[Beijing, May 16] Leading public blockchain Aurora Chain (token: AOA) publish new feature – Upgradable Block, bring more flexibility and utility to the public chain landscape. Developers using Aurora chain will be able to enjoy the lasted feature that Aurora brings. This upgrade can also reduce cases of hard forking.

Cases of hard forking are rather abundant during the industry’s short history. Take Bitcoin for an example, it now has more than 6 hard forks including Bitcoin Classic and Bitcoin cash. Furthermore, the already forked Bitcoin Cash forked again last year by it’s two major mining pools, creating BCHABC and BCHSV.

Hard forks can be a good way to gain attention in twitter wars, it ultimate lowered the utility of bitcoins and undermines its mining capability. For more up-to-date and advanced blockchains, this could potentially be catastrophic. Hence, the Aurora tech team came up with a solution that can lower this risk.

Basically, the solution requires mining agents or agent candidates to vote for upgrading the blockchain within a 14 days limit. When votes for an upgrade exceeds the total number of voting agents and agent candidates, this upgrade passes and a block height will be chosen for implementing the new upgrade.

An upgrade should include URL of the version released on Github, the version code, description of the update and md5 information of the new upgrade.


When the upgrading program on the network received upgrading request, it will automatically retrieve the new release and proceed to verify this version. Once the verification is successful, the test network will be activated.

Users can try this new version on the test. If any problems or glitches happened before the implementation of the release, the agent that requested the upgrade can put the upgrade to a halt. Until the halt is revoked, the upgrade will not be carried out even if the network reaches the agreed block height.

The solution has two smart contracts and an upgrade control:

Smart contract A manages the upgrade smart contract, which is smart contract B. It can substitute the old version of the blockchain code with the new one

Smart contract B regulates the process of voting and retrieving of an upgrade. It supervises 5 major parts of the solution:

  1. Agents and Agent node candidate votings
  2. Other mining agents or agent candidates participating in the voting process
  3. The upgrade is passed when “Yes” votes exceed 2/3 of the total number of the mining agents and agent candidates
  4. The agent that requests the upgrade can halt the upgrading process in case of emergency
  5. The agent that requests the upgrade can resume the upgrading process

Upgrading control has three purposes:

  1. oversee the who network, supervise the initiation, processing, and pausing/abanding the upgrade.
  2. Monitor the communication between contract A and contract b,
  3. Optimize the concurrence of Testnet and Mainnet.

Upgradable chain markes a major step for the Aurora team. It could be the antidote to the scalability issues that the industry is facing. Aurora network is faster than most public chains. “Upgradable Blockchain” further boosts versatility and utility of Aurora chain based decentralized apps.

About Aurora

Aurora makes a breakthrough in the Blockchain world. By applying DPOS+BFT consensus mechanisms, we create lightning-fast contracts to link industries such as gaming, big data, artificial intelligence and IoT. Aurora offers unique intelligent application isolation, enabling multi-chain parallel expansion and an unlimited increase of TPS with guaranteed security.



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