ScriptPattern (core 0.15 API)

java.lang.Object
- org.bitcoinj.script.ScriptPattern

```
public class ScriptPattern
extends java.lang.Object
```
This is a Script pattern matcher with some typical script patterns

Constructor Summary

Constructors
Constructor and Description

ScriptPattern()

Constructors
Constructor and Description
`ScriptPattern()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static java.math.BigInteger`	`extractExpiryFromCltvPaymentChannel(Script script)` Retrieves the locktime from a LOCKTIMEVERIFY transaction.
`static byte[]`	`extractHashFromP2PKH(Script script)` Extract the pubkey hash from a P2PKH scriptPubKey.
`static byte[]`	`extractHashFromP2SH(Script script)` Extract the script hash from a P2SH scriptPubKey.
`static byte[]`	`extractHashFromP2WH(Script script)` Extract the pubkey hash from a P2WPKH or the script hash from a P2WSH scriptPubKey.
`static byte[]`	`extractKeyFromP2PK(Script script)` Extract the pubkey from a P2SH scriptPubKey.
`static byte[]`	`extractRecipientPubKeyFromCltvPaymentChannel(Script script)` Retrieves the public key of the recipient from a LOCKTIMEVERIFY transaction.
`static byte[]`	`extractSenderPubKeyFromCltvPaymentChannel(Script script)` Retrieves the public key of the sender from a LOCKTIMEVERIFY transaction.
`static Sha256Hash`	`extractWitnessCommitmentHash(Script script)` Retrieves the hash from a segwit commitment (in an output of the coinbase transaction).
`static boolean`	`isOpReturn(Script script)` Returns whether this script is using OP_RETURN to store arbitrary data.
`static boolean`	`isP2PK(Script script)` Returns true if this script is of the form `<pubkey> OP_CHECKSIG`.
`static boolean`	`isP2PKH(Script script)` Returns true if this script is of the form `DUP HASH160 <pubkey hash> EQUALVERIFY CHECKSIG`, ie, payment to an address like `1VayNert3x1KzbpzMGt2qdqrAThiRovi8`.
`static boolean`	`isP2SH(Script script)` Whether or not this is a scriptPubKey representing a P2SH output.
`static boolean`	`isP2WH(Script script)` Returns true if this script is of the form `OP_0 <hash>`.
`static boolean`	`isP2WPKH(Script script)` Returns true if this script is of the form `OP_0 <hash>` and hash is 20 bytes long.
`static boolean`	`isP2WSH(Script script)` Returns true if this script is of the form `OP_0 <hash>` and hash is 32 bytes long.
`static boolean`	`isSentToCltvPaymentChannel(Script script)` Returns whether this script matches the format used for LOCKTIMEVERIFY transactions.
`static boolean`	`isSentToMultisig(Script script)` Returns whether this script matches the format used for multisig outputs: `[n] [keys...] [m] CHECKMULTISIG`
`static boolean`	`isWitnessCommitment(Script script)` Returns whether this script matches the pattern for a segwit commitment (in an output of the coinbase transaction).

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ScriptPattern
```
public ScriptPattern()
```
- Method Detail
  - isP2PKH
```
public static boolean isP2PKH(Script script)
```
    Returns true if this script is of the form DUP HASH160 <pubkey hash> EQUALVERIFY CHECKSIG, ie, payment to an address like 1VayNert3x1KzbpzMGt2qdqrAThiRovi8. This form was originally intended for the case where you wish to send somebody money with a written code because their node is offline, but over time has become the standard way to make payments due to the short and recognizable base58 form addresses come in.
  - extractHashFromP2PKH
```
public static byte[] extractHashFromP2PKH(Script script)
```
    Extract the pubkey hash from a P2PKH scriptPubKey. It's important that the script is in the correct form, so you will want to guard calls to this method with isP2PKH(Script).
  - isP2SH
```
public static boolean isP2SH(Script script)
```
    Whether or not this is a scriptPubKey representing a P2SH output. In such outputs, the logic that controls reclamation is not actually in the output at all. Instead there's just a hash, and it's up to the spending input to provide a program matching that hash.
    
