1. Spin up the testing chain

In the Unirep repository, go to./packages/core and run a hardhat testing node:

cd packages/core && \
npx hardhat node

NOTE: a list of default accounts will be printed, choose one of them to be user's account and one to be attester's. User's and attester's private key will be referred to as userPrivateKey and attesterPrivateKey respectively.

• For example, choose 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80 as the user's private key and 0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d as the attester's private key

• Export both keys to the environment:

export USER_PRIVATE_KEY=0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
export ATTESTER_PRIVATE_KEY=0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d

NOTE: Then open another terminal to run the following cli-commands.