8. Submit epoch key proof to Unirep smart contract

The epoch key proof should be submitted to the Unirep smart contract, and obtain a proof index from Unirep smart contract, then it can be verified by others and be sent attestations.

npx ts-node cli/index.ts submitEpochKeyProof \
    -x $UNIREP_CONTRACT_ADDRESS  \
    -d $USER_PRIVATE_KEY  \
    -pf $EPOCH_KEY_PROOF  \
    -p $EPOCH_PUBLIC_SIGNALS

NOTE: See cli/submitEpochKeyProof for more submitEpochKeyProof options.

• The proof index will be printed, for example:

Proof index:  1

• Then the epoch key with the proof index should be handed to attester to be attested.