[#PSBTInput]
= PSBTInput
:mrdocs:

A structure for PSBTs which contain per‐input information

== Synopsis

Declared in `<psbt.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class PSBTInput;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:PSBTInput/2constructor-08.adoc[`PSBTInput`]         [.small]#[constructor]#
| Constructors
| xref:PSBTInput/FillSignatureData.adoc[`FillSignatureData`] 
| Populate signature data from this input's fields.
| xref:PSBTInput/FromSignatureData.adoc[`FromSignatureData`] 
| Copy relevant fields from the given signature data into this input.
| xref:PSBTInput/GetOutPoint.adoc[`GetOutPoint`] 
| Return the outpoint this input spends.
| xref:PSBTInput/GetUTXO.adoc[`GetUTXO`] 
| Retrieves the UTXO for this input
| xref:PSBTInput/GetVersion.adoc[`GetVersion`] 
| Return the PSBT version of this input.
| xref:PSBTInput/HasSignatures.adoc[`HasSignatures`] 
| Report whether this input carries any signatures.
| xref:PSBTInput/Merge.adoc[`Merge`] 
| Merge another input's fields into this one.
| xref:PSBTInput/Serialize.adoc[`Serialize`] 
| Serialize this input to a stream.
| xref:PSBTInput/Unserialize.adoc[`Unserialize`] 
| Deserialize this input from a stream.
| xref:PSBTInput/operator_eq.adoc[`operator==`] 
| Compare two inputs for equality field by field.
|===


== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:PSBTInput/final_script_sig.adoc[`final_script_sig`] 
| The finalized scriptSig for this input.
| xref:PSBTInput/final_script_witness.adoc[`final_script_witness`] 
| The finalized script witness for this input.
| xref:PSBTInput/hash160_preimages.adoc[`hash160_preimages`] 
| HASH160 preimages keyed by their hash.
| xref:PSBTInput/hash256_preimages.adoc[`hash256_preimages`] 
| HASH256 preimages keyed by their hash.
| xref:PSBTInput/hd_keypaths.adoc[`hd_keypaths`] 
| BIP32 derivation paths keyed by public key.
| xref:PSBTInput/height_locktime.adoc[`height_locktime`] 
| The required height‐based locktime for this input (PSBTv2).
| xref:PSBTInput/m_musig2_partial_sigs.adoc[`m_musig2_partial_sigs`] 
| MuSig2 partial signatures; keyed by aggregate pubkey and script leaf hash, valued by participant pubkey to partial signature.
| xref:PSBTInput/m_musig2_participants.adoc[`m_musig2_participants`] 
| MuSig2 participant public keys keyed by aggregate public key.
| xref:PSBTInput/m_musig2_pubnonces.adoc[`m_musig2_pubnonces`] 
| MuSig2 public nonces; keyed by aggregate pubkey and script leaf hash, valued by participant pubkey to pubnonce.
| xref:PSBTInput/m_proprietary.adoc[`m_proprietary`] 
| Proprietary key‐value records.
| xref:PSBTInput/m_tap_bip32_paths.adoc[`m_tap_bip32_paths`] 
| Taproot BIP32 derivation paths keyed by x‐only public key.
| xref:PSBTInput/m_tap_internal_key.adoc[`m_tap_internal_key`] 
| Taproot internal key.
| xref:PSBTInput/m_tap_key_sig.adoc[`m_tap_key_sig`] 
| Taproot key‐path signature.
| xref:PSBTInput/m_tap_merkle_root.adoc[`m_tap_merkle_root`] 
| Taproot merkle root.
| xref:PSBTInput/m_tap_script_sigs.adoc[`m_tap_script_sigs`] 
| Taproot script‐path signatures keyed by output key and leaf hash.
| xref:PSBTInput/m_tap_scripts.adoc[`m_tap_scripts`] 
| Taproot leaf scripts keyed by control block and leaf version.
| xref:PSBTInput/non_witness_utxo.adoc[`non_witness_utxo`] 
| The full previous transaction for a non‐witness UTXO.
| xref:PSBTInput/partial_sigs.adoc[`partial_sigs`] 
| Partial signatures keyed by key id.
| xref:PSBTInput/prev_out.adoc[`prev_out`] 
| The previous output index spent by this input (PSBTv2).
| xref:PSBTInput/prev_txid.adoc[`prev_txid`] 
| The previous transaction id spent by this input (PSBTv2).
| xref:PSBTInput/redeem_script.adoc[`redeem_script`] 
| The redeem script for a P2SH input.
| xref:PSBTInput/ripemd160_preimages.adoc[`ripemd160_preimages`] 
| RIPEMD160 preimages keyed by their hash.
| xref:PSBTInput/sequence.adoc[`sequence`] 
| The input sequence number (PSBTv2).
| xref:PSBTInput/sha256_preimages.adoc[`sha256_preimages`] 
| SHA256 preimages keyed by their hash.
| xref:PSBTInput/sighash_type.adoc[`sighash_type`] 
| The sighash type requested for this input.
| xref:PSBTInput/time_locktime.adoc[`time_locktime`] 
| The required time‐based locktime for this input (PSBTv2).
| xref:PSBTInput/unknown.adoc[`unknown`] 
| Unknown key‐value pairs preserved across round‐trips.
| xref:PSBTInput/witness_script.adoc[`witness_script`] 
| The witness script for a P2WSH input.
| xref:PSBTInput/witness_utxo.adoc[`witness_utxo`] 
| The spent output for a witness UTXO.
|===


== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:PSBTInputSigned.adoc[`PSBTInputSigned`]
| Checks whether a PSBTInput is already signed by checking for non‐null finalized fields.
|===


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