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docs(spec): restore BatchOutput definition #691

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a165d58
docs(spec): restore BatchOutput definition
decofe Jul 16, 2026
1dcb1ee
docs(spec): move BatchOutput to common types
decofe Jul 16, 2026
a3829d5
docs(spec): flatten withdrawal batch index
decofe Jul 17, 2026
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11 changes: 9 additions & 2 deletions specs/spec.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1293,7 +1293,7 @@ The state transition function produces:
| `block_transition` | `prev_block_hash` to `next_block_hash` covering all blocks in the batch |
| `deposit_queue_transition` | Deposit queue progress from the previous `(processed_hash, deposit_number)` pair to the next `(processed_hash, deposit_number)` pair |
| `withdrawal_queue_hash` | Hash chain of withdrawals finalized in this batch (`0` if none) |
| `last_batch_commitment` | `withdrawal_batch_index` read from `ZoneOutbox.lastBatch` |
| `withdrawal_batch_index` | Withdrawal batch index read from `ZoneOutbox.lastBatch` |

### Block Execution (Stateless prover execution function)

Expand Down Expand Up @@ -1333,7 +1333,7 @@ The stateless execution function must reject the witness on any failed check, mi
Require `TempoState.tempoBlockNumber == public_inputs.tempo_block_number`. If `anchor_block_number == tempo_block_number`, require `TempoState.tempoBlockHash == anchor_block_hash`. Otherwise, verify the parent-hash chain from `tempo_block_number` to `anchor_block_number` using `tempo_ancestry_headers`, ending at `anchor_block_hash`.

12. **Return the batch outputs.**
Set `block_transition.prev_block_hash = public_inputs.prev_block_hash` and `block_transition.next_block_hash = prev_block_hash` after the final block. Set `deposit_queue_transition.prev_processed_hash` and `deposit_queue_transition.prev_deposit_number` to the values captured before executing the batch, and set `deposit_queue_transition.next_processed_hash` and `deposit_queue_transition.next_deposit_number` to the final inbox processed hash and processed deposit number. Set `withdrawal_queue_hash` and `last_batch_commitment.withdrawal_batch_index` from the final `ZoneOutbox.lastBatch` state.
Set `block_transition.prev_block_hash = public_inputs.prev_block_hash` and `block_transition.next_block_hash = prev_block_hash` after the final block. Set `deposit_queue_transition.prev_processed_hash` and `deposit_queue_transition.prev_deposit_number` to the values captured before executing the batch, and set `deposit_queue_transition.next_processed_hash` and `deposit_queue_transition.next_deposit_number` to the final inbox processed hash and processed deposit number. Set `withdrawal_queue_hash` and `withdrawal_batch_index` from the final `ZoneOutbox.lastBatch` state.

### Tempo State Proofs

Expand Down Expand Up @@ -1573,6 +1573,13 @@ struct DepositQueueTransition {
uint64 nextDepositNumber;
}

struct BatchOutput {
BlockTransition blockTransition;
DepositQueueTransition depositQueueTransition;
bytes32 withdrawalQueueHash;
uint64 withdrawalBatchIndex;
}

struct TokenConfig {
bool enabled;
bool depositsActive;
Expand Down
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