mvs-org / metaverse-vm-scraper

State migration

This script allows bootstrapping a New-frontiers chain with the snapshot state of Hyperspace chain. Basically it's a state storage migration from Hyperspace.

State storage:

• EVM account balance
• EVM contract storage

Usage

1. Clone this repository and install dependencies

   git clone https://github.com/mvs-org/metaverse-vm-scraper.git
   cd metaverse-vm-scraper
   npm i

2. Copy the executable/binary of the New-frontiers node inside the src/data folder and rename it to binary.

3. Copy the runtime WASM blob of the New-frontiers runtime to the src/data folder and rename it to runtime.wasm. To get the WASM blob, compile New-frontiers and look for ./target/release/wbuild/runtime/runtime.compact.wasm.

4. Copy the additional Hyperspace types to the src/data folder and rename it to schema.json.

5. Either run a full Hyperspace node locally(Recommended) or have an external endpoint handy.

6. Run the script

   • If using a local node, simply run the script using (BLOCK_NR is for block height, default is "latest")

     BLOCK_NR=500000 node src/fork.js

   • If you are using an external/non-default endpoint, you need to provide it to the script via the HTTP_RPC_ENDPOINT environment variable

     BLOCK_NR=500000 RPC_URL=http://example.com WS_URL=ws://example.com node src/fork.js

7. You should have the genesis file for the forked chain inside the data folder. It will be called fork.json.

8. You can now run a New-frontiers chain using this genesis file

   ./binary --chain fork.json --alice