evm-token - Dokrypt

Overview

A comprehensive token project template with four production-grade contracts covering the full token lifecycle: creation, distribution via vesting, yield via staking, and secure management via multisig.


Difficulty	Intermediate
Category	Token
Chains	Ethereum
Services	None
License	Apache-2.0

Quick Start

dokrypt init my-token --template evm-token
cd my-token
dokrypt up

Generated Files

my-token

dokrypt.yaml

foundry.toml

README.md

contracts

token

ManagedToken.sol

vesting

VestingSchedule.sol

staking

StakeRewards.sol

multisig

MultiSig.sol

test

token

ManagedToken.t.sol

vesting

VestingSchedule.t.sol

staking

StakeRewards.t.sol

multisig

MultiSig.t.sol

scripts

deploy-token.js

setup-vesting.js

Contracts

ManagedToken.sol

Full-featured ERC-20 with owner-controlled minting, burning, and emergency pause. Constructor:

constructor(string memory name, string memory symbol, uint256 initialSupply)

Functions:

Function	Access	Description
`transfer(to, amount)`	Public	Transfer tokens (reverts when paused)
`approve(spender, amount)`	Public	Approve spending
`transferFrom(from, to, amount)`	Public	Transfer on behalf
`mint(to, amount)`	Owner	Mint new tokens
`burn(amount)`	Public	Burn your own tokens
`pause()`	Owner	Pause all transfers
`unpause()`	Owner	Resume transfers
`transferOwnership(newOwner)`	Owner	Transfer ownership

Events: Transfer, Approval, Paused, Unpaused, OwnershipTransferred

VestingSchedule.sol

Linear token vesting with configurable cliff and duration. Constructor:

constructor(address _token)

Schedule struct:

struct Schedule {
    address beneficiary;   // Recipient
    uint256 totalAmount;   // Total tokens to vest
    uint256 released;      // Tokens already released
    uint256 start;         // Vesting start timestamp
    uint256 cliff;         // Cliff end timestamp
    uint256 duration;      // Total duration (seconds)
    bool revoked;          // Cancellation status
}

Functions:

Function	Access	Description
`createSchedule(beneficiary, amount, start, cliffDuration, duration)`	Owner	Create vesting schedule
`release(scheduleId)`	Public	Release vested tokens to beneficiary
`revoke(scheduleId)`	Owner	Cancel schedule, return unvested tokens
`releasableAmount(scheduleId)`	View	Calculate currently vested amount

Vesting Logic:

Before cliff: 0 tokens are vested
After cliff: tokens vest linearly over the remaining duration
Formula: vestedAmount = totalAmount * (currentTime - start) / duration

Events: ScheduleCreated, TokensReleased, ScheduleRevoked

Use dokrypt chain time-travel to test vesting schedules without waiting. For example, dokrypt chain time-travel 180d jumps past a 6-month cliff.

StakeRewards.sol

Synthetix-style proportional staking rewards. Users stake tokens and earn rewards proportional to their share of the total stake. Constructor:

constructor(address _stakingToken, address _rewardsToken)

Functions:

Function	Access	Description
`stake(amount)`	Public	Stake tokens
`withdraw(amount)`	Public	Unstake tokens
`getReward()` / `claimReward()`	Public	Claim accumulated rewards
`exit()`	Public	Withdraw all + claim rewards
`setRewardsDuration(duration)`	Owner	Set reward period length
`notifyRewardAmount(amount)`	Owner	Start/refill reward distribution
`earned(account)`	View	Check pending rewards
`rewardPerToken()`	View	Current reward per staked token

Reward Calculation:

rewardRate = rewardAmount / duration
rewardPerToken += rewardRate * timeDelta / totalStaked
earned = stakedBalance * (rewardPerToken - userPaidPerToken) + storedRewards

Events: Staked, Withdrawn, RewardPaid, RewardsDurationUpdated

MultiSig.sol

M-of-N multisignature wallet for secure fund management. Constructor:

constructor(address[] memory _owners, uint256 _required)

_owners: Array of owner addresses
_required: Minimum confirmations needed to execute

Transaction struct:

struct Transaction {
    address to;           // Target address
    uint256 value;        // ETH value
    bytes data;           // Calldata
    bool executed;        // Execution status
    uint256 confirmations;// Confirmation count
}

Functions:

Function	Access	Description
`submitTransaction(to, value, data)`	Owner	Submit a new transaction
`confirmTransaction(txId)`	Owner	Confirm a pending transaction
`revokeConfirmation(txId)`	Owner	Revoke your confirmation
`executeTransaction(txId)`	Owner	Execute if enough confirmations
`getTransactionCount()`	View	Total transaction count
`getTransaction(txId)`	View	Get transaction details

Events: Deposit, Submission, Confirmation, Revocation, Execution, ExecutionFailure The wallet accepts ETH via the receive() function, emitting a Deposit event.

Deployment

Deploy Token

TOKEN_NAME="MyToken" TOKEN_SYMBOL="MTK" INITIAL_SUPPLY="1000000" \
  npx hardhat run scripts/deploy-token.js --network localhost

Environment variables:

Variable	Default	Description
`TOKEN_NAME`	—	Token name
`TOKEN_SYMBOL`	—	Token symbol
`INITIAL_SUPPLY`	—	Initial supply (whole tokens)
`RPC_URL`	`http://localhost:8545`	Chain RPC
`PRIVATE_KEY`	—	Deployer private key

Setup Vesting

npx hardhat run scripts/setup-vesting.js --network localhost

​Overview

​Quick Start

​Generated Files

​Contracts

​ManagedToken.sol

​VestingSchedule.sol

​StakeRewards.sol

​MultiSig.sol

​Deployment

​Deploy Token

​Setup Vesting

Overview

Quick Start

Generated Files

Contracts

ManagedToken.sol

VestingSchedule.sol

StakeRewards.sol

MultiSig.sol

Deployment

Deploy Token

Setup Vesting