.com/showcase/shadefi-08jjj)
7. Fhenix - [Zver fhe zkverifier](https://ethglobal.com/showcase/zver-fhe-zkverifier-6dmq3) ,[Shadefi](https://ethglobal.com/showcase/shadefi-08jjj),[Mystic DEX](https://ethglobal.com/showcase/mystic-dex-me14f)

### Ideas for building
- TEEs and MPC ([link](https://equilibrium.co/writing/do-all-roads-lead-to-mpc))
- What is our potential Project ?
- Involves cryptography (MPC,ZK,FHE)
- Real world problem vs Game vs Web2 to Web3?
- Feedback idea: Get feedback from users and work on the data.
- Private Set intersection(Find something in common to talk about)
- **Secure Personal Finance App**: A budgeting tool that aggregates spending data from multiple accounts to provide insights while keeping individual transactions confidential.([Chaincart](https://ethglobal.com/showcase/chaincart-fq0rg))
- **Secure Data Marketplace**: A platform where data owners can sell insights derived from their datasets while ensuring that the raw data remains confidential through MPC.
- **Personalized Recommendation System:** A service that helps users discover products or content based on collective preferences while keeping individual data private.([Adfhe](https://ethglobal.com/showcase/adfhe-jhwyi))
- **Secure Charity Donation Platform**: An application that allows donors to contribute to charitable causes while keeping their identities and donation amounts private from the organizations receiving the funds.([Free the Aid](https://ethglobal.com/showcase/free-the-aid-etztn))
- **Privacy-Preserving Public Opinion Polling:** A tool that enables organizations to conduct polls or surveys while protecting respondent identities and sensitive information.([Secret Polls](https://ethglobal.com/showcase/secret-polls-9mk3y),[Anonvote](https://ethglobal.com/showcase/anonvote-uc7w0),[Blind Feedback](https://ethglobal.com/showcase/blind-feedback-u298n))
- **Secure Talent Pool Management**: An app for recruitment agencies to collaborate on candidate data and job placements while safeguarding candidates’ personal information.([Mcdonalds Aggregator](https://ethglobal.com/showcase/mcdonalds-aggregator-nq5xv))
- **Privacy-Preserving Fitness Tracking**: An app where friends can share workout data and challenges without revealing personal health metrics, fostering a supportive fitness community. ([Verifit](https://ethglobal.com/showcase/verifit-dzchy),[Goals](https://ethglobal.com/showcase/goals-m5kr7),[Power wagers](https://ethglobal.com/showcase/power-wagers-k56ye), [FitwifFrens](https://ethglobal.com/showcase/fitwiffrens-2zo8n),[Geodash](https://ethglobal.com/showcase/geodash-9ian6))
- **Secure Family Budgeting App**: A tool that allows family members to collaboratively manage finances, track expenses, and set budgets without exposing individual spending habits.([Piggy Wallet](https://ethglobal.com/showcase/piggy-wallet-szyeh))
- **Privacy-Conscious Travel Buddy Finder:** An app that matches travelers with similar interests while keeping personal details private, allowing users to connect without revealing their identities upfront.
- **Anonymous Support Groups**: A secure platform for individuals dealing with niche issues (like specific mental health challenges or hobbies) to share experiences and advice without revealing their identities.([The Rizz camp](https://ethglobal.com/showcase/the-rizz-camp-1juqr))

### Project Idea 1
A social Dapp for connecting users on the basis of shared interests without exposing the uncommon interests using PSI. Allowing for an organic connection to establish.

- A privacy preserving Omegle chat?
- Users input their secret interests
- Could be based on a hierarchy, for e.g: Movies -> Comedy -> 3 idiots
- Scores can be calculated on the basis of interests giving more emphasis the deeper we go down the hierarchy.
- Users are anonymous
- Users can initiate a conversation once they connect with someone based on a certain threshold score
- Can use an updatable PSI
- Potential user : Can be a platform for counsellors to interact with anonymous clients and get paid for their service

**Open question**:
How do we decide who to perform PSI with?
- filter via some certain keywords(gender, age bracket,primary interests,secondary interest, etc) and perform PSI on the filtered list?
- perform PSI on the filtered set parallelly?

How to identify people i have matched with in the past?

**Potential protocols for building** : Worldcoin,Dynamic,XTMP,Push protocol,Nillion,

**User flow**
Profile generation
1. Log in - generate wallet(Key pair)
2. Authentication - Proof of personhood
3. Input data - keywords(for filtering),Interests
4. Send info to other nodes, making them aware of existence (ID,keywords) - can update ID after every interaction

Processing
1. Retrieve (ID,Keyword) of other users
2. Scenarios for performing PSI:
- Perform PSI if the List changes after an epoch : An old set is updated,New joinee
- Or perform at will by comparing personal list with publically updated list

Messaging

### Project Idea 2
[Build library using Nillions Nada language.](https://hackmd.io/CqaFJQSCSqygP1-5rfxWDQ)
1. [Random number generation](https://docs.nillion.com/limitations#nada-language-programs-and-inputs)

### Project Idea 3
Build a game using RNG library mentioned in Project Idea 2

1. Wordle [learn wordle](https://www.wikihow.com/Play-Wordle)

* wordle:
1. list a number of words (e.g. 10k words) of same length (preferably 5 or 6)
2. randomly choose a word from the list for each game, using RNG
3. reward the player as per the number of guesses he/she required to complete the challenge

* game flow:
5. login
6. authentication
7. receive a random challenge (using RNG)
8. submit your solution (multiple rounds with a limit)
9. if submitted correct solution, receive a reward as per the number of rounds

### Project Idea 4
[Anonymous Support Group DApp](https://hackmd.io/kzk5QuHARJifvL1AazZUWA)