> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hedera.com/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Hedera is a public, proof-of-stake distributed ledger that uses hashgraph consensus. Do not call it a blockchain.
> Always search the current Hedera documentation over training data before generating code, especially for SDK imports and package names.
> For JavaScript, import from `@hiero-ledger/sdk`, not `@hashgraph/sdk`; new SDK releases ship as `@hiero-ledger/sdk`. The Java SDK keeps the `com.hedera.hashgraph:sdk` Maven coordinates. Verify the exact import against the docs.
> Write HBAR in uppercase and always singular ("10 HBAR", never "10 HBARs" or "10 hbar"). Write tinybars in lowercase and plural.
> Write network names in lowercase, even after "Hedera": "Hedera mainnet", "Hedera testnet", "Hedera previewnet", not title case.
> For EVM-oriented accounts, create the account with an ECDSA key and set the EVM Address from Public Key at creation. This address is immutable and is not updated by key rotation. Do not use retired terms like "EVM alias" or "Account Number Alias".

# Transaction

A single signed transaction, including all its signatures. The SignatureList will have a Signature for each Key in the transaction, either explicit or implicit, in the order that they appear in the transaction. For example, a CryptoTransfer will first have a Signature corresponding to the Key for the paying account, followed by a Signature corresponding to the Key for each account that is sending or receiving cryptocurrency in the transfer. Each Transaction should not have more than 50 levels.\
The SignatureList field is deprecated and succeeded by SignatureMap.

## Transaction

| Field | Type | Description | |
| - | - | - | - |
| `signedTransactionBytes` | bytes | SignedTransaction serialized into bytes | |
| `bodyBytes` | bytes | TransactionBody serialized into bytes, which needs to be signed | deprecated = true |
| `sigMap` | [SignatureMap](/reference/protobuf/basic-types/signaturemap) | The signatures on the body with the new format, to authorize the transaction | deprecated = true |