storage proof usdc-storage-proof.json: USDC 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48 at block 25498038, total_supply 50733147174853931
  S1 header hash recomputes: OK
  S2 account proof to stateRoot: OK
  S3 storage proof to storageHash: OK

Storage proof verified: the stated total_supply is the value of the stated slot in the stated contract's storage at the stated block header.