Module parameters

Consensus parameters for each Zcash network.

This module contains the consensus parameters which are required for parsing.

Some consensus parameters change based on network upgrades. Each network upgrade happens at a particular block height. Some parameters have a value (or function) before the upgrade height, at the upgrade height, and after the upgrade height. (For example, the value of the reserved field in the block header during the Heartwood upgrade.)

Typically, consensus parameters are accessed via a function that takes a Network and block::Height.

Modules

• arbitrary
  Arbitrary implementations for network parameters
• constants
  Definitions of Zebra chain constants, including:
• genesis 🔒
  Genesis consensus parameters for each Zcash network.
• network 🔒
  Consensus parameters for each Zcash network.
• network_upgrade 🔒
  Network upgrade consensus parameters for Zcash.
• subsidy
  Constants and calculations for Block Subsidy and Funding Streams
• testnet
  Types and implementation for Testnet consensus parameters
• transaction 🔒
  Transaction consensus and utility parameters.

Structs

• ConsensusBranchId
  The Consensus Branch Id, used to bind transactions and blocks to a particular network upgrade.
• Magic
  A magic number identifying the network.

Enums

• Network
  An enum describing the possible network choices.
• NetworkKind
  An enum describing the kind of network, whether it’s the production mainnet or a testnet.
• NetworkUpgrade
  A Zcash network upgrade.

Constants

• GENESIS_PREVIOUS_BLOCK_HASH
  The previous block hash for the genesis block.
• NETWORK_UPGRADES_IN_ORDER
  A list of network upgrades in the order that they must be activated.
• OVERWINTER_VERSION_GROUP_ID
  The version group ID for Overwinter transactions.
• POST_BLOSSOM_POW_TARGET_SPACING
  The target block spacing after Blossom activation.
• POW_AVERAGING_WINDOW
  The averaging window for difficulty threshold arithmetic mean calculations.
• SAPLING_VERSION_GROUP_ID
  The version group ID for Sapling transactions.
• TESTNET_MAX_TIME_START_HEIGHT
  The activation height for the block maximum time rule on Testnet.
• TX_V5_VERSION_GROUP_ID
  The version group ID for version 5 transactions.