Using Veramo with Ganache

[AbderrazagB]

Hey, Im new to vermao and im trying to find a way to use in a local node (ganache) but i cant seem to connect to it.
I will be very grateful if someone could help me!

[iyedM]

Same problem

[pauldesmondparker]

This might be a bit late for you guys, but I'll answer. Ganache has been sunset by ConsenSys, so for a local node you'd be looking to use hardhat node or anvil (forge).

Deploy

Once you have one of those local networks up, you'd first want to deploy your registry flavor, for example ethr-did-registry.

At the bottom of the README there are instructions to deploy the registry to a blockchain. If you need more detail look at this issue.

Configure

You'll need to look in the docs for the context of where this should go, but this is a rough go at it.

          new DIDManager({
            store: new DIDStore(dbConnection),
            defaultProvider: 'anvil',
            providers: {
              'did:ethr:anvil': new EthrDIDProvider({
                defaultKms: 'local',
                networks: [
                  {
                    name: 'anvil'  // I would have named this `local` but for the confusion with the local kms.
                    provider: new JsonRpcProvider( 
                      127.0.0.1:8545,  // Anvil  local node
                      31337,  // ChainId, not tested by me
                    ),
                    registry: '0x03d5003bf0e79c5f5223588f347eba39afbc3818',  // current version CREATE2 address
                  },
                ],
              }),
            },
          }),

You'd also need to setup your DIDResolverPlugin.

I prefer to use JsonRpcProvider above because I gain extra control over the additional settings that it takes. Specifically, staticNetwork which stops ethers making a ridiculous number of eth_chainid calls against a rate and/or usage limited rpc endpoint. Not needed for a local node though.

Your dids will look like this did:ethr:anvil:0x03fea...a975

[mirceanis]

Great stuff!

Perhaps we should replace the tests that depend on ganache with something like this.
Is it possible to spin-up anvil or hardhat node in a plain jest test?