ethereum · djrtwo · Apr 2, 2019 · Mar 31, 2019 · Mar 31, 2019 · Mar 31, 2019
diff --git a/specs/core/0_beacon-chain.md b/specs/core/0_beacon-chain.md
@@ -18,7 +18,7 @@
         - [Time parameters](#time-parameters)
         - [State list lengths](#state-list-lengths)
         - [Reward and penalty quotients](#reward-and-penalty-quotients)
-        - [Max transactions per block](#max-transactions-per-block)
+        - [Max operations per block](#max-operations-per-block)
         - [Signature domains](#signature-domains)
     - [Data structures](#data-structures)
         - [Misc dependencies](#misc-dependencies)
@@ -34,7 +34,7 @@
             - [`Validator`](#validator)
             - [`PendingAttestation`](#pendingattestation)
             - [`HistoricalBatch`](#historicalbatch)
-        - [Beacon transactions](#beacon-transactions)
+        - [Beacon operations](#beacon-operations)
             - [`ProposerSlashing`](#proposerslashing)
             - [`AttesterSlashing`](#attesterslashing)
             - [`Attestation`](#attestation)
@@ -132,7 +132,7 @@
             - [Block header](#block-header)
             - [RANDAO](#randao)
             - [Eth1 data](#eth1-data-1)
-            - [Transactions](#transactions)
+            - [Operations](#operations)
                 - [Proposer slashings](#proposer-slashings)
                 - [Attester slashings](#attester-slashings)
                 - [Attestations](#attestations)
@@ -261,8 +261,7 @@ Code snippets appearing in `this style` are to be interpreted as Python code.
 * The `BASE_REWARD_QUOTIENT` parameter dictates the per-epoch reward. It corresponds to ~2.54% annual interest assuming 10 million participating ETH in every epoch.
 * The `INACTIVITY_PENALTY_QUOTIENT` equals `INVERSE_SQRT_E_DROP_TIME**2` where `INVERSE_SQRT_E_DROP_TIME := 2**12 epochs` (~18 days) is the time it takes the inactivity penalty to reduce the balance of non-participating [validators](#dfn-validator) to about `1/sqrt(e) ~= 60.6%`. Indeed, the balance retained by offline [validators](#dfn-validator) after `n` epochs is about `(1 - 1/INACTIVITY_PENALTY_QUOTIENT)**(n**2/2)` so after `INVERSE_SQRT_E_DROP_TIME` epochs it is roughly `(1 - 1/INACTIVITY_PENALTY_QUOTIENT)**(INACTIVITY_PENALTY_QUOTIENT/2) ~= 1/sqrt(e)`.
 
-
-### Max transactions per block
+### Max operations per block
 
 | Name | Value |
 | - | - |
@@ -460,7 +459,7 @@ The types are defined topologically to aid in facilitating an executable version
 }
 ```
 
-### Beacon transactions
+### Beacon operations
 
 #### `ProposerSlashing`
 
@@ -2234,7 +2233,7 @@ def process_eth1_data(state: BeaconState, block: BeaconBlock) -> None:
     state.eth1_data_votes.append(Eth1DataVote(eth1_data=block.body.eth1_data, vote_count=1))
 ```
 
