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Setting up Environment
You need an environment to run contracts. You can either run your node locally or connect to an existing network.
For easy testing, the MANTRA Chain TESTNET is live. You can use the TESTNET to deploy and run your contracts.
To verify that the testnet is currently active, make sure the following URLs are working for you:
The testnet has one native tokens set up -
AUM (uaum) for becoming a validator and for paying fees.The official MANTRA Chain TESTNET Block Explorer is at:
You can use the block explorer to explore transactions, addresses, validators and contracts.
When interacting with the testnet, you can either use
wasmd which is a Go client, or the Node REPL. The Node REPL is recommended for contract operations, since JSON manipulation is not intuitive with the Shell/Go client.Let's configure the
mantrachaind executable, point it to the testnet, create a wallet and ask for tokens from faucet:First, create a file called
mantrachaind-cli.env :export CHAIN_ID="mantrachain-testnet-1"
export TESTNET_NAME="mantrachain-testnet"
export FEE_DENOM="uaum"
export STAKE_DENOM="uaum"
export BECH32_HRP="wasm"
export WASMD_VERSION="v0.27.0"
export CONFIG_DIR=".mantrachaind"
export BINARY="mantrachaind"
export COSMJS_VERSION="v0.28.1"
export GENESIS_URL="https://<location-to-be-provided>/config/genesis.json"
export RPC="https://rpc.testnet.mantrachain.io:443"
export FAUCET="https://faucet.testnet.mantrachain.io"
export NODE=(--node $RPC)
export TXFLAG=($NODE --chain-id $CHAIN_ID --gas-prices 0.25uaum --gas auto --gas-adjustment 1.3)
Save the above and then
source the above to set the environment variables.source mantrachaind-cli.env
We'll use these environment variables later.
Set up wallets with addresses for storing tokens.
# add wallets for testing
mantrachaind keys add wallet
mantrachaind keys add wallet2
Running the command above will add two encrypted private keys to the mantrachaind keyring and display their attributes as follows:
- address: mantra188xl62zf0hdscf47zyf6ajz9x4ym0v90h9whrx
name: wallet
pubkey: '{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"AiFGNfxnlXj0Uos/3G918Pdzsq4CBg1c0RXrxRh8lCyM"}'
type: local
**Important** write this mnemonic phrase in a safe place.
It is the only way to recover your account if you ever forget your password.
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You will need some amount of tokens stored in your wallet address in order to interact with the network.
To obtain tokens, visit https://faucet.testnet.mantrachain.io and input the relevant wallet addresses.
The faucet will issue tokens to one wallet address only once within a single 24 hour period, and only once for any wallet address from the one IP address within a single 24 hour period.
This is to limit the faucet from being drained of tokens and to maintain the integrity of the TESTNET.
MANTRA Chain Faucet
Last modified 27d ago