Struct bitcoin::blockdata::block::Header

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pub struct Header {
    pub version: Version,
    pub prev_blockhash: BlockHash,
    pub merkle_root: TxMerkleNode,
    pub time: u32,
    pub bits: CompactTarget,
    pub nonce: u32,
}
Expand description

Bitcoin block header.

Contains all the block’s information except the actual transactions, but including a root of a merkle tree commiting to all transactions in the block.

Bitcoin Core References

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§version: Version

Block version, now repurposed for soft fork signalling.

§prev_blockhash: BlockHash

Reference to the previous block in the chain.

§merkle_root: TxMerkleNode

The root hash of the merkle tree of transactions in the block.

§time: u32

The timestamp of the block, as claimed by the miner.

§bits: CompactTarget

The target value below which the blockhash must lie.

§nonce: u32

The nonce, selected to obtain a low enough blockhash.

Implementations§

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impl Header

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pub const SIZE: usize = 80usize

The number of bytes that the block header contributes to the size of a block.

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pub fn block_hash(&self) -> BlockHash

Returns the block hash.

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pub fn target(&self) -> Target

Computes the target (range [0, T] inclusive) that a blockhash must land in to be valid.

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pub fn difficulty(&self) -> u128

Computes the popular “difficulty” measure for mining.

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pub fn difficulty_float(&self) -> f64

Computes the popular “difficulty” measure for mining and returns a float value of f64.

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pub fn validate_pow( &self, required_target: Target ) -> Result<BlockHash, ValidationError>

Checks that the proof-of-work for the block is valid, returning the block hash.

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pub fn work(&self) -> Work

Returns the total work of the block.

Trait Implementations§

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impl Clone for Header

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fn clone(&self) -> Header

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Header

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Decodable for Header

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fn consensus_decode_from_finite_reader<R: Read + ?Sized>( r: &mut R ) -> Result<Header, Error>

Decode Self from a size-limited reader. Read more
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fn consensus_decode<R: Read + ?Sized>(r: &mut R) -> Result<Header, Error>

Decode an object with a well-defined format. Read more
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impl<'de> Deserialize<'de> for Header

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Encodable for Header

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fn consensus_encode<R: Write + ?Sized>(&self, r: &mut R) -> Result<usize, Error>

Encodes an object with a well-defined format. Read more
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impl From<&Header> for BlockHash

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fn from(header: &Header) -> BlockHash

Converts to this type from the input type.
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impl From<Header> for BlockHash

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fn from(header: Header) -> BlockHash

Converts to this type from the input type.
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impl Hash for Header

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for Header

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fn cmp(&self, other: &Header) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval. Read more
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impl PartialEq<Header> for Header

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fn eq(&self, other: &Header) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd<Header> for Header

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fn partial_cmp(&self, other: &Header) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Serialize for Header

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Copy for Header

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impl Eq for Header

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impl StructuralEq for Header

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impl StructuralPartialEq for Header

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> DeserializeOwned for Twhere T: for<'de> Deserialize<'de>,