Uses of Class
com.privatechain.core.model.Block

Packages that use Block

Package	Description
com.privatechain.consensus	Built-in ConsensusEngine implementations for the private-blockchain library.
com.privatechain.consensus.pbft	Practical Byzantine Fault Tolerance (PBFT) consensus engine (FR-CONS-04, NFR-REL-03).
com.privatechain.consensus.poa	Proof of Authority (PoA) consensus engine — accepts blocks only from a configured set of authorized signer addresses (FR-CONS-03, AC-02).
com.privatechain.consensus.pow	Proof of Work (PoW) consensus engine — SHA-256 hash mining with configurable difficulty (FR-CONS-02, AC-03).
com.privatechain.consensus.roundrobin	Round-Robin consensus engine — deterministic slot-based block production for development and testing (FR-CONS-05).
com.privatechain.core.builder	Assembly layer — the single location where all library modules are composed.
com.privatechain.core.event	Sealed event hierarchy and the asynchronous publish-subscribe event bus.
com.privatechain.core.exception	Unchecked exception hierarchy rooted at BlockchainException.
com.privatechain.core.model	Immutable domain objects — the fundamental data model of the private-blockchain library.
com.privatechain.core.spi	Service Provider Interfaces (SPIs) — the primary extension points of the library.
com.privatechain.examples.spring	Spring Boot REST demo — exposes a running BlockchainNode as an HTTP API using Spring Boot 4.x autoconfiguration (T-075, AC-10).
com.privatechain.network.gossip	Transaction gossip and block broadcast — propagates newly submitted transactions and mined blocks to connected peers (FR-NET-02, FR-NET-03).
com.privatechain.network.rpc	Netty TCP server, client, and NDJSON message codec — the transport layer of the P2P networking stack (FR-NET-01, ADR-001).
com.privatechain.network.sync	Chain synchronization and fork resolution — brings a node's local chain up to date with the network on startup and after a network partition (FR-NET-04, FR-NET-05).
com.privatechain.storage	BlockchainStorage implementations and chain export utilities for the private-blockchain library.
com.privatechain.storage.fs	File-system storage backend — persists each block as an individual JSON file in a configurable directory (FR-STOR-05).
com.privatechain.storage.leveldb	LevelDB persistent storage backend — crash-safe block persistence via the leveldbjni native library (FR-STOR-03, NFR-REL-01).
com.privatechain.storage.memory	In-memory storage backend — ephemeral, zero-dependency block storage backed by a LinkedHashMap (FR-STOR-02).
com.privatechain.storage.rocksdb	RocksDB persistent storage backend — high-throughput block persistence via the rocksdbjni native library (FR-STOR-04).

Uses of Block in com.privatechain.consensus

Methods in com.privatechain.consensus that return Block

Modifier and Type	Method	Description
static Block	ConsensusSupport.buildBlock(Block previousBlock, List<Transaction> transactions, int bits, long nonce, String minerAddress, Instant timestamp)	Builds a canonical block from consensus-specific inputs.

Methods in com.privatechain.consensus with parameters of type Block

Modifier and Type	Method	Description
static Block	ConsensusSupport.buildBlock(Block previousBlock, List<Transaction> transactions, int bits, long nonce, String minerAddress, Instant timestamp)	Builds a canonical block from consensus-specific inputs.
static boolean	ConsensusSupport.hasConsistentIntegrity(Block block)	Performs the baseline integrity checks shared by all consensus engines.
static boolean	ConsensusSupport.isGenesis(Block block)	Returns true if the supplied block is the genesis block.

Uses of Block in com.privatechain.consensus.pbft

Methods in com.privatechain.consensus.pbft that return Block

Modifier and Type	Method	Description
Block	PBFTEngine.mineBlock(List<Transaction> transactions, Block previousBlock)	Produces a new block using the deterministic PBFT leader for the current view.

Methods in com.privatechain.consensus.pbft with parameters of type Block

Modifier and Type	Method	Description
Block	PBFTEngine.mineBlock(List<Transaction> transactions, Block previousBlock)	Produces a new block using the deterministic PBFT leader for the current view.
boolean	PBFTEngine.validateBlock(Block block, Blockchain chain)	Validates whether the candidate block satisfies the PBFT acceptance rules.

