SunNetwork-v1.5.1

This version aim of abolishing SolidityNode and using FullNode to replace SolidityNode functionality.
The main modifications are as below.

1. Add topic "solidityevent" and "soliditylog" sent through event-plugin.
2. Modify listening topic of oracle from "contractevent" to "solidityevent".

"solidityevent" and "soliditylog" should be add to "event.subscribe.topics" in config file.
This update is not a hard fork version.

SunNetwork-v1.5.0

This version is mainly based on the java-tron3.7 for code refactoring.

The main new features:

1. Add isContract instruction to virtual machine
2. Smart contract adds parallel erification function
3. Smart contract adds multiple verification function
4. Allow constantCall to modify storage
5. Smart contract transfer automatically activates non-existent accounts and prohibits ordinary transfers to transfer Trx and trc10 to smart
   contract addresses
6. Energy limit dynamic adjustment

Add four proposals:

1. getAdaptiveResourceLimitMultiplier
2. getAllowTvmSolidity059
3. getAdaptiveResourceLimitTargetRatio
4. getForbidTransferToContract

SunNetwork-v1.0.3

DAppChain

New Features:
#260

• Add new topic to implement event services.

Smart Contract

New Features:
#270 #276

• Support uint256 for depositTRC20.
• Support contract upgrade using delegate call.
• Add reference contract logic to support contract migration.

Sun-sdk

Bug Fix:

• Fix deposit fee issue

Oracle

New Features:
#270

• Add contract migration logic

SunNetwork-v1.0.2

Notice:

• This update requires to change the config file. Please check here.

DApp-chain

• New Features:

#246 Add a proposal to update gateway contract version 1.0.2 on DAppChain.
#236 Add a proposal to increase maximum active witness number.

Oracle

• Changes:

#239 Sync contract origin address info from TRON Network assets to DAppChain when mapping TRC20/TRC721.

Gateway Contract

• New Features:

#239 Add function to update TRC20/TRC721 contract origin address.

SunNetwork-v1.0.1

DApp-chain

• New Features:

#218 Add version for smart contract
#192 Implement a multi-sign function to speed up transaction validation in smart contract.

• Changes:

#214 Reduce energy cost and optimize logic for smart contract .
#185 Change service fee.

Oracle

• New Features:

#196 Add auto retry mechanisms for failed cross-chain interactions in oracle node.

SunNetwork-v1.0.0

Sun Network Plan is the expansion plan for TRON main network ecosystem, including smart contract application oriented side-chain(DAppChain), cross-chain communication and other expansion projects.

DAppChain is the first product of Sun-network Project. It is compatible with TRON main-chain, and fully support smart contract with low consumption, high security and high efficiency.

Dapp-chain

Features:

Side-chain:

• Optimized lots of legacy logic.
• Implement reward adjust mechanism.

Optimize the latest java-tron (version 3.6) to support side-chain model:

• Implement 2 special token mint instructions for cross-chain deposit operations in TVM layer.
• Support new energy model for gateway contract.
• Remove trc10 token creation component.
• Remove exchange component.
• Changed transaction signature logic to avoid replay attack.

New incentive layer for sidechain:

• Introduce new concept "fund" to ecosystem incentive layer.
• Provide new system contract FundInject for donate TRX to witness incentive pool.
• Implement logic for block production rewards and chain owner rewards distribution from fund.

New proposals:

ID	Description
1000000	Proposal for charge side-chain transaction fee switch.
1000001	Proposal for setting side-chain gateway address.
1000003	Proposal for setting proposal expire time.
1000004	Proposal for switch of witness vote.
1000005	Proposal for setting max-size of gateway transaction inputs.
1000007	Proposal for setting founder address of witness incentive pool.
1000008	Proposal for switch of witness rewards.
1000009	Proposal for setting minimum reward distribution duration.
1000010	Proposal for setting increasing percentage of witness incentive pool.

Oracle

Implement cross-chain functionalities:

• Implement event listening component for mainchain gateway contract interaction.
• Implement event listening component for sidechain gateway contract interaction.
• Implement multi-signing functions of deposit, withdraw, and mapping actions for transaction status consensus.
• Multiple token type supported, including TRX, TRC10, TRC20, TRC721.

Token Safety:

• Add user authentication/authorization functionality for Oracle safety purpose.
• Add retry, status delay confirmation logic to handle unexpected exceptions.

SUN-SDK （JAVA）

Provide cross-chain interfaces:

• Provide map APIs to mapping TRC20/TRC721 Token from main-chain to a sidechain.
• Provide deposit APIs to migrate TRX/TRC10/TRC20/TRC721 assets from main-chain to a corresponding account on side-chain.
• Provide withdraw APIs to migrate TRX/TRC10/TRC20/TRC721 assets from side-chain to a corresponding account on main-chain.

sidechain-specific interface:

• Provide a special fundInject function to inject TRX into sidechain incentive pool.

mainchain interfaces:

• Provide basic APIs to interact with the mainchain, including asset transferring, proposal handling, exchanges, smart contract transactions, etc.

Js-sdk

• Support deposit assets from mainchain to a sidechain, including depositTrx, depositTrc10, depositTrc20, depositTrc721 functions.

• Support withdraw assets from a sidechain to the mainchain, including withdrawTrx, withdrawTrc10, withdrawTrc20, withdrawTrc721 functions.

• Support approveTrc20 and approveTrc721, which should be used before depositTrc20 or depositTrc721.

• Support mapping contract of TRC20 and TRC721 from mainchain to sidechain.

• Support retry mechanism of token deposit, withdraw and mapping operation.

• Inherit all functions of TronWeb

Sun-cli

A terminal wallet to interact with TRON mainchain and TRON sidechain.

View switch:

• Add a switch command for main-chain/side-chain view change.

More friendly functionalities on mainchain basing on wallet-cli:

• Basic interactive commands for mainchain basing on wallet-cli command interfaces.
•  Mapping command: TRC20/TRC721 mapping.
• Deposit command: Migrate TRX/TRC10TRC20/TRC721 token to side-chain account.

Side chain view functionalities:

• Basic interactive commands for the mainchain basing on wallet-cli command interfaces.
• Withdraw command: Migrate TRX/TRC10TRC20/TRC721 token back to main-chain account.
• fundInject command: for witness node reward.
• Basic interactive commands for sidechain.