> For the complete documentation index, see [llms.txt](https://docs.empe.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.empe.io/empe-blockchain/overview/migration-to-v0.2.2.md).
# Migration to v0.2.2
### Summary of Proposal for Blockchain Upgrade to Version 0.2.2:
This proposal outlines a planned upgrade to our blockchain network, moving to version 0.2.2. The upgrade introduces critical improvements and new features aimed at enhancing the system’s functionality, security, and stability.
#### Key Changes
**1. Improvements to the DID Repository Module**
• **Enhanced Validations:** New validation mechanisms have been introduced to ensure greater data integrity and security.
• **Minor Optimizations**: Several optimizations have been applied to improve the performance and efficiency of the DID Repository module.
**2. Introduction of the New Minter Module**
• **Controlled Token Emission Mechanism**: The new minter module introduces a controlled token emission mechanism. This module allows for token minting according to predefined configurations, ensuring a regulated supply.
• **Structured Minting Process:** The minting process is structured through a series of minters, each with its own configuration and timeframe, allowing for varied emission strategies.
• **Flexible Minting Configurations**: Supported minting configurations include no minting, linear minting (emitting a fixed number of tokens over a period), and exponential step minting (emitting decreasing amounts of tokens over successive periods). This module ensures flexible and sustainable token distribution, adapting to the network’s evolving needs.
**3. Introduction of the New Vesting Module**
• **Vesting Account Management:** The new vesting module facilitates the creation and management of vesting accounts on the blockchain, ensuring a controlled release of tokens over time.
• **Creating and Splitting Vesting Accounts**: It enables token holders to create new continuous vesting accounts or split existing ones, preserving the overall token distribution schedule. The `MsgCreateVestingAccount` message allows any token holder to initiate a vesting account, specifying the start and end times for token release. Additionally, the `MsgSplitVestingAccount` message allows existing vesting accounts to divide their locked tokens into new accounts, maintaining the original vesting conditions. This module is essential for managing token distribution securely and flexibly.
**4. Security Fixes**
• This upgrade includes several important security fixes to enhance the overall security of the network.
### For Linux AMD Distributions
Download the tar.gz file:
```
curl -LO https://github.com/empe-io/empe-chain-releases/raw/master/v0.2.2/emped_v0.2.2_linux_amd64.tar.gz
```
Verify the checksum (change filename for ARM):
```
sha256sum emped_v0.2.2_linux_amd64.tar.gz
```
You should see the following:
```
0f45bd48d902fd4e55ae3f1d460b0cac0136792fddc53edfdea67bcc55d86395 emped_v0.2.2_linux_amd64.tar.gz
```
Unpack the tar.gz file:
```
tar -xvf emped_v0.2.2_linux_amd64.tar.gz
```
Move the binary to your local bin directory:
```
mkdir -p ~/go/bin
sudo mv emped ~/go/bin
```
Check the version
```
emped version
```
You should see the following:
```
0.2.2
```
### Setup cosmovisor
Create cosmovisor upgrade dir
```
export DAEMON_HOME=$HOME/.empe-chain/
mkdir -p $DAEMON_HOME/cosmovisor/upgrades/v0.2.2/bin
```
Put binary in proper dir
```
cp ~/go/bin/emped $DAEMON_HOME/cosmovisor/upgrades/v0.2.2/bin
```
Just to be sure check version (should be 0.2.2)
```
$DAEMON_HOME/cosmovisor/upgrades/v0.2.2/bin/emped version
```
### For Linux ARM Distribution
If (and only if) you're running ARM Linux, download this file instead:
```
curl -LO https://github.com/empe-io/empe-chain-releases/raw/master/v0.2.2/emped_v0.2.2_linux_arm64.tar.gz
```
Verify the checksum
```
sha256sum emped_v0.2.2_linux_arm64.tar.gz
```
You should see the following:
```
e86494527b47b9ab59b5704b6f7823eb3668bf2a8873d0afce80813db12a02f1 emped_v0.2.2_linux_arm64.tar.gz
```
Unpack the tar.gz file:
```
tar -xvf emped_v0.2.2_linux_arm64.tar.gz
```
Follow other steps as for AMD distribution
---
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