Input
scrypt-ts-opcat / Input
Class: Input
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:13
Creates an Input instance from parameters.
Param
Input parameters object
Param
Previous transaction ID (hex string or Buffer)
Param
Output index in previous transaction
Param
Output instance or output parameters
Param
Sequence number (defaults to DEFAULT_SEQNUMBER)
Param
Script instance, buffer or hex string
Constructors
new Input()
new Input(
params):Input
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:32
Creates an Input instance from parameters.
Parameters
params
Input parameters object
output?
Output instance or output parameters
outputIndex
number
Output index in previous transaction
prevTxId
string | Buffer
Previous transaction ID (hex string or Buffer)
script?
string | Script | Buffer
Script instance, buffer or hex string
sequenceNumber?
number
Sequence number (defaults to DEFAULT_SEQNUMBER)
Returns
New Input instance or initialized instance if params provided.
Properties
_script
_script:
Script
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:73
_scriptBuffer
_scriptBuffer:
Buffer
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:74
output
output:
Output
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:41
outputIndex
outputIndex:
any
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:43
prevTxId
prevTxId:
any
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:42
sequenceNumber
sequenceNumber:
any
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:44
toObject()
toObject: () =>
any
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:52
Converts the Input instance to a plain object for JSON serialization. Includes prevTxId, outputIndex, sequenceNumber, and script as hex strings. Optionally adds human-readable scriptString if script is valid, and includes the output object if present.
Returns
any
A plain object representation of the Input.
Accessors
script
Get Signature
get script():
any
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:39
Returns
any
Methods
addSignature()
abstractaddSignature(_transaction,_signature):void
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:112
Abstract method to add a signature to the transaction input. Must be implemented by concrete input types.
Parameters
_transaction
any
_signature
any
Returns
void
clearSignatures()
abstractclearSignatures():void
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:117
Clears all signatures from the input.
Returns
void
getPreimage()
getPreimage(
transaction,inputIndex,sigtype,isLowS):Buffer
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:92
Retrieve preimage for the Input.
Parameters
transaction
Transaction
the transaction to be signed
inputIndex
number
the index of this input in the provided transaction
sigtype
any
isLowS
boolean
true if the sig hash is safe for low s.
Returns
Buffer
getSignatures()
getSignatures(
transaction,privateKeys,inputIndex,sigtype):TransactionSignature[]
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:83
Retrieve signatures for the provided PrivateKey.
Parameters
transaction
Transaction
the transaction to be signed
privateKeys
the private key to use when signing
any[] | PrivateKey
inputIndex
number
the index of this input in the provided transaction
sigtype
any
Returns
isFinal()
isFinal():
boolean
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:104
Checks if the input is final (has maximum sequence number).
Returns
boolean
True if the input is final, false otherwise.
isFullySigned()
abstractisFullySigned():never
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:99
Abstract method that throws an error when invoked. Must be implemented by subclasses to determine if all required signatures are present on this input.
Returns
never
Throws
Always throws to indicate abstract method usage
isNull()
isNull():
boolean
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:130
Returns
boolean
true if this is a coinbase input (represents no input)
isValidSignature()
isValidSignature(
transaction,signature):boolean
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:126
Verifies if a signature is valid for this input in the given transaction. Note: Temporarily modifies the signature object by setting nhashtype from sigtype.
Parameters
transaction
any
The transaction to verify against
signature
Signature object containing signature, publicKey, etc.
Returns
boolean
True if the signature is valid, false otherwise
setScript()
setScript(
script):Input
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:72
Sets the script for this input.
Parameters
script
Can be a Script object, hex string, human-readable string, Buffer, or null (for empty script)
string | Script | Buffer
Returns
Returns the Input instance for chaining
Throws
If script is of invalid type
toBufferWriter()
toBufferWriter(
hashScriptSig,writer?):BufferWriter
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:60
Serializes the input to a BufferWriter.
Parameters
hashScriptSig
boolean
Whether to hash the script (true) or include it directly (false).
writer?
Optional BufferWriter instance to write to.
Returns
The BufferWriter containing the serialized input.
toJSON()
toJSON():
any
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:53
Returns
any
toPrevout()
toPrevout():
Buffer
Defined in: node_modules/@opcat-labs/opcat/types/transaction/input/input.d.cts:65
Converts the input to a prevout format (txid + output index) as a buffer.
Returns
Buffer
The serialized prevout data.