# Event

**Type:** GraphQL objects

**Description:**
Represents an event emitted during the execution of a smart contract function.

Events are structured outputs generated by Pact code when certain actions occur on-chain —
such as token transfers, mints, burns, or other contract-specific behaviors. They are commonly
used by explorers, indexers, wallets, and analytics tools to track contract activity, monitor
state changes, and trigger off-chain processes.

Each event is associated with a specific block, transaction, and request key, and includes
metadata like its qualified name (`moduleName.eventName`), parameters, and position within the transaction.

## Fields
- id (ID): Globally unique identifier for this event.
- name (String): The name of the event as defined in the smart contract.
Example: `"TRANSFER"`.
- block (Block, Not Null): The block in which this event was emitted.
  - id (ID): Globally unique identifier for this block node.
  - hash (String): The cryptographic hash of the block.
This serves as its unique identifier within the blockchain.
  - chainId (BigInt): The specific chain where this block was mined.
Kadena is a multi-chain system, and each block belongs to exactly one chain.
  - creationTime (DateTime): The timestamp when this block was created and added to the chain.
  - difficulty (BigInt): The network difficulty at the time the block was mined.
Higher difficulty reflects the amount of computational work required to produce a valid block.
  - epoch (DateTime): The epoch timestamp marking when the difficulty was last adjusted.
Kadena targets ~30 seconds per block, and the difficulty is recalibrated periodically to maintain that target.
  - flags (Decimal): Consensus flags used internally by the protocol.
  - height (BigInt): The height (block number) of this block within its chain.
The genesis block is height 0, and each subsequent block increments by 1.
  - nonce (Decimal): A nonce value used in the proof-of-work process.
Miners vary this value to discover a hash below the target threshold.
  - payloadHash (String): The hash of the payload data contained within the block.
This ensures the integrity of the transactions and other included data.
  - weight (String): The cumulative weight of the chain up to and including this block.
Weight increases with each mined block and helps determine the canonical chain.
  - target (String): The target hash threshold that the block’s proof-of-work hash must fall below.
This value adjusts with difficulty to regulate block production time.
  - coinbase (String): The coinbase transaction data.
This transaction rewards the miner and may include information about block rewards or other protocol-defined payouts.
  - neighbors (BlockNeighbor): The neighboring blocks that reference this block as a parent.
These neighbors are essential in Kadena’s braided multi-chain architecture.
  - powHash (String): The proof-of-work hash of the block.
This is the result of hashing the block header with the nonce and must satisfy the target condition.
  - canonical (Boolean): Indicates whether this block is part of the canonical chain.
Non-canonical blocks may occur during temporary forks or reorganizations.
  - parent (Block): The parent block directly preceding this one in the chain.
Together with the hash, this forms the cryptographic link that secures the chain.
  - totalGasUsedInKda (Decimal): The total amount of gas used by all transactions in this block, expressed in KDA.
  - events (BlockEventsConnection): Paginated list of events emitted by transactions within this block.
  - minerAccount (FungibleChainAccount): The account that mined this block and received the coinbase reward.
  - transactions (BlockTransactionsConnection): Paginated list of transactions included in this block.
- chainId (BigInt): The ID of the chain where the event occurred.
- height (BigInt): The height of the block in which this event was emitted.
- moduleName (String): The name of the module that emitted the event.
Example: `"coin"`.
- orderIndex (BigInt): The index position of this event within the transaction’s event list.
Useful when multiple events are emitted by the same transaction.
- requestKey (String): The request key of the transaction that emitted this event.
- parameters (String): The raw JSON-encoded event parameters as emitted by the contract.
- parameterText (String): A human-readable text representation of the event parameters.
- qualifiedName (String): The fully qualified event name, combining the module and event name.
Example: `"coin.TRANSFER"`.
- transaction (Transaction): The transaction that emitted this event.
  - id (ID): Globally unique identifier for this transaction node.
  - cmd (TransactionCommand): The original signed transaction command submitted to the network.
Includes metadata, payload, signers, and network information.
  - hash (String): The unique hash of the transaction.
This value is derived from the signed command and serves as the canonical identifier
for the transaction on-chain.
  - result (TransactionInfo): The result of executing the transaction.
Includes information such as success/failure status, events, continuation data,
and any state changes triggered by execution.
  - sigs (TransactionSignature): The list of signatures associated with the transaction.
Each signature proves authorization from a required signer and is used to validate
that the transaction was properly authorized before execution.