    P2SH is described by BIP16.
  - extractHashFromP2SH
```
public static byte[] extractHashFromP2SH(Script script)
```
    Extract the script hash from a P2SH scriptPubKey. It's important that the script is in the correct form, so you will want to guard calls to this method with isP2SH(Script).
  - isP2PK
```
public static boolean isP2PK(Script script)
```
    Returns true if this script is of the form <pubkey> OP_CHECKSIG. This form was originally intended for transactions where the peers talked to each other directly via TCP/IP, but has fallen out of favor with time due to that mode of operation being susceptible to man-in-the-middle attacks. It is still used in coinbase outputs and can be useful more exotic types of transaction, but today most payments are to addresses.
  - extractKeyFromP2PK
```
public static byte[] extractKeyFromP2PK(Script script)
```
    Extract the pubkey from a P2SH scriptPubKey. It's important that the script is in the correct form, so you will want to guard calls to this method with isP2PK(Script).
  - isP2WH
```
public static boolean isP2WH(Script script)
```
    Returns true if this script is of the form OP_0 <hash>. This can either be a P2WPKH or P2WSH scriptPubKey. These two script types were introduced with segwit.
  - isP2WPKH
```
public static boolean isP2WPKH(Script script)
```
    Returns true if this script is of the form OP_0 <hash> and hash is 20 bytes long. This can only be a P2WPKH scriptPubKey. This script type was introduced with segwit.
  - isP2WSH
```
public static boolean isP2WSH(Script script)
```
    Returns true if this script is of the form OP_0 <hash> and hash is 32 bytes long. This can only be a P2WSH scriptPubKey. This script type was introduced with segwit.
  - extractHashFromP2WH
```
public static byte[] extractHashFromP2WH(Script script)
```
    Extract the pubkey hash from a P2WPKH or the script hash from a P2WSH scriptPubKey. It's important that the script is in the correct form, so you will want to guard calls to this method with isP2WH(Script).
  - isSentToMultisig
```
public static boolean isSentToMultisig(Script script)
```
    Returns whether this script matches the format used for multisig outputs: [n] [keys...] [m] CHECKMULTISIG
  - isSentToCltvPaymentChannel
```
public static boolean isSentToCltvPaymentChannel(Script script)
```
    Returns whether this script matches the format used for LOCKTIMEVERIFY transactions.
  - extractSenderPubKeyFromCltvPaymentChannel
```
public static byte[] extractSenderPubKeyFromCltvPaymentChannel(Script script)
```
    Retrieves the public key of the sender from a LOCKTIMEVERIFY transaction. It's important that the script is in the correct form, so you will want to guard calls to this method with isSentToCltvPaymentChannel(Script).
  - extractRecipientPubKeyFromCltvPaymentChannel
```
public static byte[] extractRecipientPubKeyFromCltvPaymentChannel(Script script)
```
    Retrieves the public key of the recipient from a LOCKTIMEVERIFY transaction. It's important that the script is in the correct form, so you will want to guard calls to this method with isSentToCltvPaymentChannel(Script).
  - extractExpiryFromCltvPaymentChannel
```
public static java.math.BigInteger extractExpiryFromCltvPaymentChannel(Script script)
```
    Retrieves the locktime from a LOCKTIMEVERIFY transaction. It's important that the script is in the correct form, so you will want to guard calls to this method with isSentToCltvPaymentChannel(Script).
  - isOpReturn
```
public static boolean isOpReturn(Script script)
```
    Returns whether this script is using OP_RETURN to store arbitrary data.
  - isWitnessCommitment
```
public static boolean isWitnessCommitment(Script script)
```
    Returns whether this script matches the pattern for a segwit commitment (in an output of the coinbase transaction).
  - extractWitnessCommitmentHash
```
public static Sha256Hash extractWitnessCommitmentHash(Script script)
```
    Retrieves the hash from a segwit commitment (in an output of the coinbase transaction).

Class ScriptPattern

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ScriptPattern

Method Detail

isP2PKH

extractHashFromP2PKH

isP2SH

extractHashFromP2SH

isP2PK

extractKeyFromP2PK

isP2WH

isP2WPKH

isP2WSH

extractHashFromP2WH

isSentToMultisig

isSentToCltvPaymentChannel

extractSenderPubKeyFromCltvPaymentChannel

extractRecipientPubKeyFromCltvPaymentChannel

extractExpiryFromCltvPaymentChannel

isOpReturn

isWitnessCommitment

extractWitnessCommitmentHash