# QueryCompletedBlockHeightsConnectionEdge

**Type:** GraphQL objects

## Fields
- cursor (String)
- node (Block, Not Null): undefined
  - 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.