> ## Documentation Index
> Fetch the complete documentation index at: https://docs.qu.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Signature

A Signature

## TODO

## Accessors

### compactSerialized

```ts theme={null}
get compactSerialized(): string
```

The [EIP-2098](https://eips.ethereum.org/EIPS/eip-2098) compact representation.

#### Returns

`string`

#### Source

[crypto/signature.ts:161](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L161)

***

### legacyChainId

```ts theme={null}
get legacyChainId(): null | bigint
```

The chain ID for EIP-155 legacy transactions. For non-legacy transactions, this value is `null`.

#### Returns

`null` | `bigint`

#### Source

[crypto/signature.ts:128](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L128)

***

### networkV

```ts theme={null}
get networkV(): null | bigint
```

The EIP-155 `v` for legacy transactions. For non-legacy transactions, this value is `null`.

#### Returns

`null` | `bigint`

#### Source

[crypto/signature.ts:121](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L121)

***

### r

```ts theme={null}
get r(): string
```

The `r` value for a signautre.

This represents the `x` coordinate of a "reference" or challenge point, from which the `y` can be computed.

#### Returns

`string`

#### Source

[crypto/signature.ts:80](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L80)

***

### s

```ts theme={null}
get s(): string
```

The `s` value for a signature.

#### Returns

`string`

#### Source

[crypto/signature.ts:91](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L91)

***

### serialized

```ts theme={null}
get serialized(): string
```

The serialized representation.

#### Returns

`string`

#### Source

[crypto/signature.ts:168](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L168)

***

### v

```ts theme={null}
get v(): 27 | 28
```

The `v` value for a signature.

Since a given `x` value for `r` has two possible values for its correspondin `y`, the `v` indicates which of the
two `y` values to use.

It is normalized to the values `27` or `28` for legacy purposes.

#### Returns

`27` | `28`

#### Source

[crypto/signature.ts:109](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L109)

***

### yParity

```ts theme={null}
get yParity(): 0 | 1
```

The `yParity` for the signature.

See `v` for more details on how this value is used.

#### Returns

`0` | `1`

#### Source

[crypto/signature.ts:141](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L141)

***

### yParityAndS

```ts theme={null}
get yParityAndS(): string
```

The [EIP-2098](https://eips.ethereum.org/EIPS/eip-2098) compact representation of the `yParity` and `s` compacted
into a single `bytes32`.

#### Returns

`string`

#### Source

[crypto/signature.ts:149](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L149)

## Methods

### clone()

```ts theme={null}
clone(): Signature
```

Returns a new identical [**Signature**](/sdk/content/classes/Signature).

#### Returns

[`Signature`](/sdk/content/classes/Signature)

#### Source

[crypto/signature.ts:190](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L190)

***

### toJSON()

```ts theme={null}
toJSON(): any
```

Returns a representation that is compatible with `JSON.stringify`.

#### Returns

`any`

#### Source

[crypto/signature.ts:201](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L201)

***

### from()

```ts theme={null}
static from(sig?): Signature
```

Creates a new [**Signature**](/sdk/content/classes/Signature).

If no `sig` is provided, a new [**Signature**](/sdk/content/classes/Signature) is created with default values.

If `sig` is a string, it is parsed.

#### Parameters

| Parameter | Type                                                       | Description              |
| :-------- | :--------------------------------------------------------- | :----------------------- |
| `sig`?    | [`SignatureLike`](/sdk/content/type-aliases/SignatureLike) | The signature to create. |

#### Returns

[`Signature`](/sdk/content/classes/Signature)

The new signature.

#### Source

[crypto/signature.ts:312](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L312)

***

### getChainId()

```ts theme={null}
static getChainId(v): bigint
```

Compute the chain ID from the `v` in a legacy EIP-155 transactions.

#### Parameters

| Parameter | Type                                                     | Description                       |
| :-------- | :------------------------------------------------------- | :-------------------------------- |
| `v`       | [`BigNumberish`](/sdk/content/type-aliases/BigNumberish) | The `v` value from the signature. |

#### Returns

`bigint`

The chain ID.

#### Example

```ts theme={null}
Signature.getChainId(45);

Signature.getChainId(46);
```

#### Source

[crypto/signature.ts:226](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L226)

***

### getChainIdV()

```ts theme={null}
static getChainIdV(chainId, v): bigint
```

Compute the `v` for a chain ID for a legacy EIP-155 transactions.

Legacy transactions which use [EIP-155](https://eips.ethereum.org/EIPS/eip-155) hijack the `v` property to
include the chain ID.

#### Parameters

| Parameter | Type                                                     | Description    |
| :-------- | :------------------------------------------------------- | :------------- |
| `chainId` | [`BigNumberish`](/sdk/content/type-aliases/BigNumberish) | The chain ID.  |
| `v`       | `27` \| `28`                                             | The `v` value. |

#### Returns

`bigint`

The `v` value.

#### Example

```ts theme={null}
Signature.getChainIdV(5, 27);

Signature.getChainIdV(5, 28);
```

#### Source

[crypto/signature.ts:258](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L258)

***

### getNormalizedV()

```ts theme={null}
static getNormalizedV(v): 27 | 28
```

Compute the normalized legacy transaction `v` from a `yParirty`, a legacy transaction `v` or a legacy
[EIP-155](https://eips.ethereum.org/EIPS/eip-155) transaction.

#### Parameters

| Parameter | Type                                                     | Description    |
| :-------- | :------------------------------------------------------- | :------------- |
| `v`       | [`BigNumberish`](/sdk/content/type-aliases/BigNumberish) | The `v` value. |

#### Returns

`27` | `28`

The normalized `v` value.

#### Example

```ts theme={null}
// The values 0 and 1 imply v is actually yParity
Signature.getNormalizedV(0);

// Legacy non-EIP-1559 transaction (i.e. 27 or 28)
Signature.getNormalizedV(27);

// Legacy EIP-155 transaction (i.e. >= 35)
Signature.getNormalizedV(46);

// Invalid values throw
Signature.getNormalizedV(5);
```

#### Throws

Thrown if the `v` is invalid.

#### Source

[crypto/signature.ts:286](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/crypto/signature.ts#L286)