EIP-6932

a working implementation of an EIP-6932 token, the auto deduction of a subscription to a subscriber will be calculated in balanceOf function.

subscription can check for an active subscription of a subscriber using isSubscribedTo function.

ERC6932 uses effectiveBalance and lockedBalance for calculating the token balance of an address, using these variables, total subscribed amount will be calculated and substracted from the effectiveBalance

scenarios

when user subscribes

initially the subscription.amount will be deducted from the user, updating the effectiveBalance, a timestamp will be stored, and further calculations will be evaluated, also stores subscriber info to the subscription

when user cancel subscription

effectiveBalance will be updated for both the subscribers and subscription, cancel the user info from the subscription

when user renews the subscription

same as subscribe, starts from the timestamp for renewal

user does not have balance, then how?

in ERC-6932, subscription amount will be considered in a FIFD ( first-in-first-debit ) pattern, if the total deduction reaches a subscription s1, where user balanceOf is less than the amount or zero, the subscription s1 to subscriber will be considered as void, all evaluation will be in view modifier

git link to the EIP-6932

files overview

this repo contains: ERC6932.sol, ERC6932Receiver.sol and IERC6932Receiver.sol

usage

install

npm i
// or
yarn install

compile

npm compile
// or
yarn compile

contributions

you can contribute any changes or issues regarding eip-6932 files or concept, quick links given below