want to upgrade to multichain 2.0 from 1.0.6 without loosing the data

Question

Hi

can anyone please let me know is there any process to move onto multichain2.0 from 1.0.6 version without losing my existing data because I want to publish multiple items with the same key to a stream using json. or  please let me know if there is any command to publish multiple items with the same key to a stream

Thanks,

Rama

Comments

Hi,
I have tried upgradation and below are the steps i followed.

1. Download MC 2.0 version and move the bin files to /usr/local/bin.
Now the software version is updated but still you will not be able to used MC 2.0 API's.

2. Update the blockchain protocol version to be compatible with MC 2.0.
Refer to https://www.multichain.com/developers/upgrading-nodes-chains/

3. Start the multichaind daemon and launch the CLI.

Try the new API's of MC 2.0 and it works :)

Let me know if you face any issues.!

Answer 1

In terms of upgrading, all the information you need is in this guide:

https://www.multichain.com/developers/upgrading-nodes-chains/

You can use the new publishmulti(from) command in MultiChain 2.0 to easily publish multiple items in a single transaction. You don't need any special command to publish multiple items with the same key.