chain

getBlock(hash?: BlockHash): SignedBlock

• interface: api.rpc.chain.getBlock

• jsonrpc: chain_getBlock

• summary: Gets the header and body of the target chain block

getBlockHash(blockNumber?: BlockNumber): BlockHash

• interface: api.rpc.chain.getBlockHash

• jsonrpc: chain_getBlockHash (alias=chain_getHead)

• summary: Gets the block hash for a specific block

getFinalizedHead(): BlockHash

• interface: api.rpc.chain.getFinalizedHead

• jsonrpc: chain_getFinalizedHead (alias=chain_getFinalisedHead)

• summary: Gets hash of the last finalized block in the canon chain

getHeader(hash?: BlockHash): Header

• interface: api.rpc.chain.getHeader

• jsonrpc: chain_getHeader

• summary: Retrieves the header for a specific block

subscribeAllHeads(): Header

• interface: api.rpc.chain.subscribeAllHeads

• jsonrpc: chain_subscribeAllHeads

• summary: Retrieves the newest header via subscription

subscribeFinalizedHeads(): Header

• interface: api.rpc.chain.subscribeFinalizedHeads

• jsonrpc: chain_subscribeFinalizedHeads (alias=chain_subscribeFinalisedHeads)

• summary: Retrieves the best finalized header via subscription.

subscribeNewHeads(): Header

• interface: api.rpc.chain.subscribeNewHeads

• jsonrpc: chain_subscribeNewHeads (alias=chain_subscribeNewHead)

• summary: Retrieves the best header via subscription.