Identifies a UTXO by either a Fireblocks transaction ID (targets all outputs of that transaction) or a specific on-chain UTXO (txHash + index). Exactly one of these two forms must be provided.
| Name | Type | Description | Notes |
|---|---|---|---|
| txId | String | Fireblocks transaction ID | [optional] |
| txHash | String | On-chain transaction hash | [optional] |
| index | Integer | Output index (vout) | [optional] |