Question

How can I delete a blockchain ?

Answer 1

First stop it running then delete its directory. For example if the name is chain1:

multichain-cli chain1 stop

rm -r ~/.multichain/chain1

You need to do this on every node that was connected.

Comments

does this still apply if i have offchain data? i'm trying to delete my chain but it seem there are some files i cannot delete even as `su`

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All off-chain data is stored in that directory as well. If you are unable to delete some files, it is probably because your node is still running. You should stop the node using the 'kill' command.