First Transaction on Libra Blockchain

Overview

Imagine that one of your friends lives across the sea & he/she requires some Libra coin, which you have in abundance. How cool it would be if you were able to send the coins via Facebook or WhatsApp.

Sounds really surprising, right? Just read through the entire blog and you’ll know how.

Recently, Facebook launched the testnet of the Libra Blockchain. Today, we are going to perform our 1st transaction on the testnet.

If you aren’t familiar with the concept, go through our previous blog – Introduction of Libra and you’ll get familiarized. Check out from here.

Lets begin with the steps of executing your first transaction.

Topics

Step:1 Clone the Libra Core Repository

Git clone: https://github.com/libra/libra.git

Step:2 Setup Libra Core

cd libra
./scripts/dev_setup.sh

To setup Libra Core, run the setup script to install the dependencies.

The setup script performs these actions:

Installs rustup
Installs rust-toolchain
Installs CMake
Installs protoc
Installs Go

Step:3 Build Libra CLI Client and Connect to the Testnet

./scripts/cli/start_cli_testnet.sh

To connect to a validator node running on the Libra testnet.

Step:4 Check If the CLI Client Is Running on Your System

libra% account

Step:5 Create My Account

libra% account create

#0 is the index of My account.

Step:6 Create My’s Account

libra% account create

#1 is the index for My Friend’s account.

Step:7 (optional) List Accounts

libra% account list

Add Libra Coins to My and My Friend’s Accounts

Step:8 Add Libra to My Account

libra% account mint 0 100

0 is the index of My account.
100 is the amount of Libra to be added to My account.

Step: 9 Add Libra to My Friend’s Account

libra% account mint 1 200

1 is the index of My Friend’s account.
200 is the amount of Libra to be added to My Friend’s account.

Step: 10 Check the Balance

libra% query balance 0

libra% query balance 1

Step: 11 Query the Accounts’ Sequence Numbers

libra% query sequence 0

libra% query sequence 1

A sequence number of 0 for both My and My Friend’s accounts indicates that no transactions from either My or My Friend’s account has been executed so far.

Step: 12 Transfer Money

libra% transfer 0 1 10

0 is the index of My account.
1 is the index of My Friend’s account.
10 is the number of Libra to transfer.

Step: 13 Retrieve the information about the transaction

libra% query txn_acc_seq 0 0 true

Step: 14 Query Sequence Number After Transfer