Why doesn't my wallet balance line up with sent and received amounts on Blockcypher?

[Bitcoin]

Why doesn't my wallet balance line up with sent and received amounts on Blockcypher?

I created an HD wallet using Blockcypher API.
I've sent to this wallet a total of 120,000 satoshis in 3 different transactions:

• 50,000 satoshis


• 30,000 satoshis


• 40,000 satoshis

As I'm calling getBalance I'm getting a weird response:

I can see that the total received is 120K as expected. But for some reason the balance (and final_balance) is set to 40K, and I see that 30K were sent (I did not send anything out).

Any reasonable explanation? I was expecting to simply get 120K as the wallet balance.

Source: Why doesn't my wallet balance line up with sent and received amounts on Blockcypher?