Network constants
This page describes the constants governing the behavior of the network and their values (that are the same for all nodes of a given network). These tables are obtained from the source code of the node, in the massa repository, and are used in various massa projects, for instance:
- Smart contract related constants in Massa-web3
- Operation related constants in Massa Station
Consensus related constants
The following constants directly impact the security of the network's consensus.
| Constant | Description | Value |
|---|---|---|
| ROLL_PRICE | The price of a Roll, in MAS | 100 |
| BLOCK_REWARD | The max number of MAS created as reward for block and endorsement production | 1.02 |
| POS_MISS_RATE_DEACTIVATION_THRESHOLD | A staker's roll will auto-sell if they miss more than the given threshold of selected block to produce during a given cycle | 70% |
| T0 | Time, in milliseconds, between two periods in the same thread | 16_000 |
| PERIODS_PER_CYCLE | The number of periods in a cycle | 128 |
| THREAD_COUNT | The number of threads | 32 |
| ENDORSEMENT_COUNT | The max number of endorsements per block | 16 |
| ROLL_COUNT_TO_SLASH_ON_DENUNCIATION | Number of roll to remove per denunciation | 1 |
| MAX_BOOTSTRAP_MESSAGE_SIZE | Max message size for bootstrap, in bytes | 300_000_000 |
| VERSIONING_THRESHOLD_TRANSITION_ACCEPTED | Threshold of votes to accept a new Massa Improvement Proposal (MIP), considering the latest MIP_STORE_STATS_BLOCK_CONSIDERED blocks | 75% |
| MIP_STORE_STATS_BLOCK_CONSIDERED | Number of blocks to consider for votes on a MIP | 1_000 |
Execution related constants
The following constants relate to Massa's execution module, and define ledger storage costs, gas usage and smart contract limitations.
Base constants
| Constant | Description | Value |
|---|---|---|
| BURN_ADDRESS | Massa address for which nobody knows the associated private key, where you can send funds to in order to burn them. | AU1111111111111111111111111111111112m1s9K |
| LEDGER_COST_PER_BYTE | The cost, in MAS, to store 1 byte in the ledger | 0.0001 |
| LEDGER_ENTRY_BASE_COST | The cost, in MAS, to create a new address in the ledger | 0.001 |
| MAX_ASYNC_POOL_LENGTH | Maximum capacity of the asynchronous messages pool | 1_000 |
| MAX_DATASTORE_KEY_LENGTH | Maximum length of a datastore key, in bytes | 255 |
| MAX_DATASTORE_VALUE_LENGTH | Maximum length of a datastore value, in bytes | 10_000_000 |
| MAX_BYTECODE_LENGTH | Maximum length of the bytecode of an address, in bytes | 10_000_000 |
| MAX_PARAMETERS_SIZE | Maximum size of parameters in call SC, in bytes | 10_000_000 |
| MAX_OPERATIONS_PER_BLOCK | The max number of operations per block | 5_000 |
| MAX_BLOCK_SIZE | The max size of a block, in bytes | 300_000 |
| MAX_GAS_PER_BLOCK | Maximum of GAS allowed for a block | 4_294_967_295 |
| MAX_ASYNC_GAS | Maximum of GAS allowed for asynchronous messages execution on one slot | 1_000_000_000 |
| ASYNC_MSG_CST_GAS_COST | Constant cost applied to asynchronous messages | 750_000 |
| BASE_OPERATION_GAS_COST | Gas used by a base operation (transaction, roll buy, roll sell) | 800_000 |
Constants added/updated with MIP-0001
| Constant | Description | Value |
|---|---|---|
| BLOCK_REWARD | The max number of MAS created as reward for block and endorsement production, following a community vote to reduce inflation (implemented only if the vote passes) | 0.40 |
| MAX_EVENT_DATA_SIZE | Maximum size, in bytes, of events emitted | 1_024. Before MIP-0001, the limit is 50_000 |
| MAX_EVENT_PER_OPERATION | Maximum event number that can be emitted for an operation | 25 |
| MAX_RECURSIVE_CALLS_DEPTH | Maximum number of recursion for calls | 25 |
| DEFERRED_CALL_MAX_FUTURE_SLOTS | Maximum size of deferred call future slots | 1209600, 1 week |
| DEFERRED_CALL_MAX_ASYNC_GAS | Maximum gas for deferred call | 1_000_000_000 |
| DEFERRED_CALL_MIN_GAS_COST | Deferred call min gas cost | 10 nanomassa |
| DEFERRED_CALL_CST_GAS_COST | Deferred call call gas cost | 750_000 |
| MAX_RUNTIME_MODULE_DEFINED_FUNCTIONS | Maximum number of function defined in a smart contract | 512 |
| MAX_RUNTIME_MODULE_FUNCTION_ARGS | Maximum number of arguments to a function | 64 |
| MAX_RUNTIME_MODULE_FUNCTION_RETURN_VALUES | Maximum number of value a function can return | 8 |
| MAX_RUNTIME_MODULE_FUNCTION_NAME_LEN | Maximum length for the name of a function defined in a smart contract | 256 |
| MAX_RUNTIME_MODULE_FUNCTION_IMPORTS | Maximum number of functions a module can import | 256 |
Network dependant constants
The following constants directly depend on the network deployed.
- 🖥 MainNet
- 👷 BuildNet
| Constant | Description | Value |
|---|---|---|
| GENESIS_TIMESTAMP | Unix timestamp (in milliseconds) of the first block of the network | 1705312800000 Monday, January 15, 2024 10:00:00 AM UTC |
| VERSION | A string representing the network's version | "MAIN.2.4" currently deployed. "MAIN.2.5" defines MIP-0001 |
| CHAINID | A number representing the network | 77658377 |
| Constant | Description | Value |
|---|---|---|
| GENESIS_TIMESTAMP | Unix timestamp (in milliseconds) of the first block of the network | 1704289800000 Wednesday, January 3, 2024 1:50:00 PM UTC |
| VERSION | A string representing the network's version | "DEVN.28.12" |
| CHAINID | A number representing the network. A signed operation contains the CHAINID, and is only valid on the corresponding network. | 77658366 |