Uses of Block in com.privatechain.consensus.poa

Methods in com.privatechain.consensus.poa that return Block

Modifier and Type	Method	Description
Block	ProofOfAuthorityEngine.mineBlock(List<Transaction> transactions, Block previousBlock)	Builds a new authority-signed block using the first authorized miner address.

Methods in com.privatechain.consensus.poa with parameters of type Block

Modifier and Type	Method	Description
Block	ProofOfAuthorityEngine.mineBlock(List<Transaction> transactions, Block previousBlock)	Builds a new authority-signed block using the first authorized miner address.
boolean	ProofOfAuthorityEngine.validateBlock(Block block, Blockchain chain)	Validates whether the candidate block was produced by an authorized miner.

Uses of Block in com.privatechain.consensus.pow

Methods in com.privatechain.consensus.pow that return Block

Modifier and Type	Method	Description
Block	ProofOfWorkEngine.mineBlock(List<Transaction> transactions, Block previousBlock)	Mines a new block by searching for a nonce that satisfies the configured leading-zero-bit target.

Methods in com.privatechain.consensus.pow with parameters of type Block

Modifier and Type	Method	Description
Block	ProofOfWorkEngine.mineBlock(List<Transaction> transactions, Block previousBlock)	Mines a new block by searching for a nonce that satisfies the configured leading-zero-bit target.
boolean	ProofOfWorkEngine.validateBlock(Block block, Blockchain chain)	Validates whether the candidate block satisfies the proof-of-work rules.

Uses of Block in com.privatechain.consensus.roundrobin

Methods in com.privatechain.consensus.roundrobin that return Block

Modifier and Type	Method	Description
Block	RoundRobinEngine.mineBlock(List<Transaction> transactions, Block previousBlock)	Produces a new block for the next round-robin slot.

Methods in com.privatechain.consensus.roundrobin with parameters of type Block

Modifier and Type	Method	Description
Block	RoundRobinEngine.mineBlock(List<Transaction> transactions, Block previousBlock)	Produces a new block for the next round-robin slot.
boolean	RoundRobinEngine.validateBlock(Block block, Blockchain chain)	Validates whether the candidate block was produced by the peer assigned to the current slot.

Uses of Block in com.privatechain.core.builder

Methods in com.privatechain.core.builder that return Block

Modifier and Type	Method	Description
static Block	GenesisBlockFactory.create(String chainId)	Creates a deterministic genesis block for the given chain identifier.
static Block	GenesisBlockFactory.createDefault()	Creates a genesis block with the default chain ID "private-blockchain".
Block	Blockchain.getBlock(int index)	Returns the block at the given index.
Block	Blockchain.getLatestBlock()	Returns the most recently added block (the chain tip).

Methods in com.privatechain.core.builder that return types with arguments of type Block

Modifier and Type	Method	Description
Optional<Block>	Blockchain.getBlockByHash(String hash)	Returns the block with the given hash, if present.
List<Block>	Blockchain.getChain()	Returns all blocks in ascending index order.

Methods in com.privatechain.core.builder with parameters of type Block

Modifier and Type	Method	Description
void	Blockchain.addBlock(Block block)	Appends a new block to the chain after performing all validation checks.

Uses of Block in com.privatechain.core.event

Methods in com.privatechain.core.event that return Block

Modifier and Type	Method	Description
Block	BlockchainEvent.BlockAddedEvent.getBlock()	Returns the block that was added to the chain.
Block	BlockchainEvent.ForkDetectedEvent.getBlockA()	Returns the first competing block.
Block	BlockchainEvent.ForkDetectedEvent.getBlockB()	Returns the second competing block.

Constructors in com.privatechain.core.event with parameters of type Block

Modifier	Constructor	Description
	BlockAddedEvent(Block block)	Constructs a BlockAddedEvent.
	ForkDetectedEvent(Block blockA, Block blockB)	Constructs a ForkDetectedEvent.

Uses of Block in com.privatechain.core.exception

Methods in com.privatechain.core.exception that return Block

Modifier and Type	Method	Description
Block	BlockValidationException.getBlock()	Returns the block that triggered this exception.

