Create, Generate, and Sign Txs

There are multiple ways you can create, generate, and sign transactions.

• CLI: Directly interact with the blockchain node's CLI in a terminal

• Directly via Cosmos SDK practices like Keplr signing

• Via our SDK

We recommend generating, signing, and broadcasting your transactions with the BitBadges SDK. The SDK provides easy-to-use TypeScript functions to construct transactions of all types and broadcast them to a blockchain node.

Two Approaches

The SDK offers two approaches for signing transactions:

1. BitBadgesSigningClient (Streamlined)

The BitBadgesSigningClient provides a simple, all-in-one solution that handles everything automatically:

• Account info fetching and caching

• Gas estimation via simulation

• Signing with any wallet (Cosmos or EVM)

• Broadcasting to the network

• Automatic sequence retry on mismatch

import { BitBadgesSigningClient, GenericCosmosAdapter } from 'bitbadgesjs-sdk';

const adapter = await GenericCosmosAdapter.fromKeplr('bitbadges-1');
const client = new BitBadgesSigningClient({ adapter });

const result = await client.signAndBroadcast([msg]);
console.log('TX Hash:', result.txHash);

Best for: Quick integration, simple use cases, when you don't need fine-grained control.

2. Manual Signing (Fine-Grained Control)

For more control over the transaction lifecycle, use the manual signing approach:

• Signing - Cosmos: Sign with Keplr, Leap, Cosmostation, etc.

• Signing - Ethereum: Sign with MetaMask, Privy, etc. via EVM precompiles

This approach gives you full control over:

• Transaction context construction

• Fee and gas configuration

• Simulation and gas estimation

• Signing flow customization

• Broadcasting timing and retry logic

Best for: Custom integrations, complex transaction flows, when you need full control.

Comparison

Feature	BitBadgesSigningClient	Manual Signing
Setup	Minimal	More code required
Control	Abstracted	Full control
Account Info	Auto-fetched & cached	Manual fetch
Gas Estimation	Built-in	Manual simulation
Sequence Retry	Automatic	Manual handling
Custom Flows	Limited	Fully customizable

Wallet Support

Both approaches support:

Wallet Type	Examples
Cosmos	Keplr, Leap, Cosmostation
EVM	MetaMask, Privy, any EIP-1193 provider
Server-side	Mnemonic, Private Key

The SDK automatically handles message conversion to EVM precompile calls when using an EVM wallet.