Blue is a framework for organisations to integrate their bluetooth devices to the blockchain and an engagement tool for organisations to incentivise their customers through gamification, tokens, and collectibles.

Simply:

• Connect - your bluetooth device
• Collect - daily incentivised token rewards
• Engage - by using tokens to purchase accessories

A reference implementation of Blue is included as part of the Google x Moralis 2022 Hackathon. We connect all OralB Bluetooth Toothbrushes to the blockchain and incentivise users to brush twice a day to collect 'BLUE' tokens to spend on the marketplace.

Users can be further incentivised through their actions

• Better brushing can reward tokens (we capture a lot of interesting statistics against a toothbrush)
• Streaks can reward tokens (continuously brushing twice a day for a month)
• Consistently brushing 2 minutes twice a day
• We can apply models of good brushing behavior against a users' toothbrush profile to evaluate and reward

Each registered user is minted a FAIRY NFT which they can interact with by purchasing and equipping accessories from the marketplace.

Users redeem BLUE ERC20 tokens to be spent on purchasing accessories for their fairy.

At the heart of Blue is a set of tokens and collectibles that are used to encourage engagement.

• Blue20: this is the token that is spent by users on the platform. These can only be redeemed twice a day by connecting their bluetooth device to the Dapp
• Blue1155: this is a set of accessories that a user can purchase. There are a total of 192 unique accessories that can be used to modify the Collectible appearance. Each accessory costs 2 BLUE20 tokens
• Blue721: this is the Collectible Fairy that is minted for each new user.

Some cool features:

• Equipped 1155 Accessories follow the Fairy. This means if a user equips all accessories for a fairy and sells the fairy the new owner can un-equip the accessory and take ownership
• Blue20 tokens are redeemed twice per day and only when users connect their bluetooth device. Brush your teeth and earn some tokens!
• Dynamic Metadata and images; as a user purchases and equips their accessories the NFT is regenerated with the new equipment. The colours and accessories are stored in the collectible on-chain
• Access control on-chain: sybil attacks can be mitigated using on-chain access controls limited by 'Know Your Toothbrush'
• All Smart Contracts are fully unit tested

To achieve the results we had to combine a number of Moralis products

• Streams API: when a user mints or equip/unequip tokens an event is fired which is captured by the application (blue-api). These events result in the NFT being re-generated
• EVM API: we used this to read transactional data from the blockchain, and retrieve balances for ERC1155 and ERC20 tokens
• NFT API: the NFT API was used to retrieve and manage the FAIRY collectible
• Auth API: we experimented with the Auth API and integrated it; however due to time limits reached we could not integrate Gasless Transactions through Moralis <> Biconomy and so the Auth API (while working) cannot mint tokens
  • Web3 Auth
  • Sign in with Metamask
• Firebase to store the generated NFT images

I was pleasantly surprised by how well all the APIs worked. The AHA moment I had was when I built this platform and needed more functionality. Moralis ALWAYS had exactly what I needed.

A few things that I would have loved to see in the final product but ran out of time

• Gasless transactions with Biconomy and Moralis. This is key to user adoption, and would be a major priority. Imagine OralB or Colgate adopting this; their users should not worry about gas costs
• Social and Web3 AUTH login. This is supported now, but because of gas costs its not really useable
• Mobile application: originally I had planned to build a mobile app. This is key because web bluetooth api is horrible! Its not really supported
• Decentralised Finance integration: with only 2 tokens a day it would take a year to buy all the accessories. It would be trivial to set up a BLUE/USDC pair on the DEX for trading
• Business Development: need partners to show this to ORAL B/Colgate; but it also works with any bluetooth device
• Building models of good tooth brushing behaviours and use it to encourage users to brush better.
• Collectibles Utility and token-gating