Constructors in com.privatechain.core.exception with parameters of type Block

Modifier	Constructor	Description
	BlockValidationException(String message, Block block)	Constructs an exception with a detail message and the offending block.
	BlockValidationException(String message, Throwable cause, Block block)	Constructs an exception with a detail message, cause, and the offending block.

Uses of Block in com.privatechain.core.model

Methods in com.privatechain.core.model that return Block

Modifier and Type	Method	Description
Block	Block.Builder.build()	Builds and returns an immutable Block.

Uses of Block in com.privatechain.core.spi

Methods in com.privatechain.core.spi that return Block

Modifier and Type	Method	Description
Block	BlockchainStorage.loadBlock(int index)	Retrieves a block by its index.
Block	ConsensusEngine.mineBlock(List<Transaction> transactions, Block previousBlock)	Produces a new candidate block from the given transactions and the current chain tip.

Methods in com.privatechain.core.spi that return types with arguments of type Block

Modifier and Type	Method	Description
List<Block>	BlockchainStorage.loadAll()	Returns all stored blocks in ascending index order.
Optional<Block>	BlockchainStorage.loadBlockByHash(String hash)	Retrieves a block by its SHA-256 hash.

Methods in com.privatechain.core.spi with parameters of type Block

Modifier and Type	Method	Description
Block	ConsensusEngine.mineBlock(List<Transaction> transactions, Block previousBlock)	Produces a new candidate block from the given transactions and the current chain tip.
void	BlockchainStorage.saveBlock(Block block)	Persists a block to the underlying storage medium.
boolean	ConsensusEngine.validateBlock(Block block, Blockchain chain)	Validates whether the given block satisfies the consensus rules of this engine.

Uses of Block in com.privatechain.examples.spring

Methods in com.privatechain.examples.spring that return types with arguments of type Block

Modifier and Type	Method	Description
org.springframework.http.ResponseEntity<Block>	BlockchainRestController.getBlock(int index)	Returns a single block by its zero-based index.
org.springframework.http.ResponseEntity<List<Block>>	BlockchainRestController.getChain()	Returns the full blockchain as an ordered JSON array.

Uses of Block in com.privatechain.network.gossip

Methods in com.privatechain.network.gossip with parameters of type Block

Modifier and Type	Method	Description
void	BlockBroadcaster.broadcast(Block block)	Fans out the given block to all currently connected peers.

Uses of Block in com.privatechain.network.rpc

Methods in com.privatechain.network.rpc that return Block

Modifier and Type	Method	Description
Block	MessageCodec.extractBlock(MessageCodec.NetworkMessage message)	Extracts and deserializes a Block from the payload of a BLOCK message.

Methods in com.privatechain.network.rpc with parameters of type Block

Modifier and Type	Method	Description
MessageCodec.NetworkMessage	MessageCodec.blockMessage(String senderId, Block block)	Creates a BLOCK message carrying the given block.

Uses of Block in com.privatechain.network.sync

Methods in com.privatechain.network.sync that return Block

Modifier and Type	Method	Description
Block	ForkResolver.heaviestBlock(List<Block> chain)	Returns the block with the greatest bits value in the chain.

Methods in com.privatechain.network.sync that return types with arguments of type Block

Modifier and Type	Method	Description
List<Block>	BlockFetcher.fetchBlocks(Peer peer, int fromHeight, int toHeight)	Fetches all blocks from fromHeight (inclusive) to toHeight (inclusive) from the given peer, in ascending order.
List<Block>	ForkResolver.resolveCanonical(List<Block> chainA, List<Block> chainB)	Selects the heavier chain from two competing chains.

Method parameters in com.privatechain.network.sync with type arguments of type Block

Modifier and Type	Method	Description
long	ForkResolver.cumulativeDifficulty(List<Block> chain)	Computes the cumulative difficulty of a chain as the sum of all block bits values.
Block	ForkResolver.heaviestBlock(List<Block> chain)	Returns the block with the greatest bits value in the chain.
List<Block>	ForkResolver.resolveCanonical(List<Block> chainA, List<Block> chainB)	Selects the heavier chain from two competing chains.
boolean	ForkResolver.shouldSwitchTo(List<Block> localChain, List<Block> candidateChain)	Returns true if the candidate chain should replace the local chain.

