@sandbox-smart-contracts/giveaway v1.0.0

Signed Giveaways

This is a hardhat project, see https://hardhat.org

The main contract gives rewards in any ERC20, ERC721 or ERC1155 when the backend authorize it via message signing.

The message is composed of:

• A list of signatures. If the contract holt too much value more than one signature is needed. Ideally the systems that sign must be independent.
• A list of claim ids used by the backend to avoid double spending.
• Expiration the expiration time of the message in unix timestamp. After the expiration the message cannot be used anymore.
• From: usually the rewards must be transferred to the contract and this value is address(this), if a strategy with approve and transfer is used this is the address of the source.
• To: the destination address that will get the rewards.
• Claims: A list of union structs (ClaimEntry) that include: token type (ERC20, ERC721, ERC1155, etc), token address and a data field that depending on the token type may have: amount, tokenId, etc.

Usage

yarn hardhat help
yarn hardhat test
yarn hardhat coverage
REPORT_GAS=true yarn hardhat test
yarn hardhat markup

Deployment

This package exports the contract source code, for deployments see: @sandbox-smart-contract/deploy package.