:Block

:StateTransition
- :Block
  - :GenesisBlock
  - :Uncle

URI

http://ethon.consensys.net/Block

Label

Block

Description

A block is the basic element of a 'blockchain'. It functions as an entry in a distributed ledger, recording a series of transactions together with a reference to the previous block. A block is chained to its preceeding block by a cryptographic hash of its contents as a means of reference. Blocks contain an identifier for the final state after all transactions contained in it are validated. There is a consensus mechanism that provides incentives for nodes adding new blocks to the chain ("miners" in the Proof of Work protocol used by the main Ethereum network) that comply with the rules of Ethereum by issuing newly generated tokens ('Ether') to an account specified by the block's author.

Superclasses (1)

:StateTransition

Usage

Instances of :Block can have the following properties:

PROPERTY	TYPE	DESCRIPTION	RANGE
From class :Block
:hasParentBlock	owl:AsymmetricProperty	Relates a block to its parent in the chain. It always points to the block with a number that is decreased by one, compared to the block it originates from. The relation is asymmetric because if block A is parent to block B then block B can not be parent to block A. It is also irreflexive because a block cannot be parent to itself.	:Block
:blockBeneficiaryReward	owl:DatatypeProperty	The reward the beneficiary receives for mining a block. It is comprised of the base reward (5ETH), rewards for including uncles (1/32 of block reward per uncle) and the fees of the Tx in the block.	xsd:integer
:blockCreationTime	owl:DatatypeProperty	This block's inception date and time.	xsd:dateTime
:blockDifficulty	owl:DatatypeProperty	The difficulty level of this block.	xsd:integer
:blockExtraData	owl:DatatypeProperty	An arbitrary byte array containing data relevant to this block. This must be 32 bytes or fewer.	xsd:hexBinary
:blockGasLimit	owl:DatatypeProperty	A scalar value equal to the current limit of gas expenditure per block. Its purpose is to keep block propagation and processing time low, thereby allowing for a sufficiently decentralized network. Miners have the option to increase or decrease it every block by a certain factor.	xsd:integer
:blockGasUsed	owl:DatatypeProperty	A scalar value equal to the total gas used by all transactions in this block.	xsd:integer
:blockHash	owl:DatatypeProperty	The Keccak 256-bit hash of the block's header, in its entierty.	xsd:hexBinary
:blockHeader	owl:DatatypeProperty	Relates a block to its block header data. The block header data contains 15 pieces of information: 1. the parent hash, 2. the Uncle hash, 3. a beneficiary address, 4. a state root hash, 5. a transactions root hash, 6. a receipts root hash, 7. a log bloom filter, 8. the difficulty value, 9. the block number, 10. the gas limit of the block, 11. the gas used by all transactions in the block, 12. a scalar timestamp in unix time() format, 13. a byte array containing extra data, 14. a mix hash and 15. the block nonce. The property is functional because a block can have only exactly one block header.	xsd:hexBinary
:blockLogsBloom	owl:DatatypeProperty	The bloom filter of log entries resulting from the transactions in the block. The bloom filter helps to identify blocks with logs quickly. To find the indexed log entries from a contract, only the bloom filters of all blocks, which are included in the block header have to be checked. Note that bloom filters can produce false positives but not false negatives. In other words, if the bloom filter indicates that the topic and contract have not produced any logs in a block, this information is final. If the bloom filter indicates a match, it is only a probabilistic result and has to be verified further. The transactions in the block can then be re-executed and the probabilistic match of the bloom filter can be verified.	xsd:hexBinary
:blockMixHash	owl:DatatypeProperty	A 256-bit hash which proves combined with the nonce that a sufficient amount of computation has been carried out on this block.	xsd:hexBinary
:blockNonce	owl:DatatypeProperty	A 64 bit hash which proves combined with the mix-hash that a sufficient amount of computation has been carried out on this block.	xsd:hexBinary
:blockSize	owl:DatatypeProperty	The size of the block header in RLP format in bytes.	xsd:integer
:number	owl:DatatypeProperty	A scalar value equal to the number of ancestor blocks. The genesis block has a number of zero.	xsd:integer
:totalBlockDifficulty	owl:DatatypeProperty	The difficulty of the total chain until this block.	xsd:integer
:createsPostBlockState	owl:FunctionalProperty	Relates a block to the global state of the system after all transactions in the block have been executed.	:WorldState
:hasAuthorBeneficiary	owl:FunctionalProperty	Relates a block to an account to which the fees from gas costs, the static mining reward and the reward for including uncles are transferred.	:Account
:hasReceiptsTrie	owl:FunctionalProperty	Relates a block to the trie that contains the block's receipt data.	:ReceiptsTrie
:hasTxTrie	owl:FunctionalProperty	Relates a block to the trie that contains the data of the transactions contained in the block.	:TxTrie
