ERC-1404 Restricted Token Features

Vestascan deploys a production-ready, highly configurable implementation of the ERC-1404 standard. It is designed specifically for Security Tokens, Restricted Assets, and Compliance-Heavy Tokens.

It allows issuers to enforce complex transfer restrictions (Whitelisting, Lockups) while remaining compatible with standard ERC-20 wallets and exchanges.

1. Compliance Core (ERC-1404)

Atomic Whitelisting: Transfers are only successful if both the Sender AND the Receiver are whitelisted.
Pre-Flight Checks: Wallets can query detectTransferRestriction to see if a transfer will fail before sending it, preventing wasted gas.
Modular Architecture: The compliance logic can be upgraded by pointing to an external IComplianceModule (e.g., for future ERC-3643 compatibility) without migrating the token.

2. Vesting & Lockups

Time-Based Locking: Administrators can enforce lockup periods on specific users.
Granular Control: You can whitelist a user with immediate access or with a specific unlock timestamp.
Enforcement: Use setReleaseTime(user, timestamp) to manage locks dynamically.

3. Role-Based Access Control

The contract separates duties to ensure security:

DEFAULT_ADMIN_ROLE (Super Admin):
- Can bypass restrictions (if Revocable).
- Can Manage Roles (grant/revoke).
- Can Mint/Burn (if enabled).
- Can Rescue stuck tokens.
COMPLIANCE_ROLE (Compliance Officer):
- Can Manage Whitelist (addToWhitelist, removeFromWhitelist).
- Can Set Lockups.
- Limit: Hardcoded limit of 5 Compliance Officers for security.
PAUSER_ROLE:
- Can trigger the Emergency Stop (pause).

4. Lifecycle Configuration (Immutable)

These flags are set once at deployment and cannot be changed, providing trust to investors.

Feature	Flag	Description
Minting	`isMintable`	If `true`, Admin can print new tokens post-deployment. If `false`, supply is fixed forever.
Burning	`isBurnable`	If `true`, Users can redeem (burn) their tokens, and Admins can seize (burn) tokens for compliance.
Revoking	`isRevocable`	If `true`, Admin can force-transfer tokens from any wallet (e.g., lost keys, legal seizure). If `false`, this is permanently disabled.
Max Supply	`cap`	If Minting is enabled, this Hard Cap prevents inflation beyond a guaranteed limit.

5. Safety & Operations

Emergency Stop (Pausable): Freeze all transfers in the event of a critical security threat.
Token Rescue: Admin can recover any ERC-20 tokens accidentally sent to the contract address.
Bulk Whitelisting: batchAddToWhitelist allows adding up to 200 investors in a single transaction to save Gas.