# Broadcast signed transaction

Broadcast a signed transaction to the network.
Returns the transaction hash and submission status.

Endpoint: POST /v1/chain/broadcast
Version: 2.0.0
Security: oAuth2

## Request fields (application/json):

  - `network` (string, required)
    Enum: "ethereum", "polygon", "solana", "bitcoin"

  - `signedTx` (string, required)
    Raw signed transaction (hex encoded).

## Response 200 fields (application/json):

  - `hash` (string, required)
    Transaction hash
    Example: "0xabc..."

  - `status` (string, required)
    Enum: "submitted"

## Response 400 fields (application/json):

  - `traceId` (string, required)
    Correlation id for troubleshooting
    Example: "trc_01JH8K5P3V9M2K5Q7W6J3Z1A9B"

  - `error` (object, required)

  - `error.code` (string)
    Example: "INVALID_REQUEST"

  - `error.message` (string)
    Example: "Invalid webhook URL"

  - `error.details` (object)


## Response 401 fields