- FAST (default): also waits for finalization, then returns the transaction hash as a string
- FINAL: waits for finalization and returns a structured result
- FAST returns a string tx-hash like
0x4a8b...9f. - FINAL returns the receipt attributes, including
extrinsic_hash,block_hashandfinalized.
BROADCAST, IN_BLOCK, FINALIZED) is only printed when you pass an on_status callback, as shown on Status Callbacks.