-#### Transactions
+#### Operations
 
 ##### Proposer slashings
 
@@ -2246,7 +2245,7 @@ For each `proposer_slashing` in `block.body.proposer_slashings`, run the followi
 def process_proposer_slashing(state: BeaconState,
                               proposer_slashing: ProposerSlashing) -> None:
     """
-    Process ``ProposerSlashing`` transaction.
+    Process ``ProposerSlashing`` operation.
     Note that this function mutates ``state``.
     """
     proposer = state.validator_registry[proposer_slashing.proposer_index]
@@ -2277,7 +2276,7 @@ For each `attester_slashing` in `block.body.attester_slashings`, run the followi
 def process_attester_slashing(state: BeaconState,
                               attester_slashing: AttesterSlashing) -> None:
     """
-    Process ``AttesterSlashing`` transaction.
+    Process ``AttesterSlashing`` operation.
     Note that this function mutates ``state``.
     """
     attestation1 = attester_slashing.attestation_1
@@ -2312,7 +2311,7 @@ For each `attestation` in `block.body.attestations`, run the following function:
 ```python
 def process_attestation(state: BeaconState, attestation: Attestation) -> None:
     """
-    Process ``Attestation`` transaction.
+    Process ``Attestation`` operation.
     Note that this function mutates ``state``.
     """
     assert max(GENESIS_SLOT, state.slot - SLOTS_PER_EPOCH) <= attestation.data.slot
@@ -2367,7 +2366,7 @@ For each `exit` in `block.body.voluntary_exits`, run the following function:
 ```python
 def process_voluntary_exit(state: BeaconState, exit: VoluntaryExit) -> None:
     """
-    Process ``VoluntaryExit`` transaction.
+    Process ``VoluntaryExit`` operation.
     Note that this function mutates ``state``.
     """
     validator = state.validator_registry[exit.validator_index]
@@ -2403,7 +2402,7 @@ For each `transfer` in `block.body.transfers`, run the following function:
 ```python
 def process_transfer(state: BeaconState, transfer: Transfer) -> None:
     """
-    Process ``Transfer`` transaction.
+    Process ``Transfer`` operation.
     Note that this function mutates ``state``.
     """
     # Verify the amount and fee aren't individually too big (for anti-overflow purposes)

diff --git a/specs/core/1_custody-game.md b/specs/core/1_custody-game.md
@@ -13,7 +13,7 @@
     - [Constants](#constants)
         - [Misc](#misc)
         - [Time parameters](#time-parameters)
-        - [Max transactions per block](#max-transactions-per-block)
+        - [Max operations per block](#max-operations-per-block)
         - [Signature domains](#signature-domains)
     - [Data structures](#data-structures)
         - [Custody objects](#custody-objects)
@@ -33,7 +33,7 @@
         - [`epoch_to_custody_period`](#epoch_to_custody_period)
         - [`verify_custody_key`](#verify_custody_key)
     - [Per-block processing](#per-block-processing)
-        - [Transactions](#transactions)
+        - [Operations](#operations)
             - [Custody reveals](#custody-reveals)
             - [Chunk challenges](#chunk-challenges)
             - [Bit challenges](#bit-challenges)
@@ -79,7 +79,7 @@ This document details the beacon chain additions and changes in Phase 1 of Ether
 | `EPOCHS_PER_CUSTODY_PERIOD` | `2**11` (= 2,048) | epochs | ~9 days |
 | `CUSTODY_RESPONSE_DEADLINE` | `2**14` (= 16,384) | epochs | ~73 days |
 
-### Max transactions per block
+### Max operations per block
 
 | Name | Value |
 | - | - |
@@ -259,9 +259,9 @@ def verify_custody_key(state: BeaconState, reveal: CustodyKeyReveal) -> bool:
 
 ## Per-block processing
 
-### Transactions
+### Operations
 
-Add the following transactions to the per-block processing, in order the given below and after all other transactions in phase 0.
+Add the following operations to the per-block processing, in order the given below and after all other operations in phase 0.
 
 #### Custody reveals
 

diff --git a/utils/phase0/state_transition.py b/utils/phase0/state_transition.py
@@ -22,54 +22,54 @@ def expected_deposit_count(state: BeaconState) -> int:
     )
 
 
-def process_transaction_type(state: BeaconState,
-                             transactions: List[Any],
-                             max_transactions: int,
-                             tx_fn: Callable[[BeaconState, Any], None]) -> None:
-    assert len(transactions) <= max_transactions
-    for transaction in transactions:
-        tx_fn(state, transaction)
+def process_operation_type(state: BeaconState,
+                           operations: List[Any],
+                           max_operations: int,
+                           tx_fn: Callable[[BeaconState, Any], None]) -> None:
+    assert len(operations) <= max_operations
+    for operation in operations:
+        tx_fn(state, operation)
 
 
-def process_transactions(state: BeaconState, block: BeaconBlock) -> None:
-    process_transaction_type(
+def process_operations(state: BeaconState, block: BeaconBlock) -> None:
+    process_operation_type(
         state,
         block.body.proposer_slashings,
         spec.MAX_PROPOSER_SLASHINGS,
         spec.process_proposer_slashing,
     )
 
-    process_transaction_type(
+    process_operation_type(
         state,
         block.body.attester_slashings,
         spec.MAX_ATTESTER_SLASHINGS,
         spec.process_attester_slashing,
     )
 
-    process_transaction_type(
+    process_operation_type(
         state,
         block.body.attestations,
         spec.MAX_ATTESTATIONS,
         spec.process_attestation,
     )
 
     assert len(block.body.deposits) == expected_deposit_count(state)
-    process_transaction_type(
+    process_operation_type(
         state,
         block.body.deposits,
         spec.MAX_DEPOSITS,
         spec.process_deposit,
     )
 
-    process_transaction_type(
+    process_operation_type(
         state,
         block.body.voluntary_exits,
         spec.MAX_VOLUNTARY_EXITS,
         spec.process_voluntary_exit,
     )
 
     assert len(block.body.transfers) == len(set(block.body.transfers))
-    process_transaction_type(
+    process_operation_type(
         state,
         block.body.transfers,
         spec.MAX_TRANSFERS,
@@ -84,7 +84,7 @@ def process_block(state: BeaconState,
     spec.process_randao(state, block)
     spec.process_eth1_data(state, block)
 
-    process_transactions(state, block)
+    process_operations(state, block)
     if verify_state_root:
         spec.verify_block_state_root(state, block)