The four most famous international exchanges:

Binance INTL	OKX INTL	Gate.io INTL	Huobi INTL
China Line　APP DL	China Line　APP DL	China Line　APP DL	China Line　APP DL

Note: The above exchange logo is the official website registration link, and the text is the APP download link.

As mentioned in the previous article, Grin will undergo four hard forks in the first two years of its launch. The code is set to undergo a hard fork approximately every 6 months and every 6024726 = 262.080 blocks.

· First hard fork block height: 262.080. Completed

· Second hard fork block height: 524.160. Completed

· The third hard fork block height: 786.240

· The fourth hard fork block height: 1.048.320

The third network upgrade is expected to be in mid-July this year, when grin-node, grin-wallet and grin-
The compatible version of the miner will be upgraded to 4.0.0 or higher. The first release is scheduled for June.

First Class Warehouse Note: The major changes, dates, and coordination and communication mentioned below are all to successfully complete the third upgrade and give system participants sufficient time to prepare. We will update as soon as there are other new changes.

Important information:

Grin
v4.0.0 is a large-scale network upgrade. Users do not need to do anything except update the binaries to use Grin after upgrading. Stored GRIN tokens will not be affected. But beware of scammers asking you to transfer GRIN to other places.

Major changes:

Here are some of the major changes. After the team determines the final scope of changes, the first-class warehouse will be updated as soon as possible.

node:

·
Final tweaks to the AR (ASIC-resistant) proof-of-work algorithm. Grin has kept its promise and will adjust the CuckARoo algorithm to prevent manufacturers from building specialized ASIC miners for it. Therefore, Cuckaroom will be replaced by a new algorithm, the details of which have not yet been made public. At that time, the forum will push an article determining the algorithm in advance, as well as the corresponding change request. At the same time, the mining software must be upgraded.

Definition: To be determined

Cuckoo Cycle library: 

Corresponding Grin hard fork PoW proposal: TBD

Grin-miner improvement request: pending

· Deprecated Node API v1: Deprecated the first version of the Node API.

· Parallel IBD: An improved initial synchronization and download process of blockchain data.

Relative locked kernels: support future use cases such as payment channels.

wallet:

·Compact slates: A new, slate format designed to reduce traces as much as possible.

·Slate serialisation: A new serial slate to transfer as large a data size as possible.

· Armored slates: An iteration of file-based processing designed to make it as easy as possible for users to copy/paste slate file text across different media and devices.

·Reject http to obtain external addresses: Unsafe http will be rejected, probably in version 5.0.0 (January 2021).

Compatibility: TBD

Operating requirements: TBD

details

·Latest overview: Issues in the v4.0.0 plan

· Node milestone: 

·Wallet milestone: 

Schedule

Note: The actual date (except hard fork block height) will be adjusted according to the situation.

Before the hard fork, the Grin community will communicate as follows: