The Nectar Token Contracts

The Nectar Token (NEC) is based on the MiniMe framework, with details available here: https://github.com/Giveth/minime . The token also includes some additional functionalities, with most of the logic built into the NectarController contract. This controller contract manages issuance and reward logic, as well as whitelisting of registered token holders to allow only registered members to transfer and receive the tokens.

A summary of the design choices and purpose of the Nectar token is available here:

• Summary blogpost about the token roadmap

• Original whitepaper explaining the purpose and functionality of the token

Deploy History

13th February - NEC deployed - commit fc5e6d575830ee48f0a54449e32d9dc5992f6997

13th February - Nectar Controller v1.0.0 deployed - commit fc5e6d575830ee48f0a54449e32d9dc5992f6997

30th March - Nectar Controller v2.0.0 deployed - commit latest

12th April - upgradeContoller used to switch control to v2.0.0

Contracts summary

Token:

• NEC.sol: Main contract for the token. Derives MiniMeToken. NEC creates the initial Ethfinex token balance, and implements token burning functionality.
• MiniMeToken.sol: ERC20 Token implementation with minor additions compared with the original MiniMeToken. These additions are:

Controller:

• NectarController.sol: This will be set as the controller of NEC after deployment of the token contract. Contributed fees can be sent to this contract, and new tokens are generated in return. The controller also implements OnTransfer, OnApprove, and OnBurn which contains logic triggered whenever transfers, approvals, or burns happen in the token contracts.
• Whitelist.sol: Simple contract which allows the registration and deregistration of token holders from the scheme, as well as authorisation of accounts or contracts who are authorised to contribute fees to the Controller contract and receive tokens in return.

Deployment and set-up

1. Deploy MiniMeTokenFactory
2. Deploy NEC passing it the address of the newly deployed token factory contract.
3. Deploy NectarController, passing it the address of the newly deployed NEC token contract.
4. Call changeController on the NEC token contract, passing it the address of the NectarController contract.

ABIs

NEC:

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NectarController:

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Bug bounty

A bug bounty will be run continuously, offering rewards for any security vulnerabilities found where detailed instructions to recreate the bug are provided. Details of this bounty program will be announced on blog.ethfinex.com