> ## Documentation Index
> Fetch the complete documentation index at: https://hedera-0c6e0218-mintlify-4a9eb0b1.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# SignatureMap

> Hedera protobuf reference for the SignatureMap message, a set of SignaturePair entries covering every unique public key that signs a Hashgraph transaction.

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. |