> ## Documentation Index
> Fetch the complete documentation index at: https://hedera-0c6e0218-mintlify-bc559771.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# SignatureMap

> SignatureMap is the Hedera protobuf message that groups all SignaturePair entries used to sign a transaction, one per unique public key prefix.

A set of signatures corresponding to every unique public key used to sign a given transaction.

| Field     | Type                                                              | Description                                                                       |
| --------- | ----------------------------------------------------------------- | --------------------------------------------------------------------------------- |
| `sigPair` | ​[SignaturePair](/reference/protobuf/basic-types/signature-pair)​ | Each signature pair corresponds to a unique Key required to sign the transaction. |