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About Us
Continuum is the best way to share and learn the creative business. Users can earn tokens and achievements as they take courses and watch educational content. They can optimize their learning by organizing their content, taking notes and quizzes, and participating in discussions with creators and community members. We recently launched on Product Hunt and received #3 Product of the Day.
Description
Continuum is looking for a web3/blockchain developer to pioneer our development of various web3 functionality within our social education platform. This is a full-time, remote position. You will be responsible for:
- Designing and developing web3 features within our platform.
- Helping to create our token economy by building mechanisms to reward and transfer ERC-20 tokens.
- Create ERC-1155 NFT contracts, along with a mechanism to reward them to users.
- Display NFTs and token balances within our app.
- Collaborating with cross-functional stakeholders such as the CEO, Creative Director, etc.
- Organizing and tracking tasks through issue tracking software.
Required Qualifications:
- React Native (must-have)
- ethers.js or web3.js
- Truffle or Hardhat
- Solidity
Nice to Have:
- Expo
- Node.js
What is ERC20 example?
ERC20 is a standard for fungible tokens on the Ethereum blockchain
Here is an example of an ERC20 token
Let's say we create a new ERC20 token called ABC Token with a total supply of 1,000,000 tokens
Each token will be divisible up to 18 decimal places
To implement the ERC20 standard, we will need to define several functions, including:
- balanceOf(address): Returns the token balance of a specific address.
- transfer(address to, uint256 value): Transfers tokens from the caller's address to the specified address.
- approve(address spender, uint256 value): Approves a specific address to spend a certain amount of tokens on behalf of the caller.
- allowance(address owner, address spender): Returns the amount of tokens approved by the owner that the spender can transfer.
- User1 owns 500,000 ABC Tokens.
- User2 wants to buy 100 ABC Tokens from User1.
- User1 approves User2 to spend up to 100 ABC Tokens on her behalf.
- User2 calls the transferFrom() function with User1's address, his own address, and the value of 100 tokens.
- The transferFrom() function deducts 100 tokens from User1's balance and adds them to User2's balance.