:containsTx	owl:InverseFunctionalProperty	Relates a block to a transaction included in it. All containsTx relations of a block comprise the block's transaction list. The order of the transactions is determined by their index value. The property is inverse functional because a transaction can only be included in one block.	:Tx
:conformsTo	owl:ObjectProperty	Relates a Block to the protocol variant it conforms to.	:ProtocolVariant
:hasBeneficiary	owl:ObjectProperty	Relates a block to an account to which fees or mining rewards from the successful mining of this block are transferred.	:Account
:hasUncleBeneficiary	owl:ObjectProperty	Relates a block to an account to which the reward for mining an uncle is transferred.	:Account
:includesUncle	owl:ObjectProperty	Relates a block to another block by including it as an uncle. Block B can be an uncle of block A if it is the direct child of the k'th generation ancestor of block B, where 2<=k<=7 but not a direct ancestor of block A. Uncles are blocks found by a miner, when a different miner has already found another block for the corresponding place in the blockchain. They are also known as “stale blocks”.	:Uncle
From class :StateTransition
:createsState	owl:ObjectProperty	Relates a transition to the state it creates.	:State
From class owl:Thing
:AccountDataProperty	owl:DatatypeProperty	Groups all data properties that are specific to an account.	owl:Thing
:AccountObjectProperty	owl:ObjectProperty	Groups all EthOn account object properties	owl:Thing
:BlockDataProperty	owl:DatatypeProperty	Groups all data properties that are specific to a block. These properties are usually functional because a block can only be associated with a single instance of them.	owl:Thing
:BlockObjectProperty	owl:ObjectProperty	Groups all EthOn block object properties	owl:Thing
:EthOnAnnotationProperty	owl:AnnotationProperty	Superclass of all EthOn specific annotation properties.	owl:Thing
:EthOnDataProperty	owl:DatatypeProperty	Groups all data properties specific to EthOn.	owl:Thing
:EthOnObjectProperty	owl:ObjectProperty	Groups all EthOn object properties	owl:Thing
:MessageDataProperty	owl:DatatypeProperty	Groups all EthOn message data properties.	owl:Thing
:MessageObjectProperty	owl:ObjectProperty	Groups all EthOn message object properties.	owl:Thing
:NetworkDataProperty	owl:DatatypeProperty	Groups all EthOn network data properties.	owl:Thing
:NetworkObjectProperty	owl:ObjectProperty	Groups all EthOn network object properties.	owl:Thing
:StateDataProperty	owl:DatatypeProperty	--	owl:Thing
:StateObjectProperty	owl:ObjectProperty	Groups all EthOn state object properties.	owl:Thing
:createsPostMsgState	owl:FunctionalProperty	Relates a message to the global state of the system after all the message has been executed.	owl:Thing
:hasAccountStorage	owl:FunctionalProperty	Relates an account to the Merkle Patricia tree that encodes its storage contents at a certain account state. This property is Functional because an account state can have only one instance of account storage and inverse functional because an account storage can have only one associated account state.	:AccountStorage
:hasTransition	owl:ObjectProperty	Relates a state to a transition (i.e. a message) that creates a new state.	owl:Thing
:partOf	owl:ObjectProperty	This is a general relation to express part of relationships. The classic study of parts and wholes, mereology, has three axioms: 1. the part-of relation is Transitive - "parts of parts are parts of the whole" - If A is part of B and B is part of C, then A is part of C Reflexive - "Everything is part of itself" - A is part of A Antisymmetric - "Nothing is a part of its parts" - if A is part of B and A != B then B is not part of A.	owl:Thing
:simpleDefinition	owl:AnnotationProperty	This property relates an EthOn class to a definition in Simple English, intended especially for non-technical users.	owl:Thing
:suggestedStringRepresentation	owl:AnnotationProperty	This property relates an EthOn class with a suggested string representation. It can be used to give the term a name, e.g. in program code.	owl:Thing

Implementation

@prefix : <http://ethon.consensys.net/> .
@prefix ns: <http://www.w3.org/2003/06/sw-vocab-status/ns#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

:Block a owl:Class ;
    rdfs:label "Block"@en ;
    :simpleDefinition "A block is an entry in a blockchain. It contains a series of transactions as well as a cryptographic hash linking it to the previous block in the chain." ;
    :suggestedStringRepresentation "Block"@en ;
    rdfs:comment "A block is the basic element of a 'blockchain'. It functions as an entry in a distributed ledger, recording a series of transactions together with a reference to the previous block. A block is chained to its preceeding block by a cryptographic hash of its contents as a means of reference. Blocks contain an identifier for the final state after all transactions contained in it are validated. There is a consensus mechanism that provides incentives for nodes adding new blocks to the chain (\"miners\" in the Proof of Work protocol used by the main Ethereum network) that comply with the rules of Ethereum by issuing newly generated tokens ('Ether') to an account specified by the block's author."@en ;
    rdfs:subClassOf :StateTransition ;
    owl:hasKey [ a rdf:List ;
            rdf:first :blockHash ;
            rdf:rest () ] ;
    ns:term_status "unstable" .