Broadcast a signed Cosmos transaction

Submit a signed transaction to the Cosmos network for execution.

Broadcast Process:

1. Transaction is validated by network nodes
2. If valid, transaction enters the mempool
3. Block producers include transaction in next block
4. Transaction is executed and state is updated

Broadcast Modes:

• sync (recommended): Returns after CheckTx validation, includes transaction hash
• async: Returns immediately without validation (fastest)
• block: Waits for transaction to be included in a block (slowest)

After Broadcasting:

• Use the returned transaction hash to check status
• Transaction may take 5-10 seconds to be included in a block
• Failed transactions still consume gas fees
• Monitor transaction status for final confirmation

Common Failure Reasons:

• Insufficient gas or fees
• Invalid signature or malformed transaction
• Account sequence mismatch (transaction replay)
• Insufficient balance for operation
• Validator-specific constraints (delegation limits, etc.)