| 0 | Network Test Callback (Return success means your service is working), Enum: NETWORK_TEST_CALLBACK |
| 4 | Before On Chain PII Callback (PII will be sent to you after address process being verified in before-on-chain process), Enum: STANDARD_VERIFY_RESULT_CALLBACK |
| 6 | Before Chain Verify Address Callback (First step of before-on-chain to verify the address is exists in the opposite service), Enum: BEFORE_CHAIN_VERIFY_ADDRESS_CALLBACK |
| 7 | Before On Chain Verify Transaction Result Callback (Once before on chain has complete, opposite side will notify the actual txId on blockchain to you), Enum: STANDARD_VERIFY_TRANSACTION_RESULT_CALLBACK |
| 8 | Challenge Callback (Invite to provide the PII hash according specific user info), Enum: CHALLENGE_VERIFY_CALLBACK |