Uses of Block in com.privatechain.storage

Methods in com.privatechain.storage that return Block

Modifier and Type	Method	Description
static Block	BlockSerializer.fromBytes(byte[] bytes)	Deserializes a Block from a raw UTF-8 JSON byte array.
static Block	BlockSerializer.fromJson(String json)	Deserializes a Block from a UTF-8 JSON string.

Methods in com.privatechain.storage with parameters of type Block

Modifier and Type	Method	Description
static byte[]	BlockSerializer.toBytes(Block block)	Serializes a Block to its canonical UTF-8 JSON byte representation.
static String	BlockSerializer.toJson(Block block)	Serializes a Block to a UTF-8 JSON string.

Uses of Block in com.privatechain.storage.fs

Methods in com.privatechain.storage.fs that return Block

Modifier and Type	Method	Description
Block	FileSystemStorage.loadBlock(int index)	Retrieves a block by loading and deserializing its JSON file.

Methods in com.privatechain.storage.fs that return types with arguments of type Block

Modifier and Type	Method	Description
List<Block>	FileSystemStorage.loadAll()	Returns all stored blocks in ascending index order.
Optional<Block>	FileSystemStorage.loadBlockByHash(String hash)	Searches for a block by its SHA-256 hash.

Methods in com.privatechain.storage.fs with parameters of type Block

Modifier and Type	Method	Description
void	FileSystemStorage.saveBlock(Block block)	Persists a block as a JSON file using an atomic write-then-rename strategy.

Uses of Block in com.privatechain.storage.leveldb

Methods in com.privatechain.storage.leveldb that return Block

Modifier and Type	Method	Description
Block	LevelDBStorage.loadBlock(int index)	Retrieves a block by its index.

Methods in com.privatechain.storage.leveldb that return types with arguments of type Block

Modifier and Type	Method	Description
List<Block>	LevelDBStorage.loadAll()	Returns all stored blocks in ascending index order.
Optional<Block>	LevelDBStorage.loadBlockByHash(String hash)	Searches for a block by its SHA-256 hash.

Methods in com.privatechain.storage.leveldb with parameters of type Block

Modifier and Type	Method	Description
void	LevelDBStorage.saveBlock(Block block)	Persists a block atomically using a LevelDB WriteBatch.

Uses of Block in com.privatechain.storage.memory

Methods in com.privatechain.storage.memory that return Block

Modifier and Type	Method	Description
Block	InMemoryStorage.loadBlock(int index)	Retrieves a block by its zero-based index.

Methods in com.privatechain.storage.memory that return types with arguments of type Block

Modifier and Type	Method	Description
List<Block>	InMemoryStorage.loadAll()	Returns all stored blocks in ascending index order.
Optional<Block>	InMemoryStorage.loadBlockByHash(String hash)	Searches for a block by its SHA-256 hash using a constant-time comparison to prevent hash timing attacks (NFR-SEC-03).

Methods in com.privatechain.storage.memory with parameters of type Block

Modifier and Type	Method	Description
void	InMemoryStorage.saveBlock(Block block)	Persists a block to the in-memory store.

Uses of Block in com.privatechain.storage.rocksdb

Methods in com.privatechain.storage.rocksdb that return Block

Modifier and Type	Method	Description
Block	RocksDBStorage.loadBlock(int index)	Retrieves a block by its zero-based index.

Methods in com.privatechain.storage.rocksdb that return types with arguments of type Block

Modifier and Type	Method	Description
List<Block>	RocksDBStorage.loadAll()	Returns all stored blocks in ascending index order.
Optional<Block>	RocksDBStorage.loadBlockByHash(String hash)	Searches for a block by its SHA-256 hash.

Methods in com.privatechain.storage.rocksdb with parameters of type Block

Modifier and Type	Method	Description
void	RocksDBStorage.saveBlock(Block block)	Persists a block atomically using a RocksDB WriteBatch.