# [−] [src] Enum verification::Error

    pub enum Error {
        Duplicate,
        DuplicatedTransactions,
        Empty,
        Pow,
        FuturisticTimestamp,
        Timestamp,
        Coinbase,
        Transaction(usize, TransactionError),
        Difficulty {
            expected: Compact,
            actual: Compact,
        },
        MerkleRoot,
        CoinbaseOverspend {
            expected_max: u64,
            actual: u64,
        },
        CoinbaseScript,
        MaximumSigops,
        MaximumSigopsCost,
        CoinbaseSignatureLength(usize),
        Size(usize),
        Weight,
        NonFinalBlock,
        OldVersionBlock,
        TransactionFeeAndRewardOverflow,
        TransactionFeesOverflow,
        ReferencedInputsSumOverflow,
        WitnessInvalidNonceSize,
        WitnessMerkleCommitmentMismatch,
        UnexpectedWitness,
        NonCanonicalTransactionOrdering,
        Database(DBError),
    }

All possible verification errors

## Variants

`Duplicate`

has an equal duplicate in the chain

`DuplicatedTransactions`

Contains duplicated transactions

`Empty`

No transactions in block

`Pow`

Invalid proof-of-work (Block hash does not satisfy nBits)

`FuturisticTimestamp`

Futuristic timestamp

`Timestamp`

Invalid timestamp

`Coinbase`

First transaction is not a coinbase transaction

`Transaction(usize, TransactionError)`

One of the transactions is invalid (corresponding index and specific transaction error)

`Difficulty`

nBits do not match difficulty rules

### Fields of `Difficulty`

`expected: Compact` |
`actual: Compact` |

`MerkleRoot`

Invalid merkle root

`CoinbaseOverspend`

Coinbase spends too much

### Fields of `CoinbaseOverspend`

`expected_max: u64` |
`actual: u64` |

`CoinbaseScript`

Coinbase has invalid script sig prefix (BIP90 -> BIP34)

`MaximumSigops`

Maximum sigops operations exceeded - will not provide how much it was in total since it stops counting once `MAX_BLOCK_SIGOPS` is reached

`MaximumSigopsCost`

Maximum sigops operations cost exceeded

`CoinbaseSignatureLength(usize)`

Coinbase signature is not in the range 2-100

`Size(usize)`

Block size is invalid

`Weight`

Block weight is invalid

`NonFinalBlock`

Block transactions are not final.

`OldVersionBlock`

Old version block.

`TransactionFeeAndRewardOverflow`

Sum of the transaction fees in block + coinbase reward exceeds u64::max

`TransactionFeesOverflow`

Sum of the transaction fees in block exceeds u64::max

`ReferencedInputsSumOverflow`

Sum of all referenced outputs in block transactions resulted in the overflow

`WitnessInvalidNonceSize`

SegWit: bad witess nonce size

`WitnessMerkleCommitmentMismatch`

SegWit: witness merkle mismatch

`UnexpectedWitness`

SegWit: unexpected witness

`NonCanonicalTransactionOrdering`

Non-canonical tranasctions ordering within block

`Database(DBError)`

Database error

## Trait Implementations

###

`impl Debug for Error`

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####

`fn fmt(&self, f: &mut Formatter) -> Result`

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Formats the value using the given formatter. Read more

###

`impl PartialEq for Error`

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####

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

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This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

####

`fn ne(&self, other: &Error) -> bool`

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This method tests for `!=`.

###

`impl From<DBError> for Error`

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####

`fn from(err: DBError) -> Self`

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Performs the conversion.

## Auto Trait Implementations

###

`impl Send for Error`

###

`impl Sync for Error`

## Blanket Implementations

###

`impl<T> From for T`

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####

`fn from(t: T) -> T`

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Performs the conversion.

###

`impl<T, U> Into for T where U: From<T>,`

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####

`fn into(self) -> U`

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Performs the conversion.

###

`impl<T, U> TryFrom for T where T: From<U>,`

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#### `type Error = !`

🔬 This is a nightly-only experimental API. (`try_from`)

The type returned in the event of a conversion error.

####

`fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`

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🔬 This is a nightly-only experimental API. (`try_from`)

Performs the conversion.

###

`impl<T> Borrow for T where T: ?Sized,`

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####
ⓘImportant traits for &'a mut R

### Important traits for &'a mut R

`impl<'a, R> Read for &'a mut R where
R: Read + ?Sized, impl<'a, W> Write for &'a mut W where
W: Write + ?Sized, impl<'a, I> Iterator for &'a mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;`

`fn borrow(&self) -> &T`

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Immutably borrows from an owned value. Read more

###

`impl<T, U> TryInto for T where U: TryFrom<T>,`

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

🔬 This is a nightly-only experimental API. (`try_from`)

The type returned in the event of a conversion error.

####

`fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`

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🔬 This is a nightly-only experimental API. (`try_from`)

Performs the conversion.

###

`impl<T> BorrowMut for T where T: ?Sized,`

[src]

####
ⓘImportant traits for &'a mut R

### Important traits for &'a mut R

`impl<'a, R> Read for &'a mut R where
R: Read + ?Sized, impl<'a, W> Write for &'a mut W where
W: Write + ?Sized, impl<'a, I> Iterator for &'a mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;`

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

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Mutably borrows from an owned value. Read more

###

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

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####

`fn get_type_id(&self) -> TypeId`

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🔬 This is a nightly-only experimental API. (`get_type_id`)

this method will likely be replaced by an associated static

Gets the `TypeId` of `self`. Read more

###

`impl<T> Erased for T`

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