Joining the Xar Mainnet
Home keyboard_arrow_right Joining the Xar Mainnet
July 24, 2020 - 7:50 AM

1. Installing build tools

To install XAR you will need golang version 13 or higher and make.

Update your environment.

sudo apt-get update
sudo apt-get -y upgrade

Install build-essential to install make

apt-get -y build-essential

Install golang

wget https://dl.google.com/go/go1.13.3.linux-amd64.tar.gz
sudo tar -xvf go1.13.3.linux-amd64.tar.gz
sudo mv go /usr/local

Setup golang environment variables

export GOROOT=/usr/local/go
export GOPATH=$HOME/go
export PATH=$GOPATH/bin:$GOROOT/bin:$PATH

2. Installing Xar

mkdir -p $HOME/go/src/github.com/xar-network
cd $HOME/go/src/github.com/xar-network/
git clone https://github.com/xar-network/xar-network.git
cd xar-network/
make install

Confirm your xard version

xard version --long
 name: xar
 server_name: xar
 client_name: xarcli
 version: 2.0.7-48-g46a704d
 commit: 46a704d317584a38ed0d307e55030f050605389e
 build_tags: netgo,ledger
 go: go version go1.13.3 linux/amd64

Confirm your xarcli version

xarcli version --long
 name: xar
 server_name: xar
 client_name: xarcli
 version: 2.0.7-48-g46a704d
 commit: 46a704d317584a38ed0d307e55030f050605389e
 build_tags: netgo,ledger
 go: go version go1.13.3 linux/amd64

3. Joining the mainnet

First initialize en empty chain with your moniker

xard init <moniker>

Copy over the genesis.json so that it matches the mainnet configuration

curl https://raw.githubusercontent.com/xar-network/genesis/master/genesis.json > $HOME/.xard/config/genesis.json

Copy over the config.toml so that it matches the mainnet configuration (or see below to manually edit)

curl https://raw.githubusercontent.com/xar-network/genesis/master/config.toml > $HOME/.xard/config/config.toml

Edit the config.toml to add your moniker

vi $HOME/.xard/config/config.toml# A custom human readable name for this node
moniker = "<moniker-here>"

You can instead simply edit the config.toml, change the following variables

# Time to wait before flushing messages out on the connection
flush_throttle_timeout = "25ms"timeout_propose = "2s"
timeout_propose_delta = "500ms"
timeout_prevote = "1s"
timeout_prevote_delta = "500ms"
timeout_precommit = "1s"
timeout_precommit_delta = "500ms"
timeout_commit = "1s"# Reactor sleep duration parameters
peer_gossip_sleep_duration = "25ms"

Lastly, add the seed nodes;

# Comma separated list of seed nodes to connect to
seeds = "1e0553f274dfc0a804dfa519eaace49dbff51ac1@34.250.125.195:26656,535c42c3f80f1e73b6d25f731caa57f0ca9f55dd@34.255.175.156:26656,06d418e3c110884f85a9f67e1d16aeb523b8195c@63.33.124.239:26656,84d764244913bddbf0067df16289aece2b17b5cc@34.245.237.110:26656,29ef8ef118c74a8bf71150ded103cb5f386e1e49@52.51.127.79:26656"

Start the node and let it sync

xard start

4. Transferring tokens from ERC20 or BEP2 to mainnet

First you need a xar wallet, you can create one via the cli tool

xarcli keys add <key-name>Enter keyring passphrase:
Re-enter keyring passphrase:- name: key-name
  type: local
  address: xar1zppm70tq2xx9xz95tdn9umqcvl7dta6x4nvjs2
  pubkey: 
  mnemonic: ""
  threshold: 0
  pubkeys: []**Important** write this mnemonic phrase in a safe place.
It is the only way to recover your account if you ever forget your password.

Next go to the bridge https://bnbridge.exchenage

Choose your incoming transaction (ERC20 if you are transferring from Ethereum to native FTM, or BEP2 if you are transferring from Binance to native FTM)

ERC20 to FTM selected

Select FTM as the token and specify your xar receive address, created above with the xarcli tool. Select Next

Transfer your FTM on Ethereum and select Next, your Xar account will be credited with your native uFTM. 1 FTM = 1,000,000 uFTM.

5. Issuing a CSDT and minting ucsdt

Now that you have an account with FTM, you can deposit the FTM as collateral (maximum 150%, recommended 300%) and mint ucsdt. We can do this via the xarcli tool

xarcli tx csdt modifycsdt <key-name> uftm 10000000000000 0 --chain-id=xar-chain-dora

If you are running the cli API you can confirm the deposited amount via the REST call.

xarcli rest-server --trust-nodehttp://localhost:1317/csdts?collateralDenom=uftm&owner=xar1zppm70tq2xx9xz95tdn9umqcvl7dta6x4nvjs2&underCollateralizedAt=0

Which will give you the following output based on the above command

{"height":"0","result":[
  {
    "owner": "xar1zppm70tq2xx9xz95tdn9umqcvl7dta6x4nvjs2",
    "collateral_denom": "uftm",
    "collateral_amount": "10000000000000",
    "debt": "0"
  }
]}

You can confirm the current prices for uftm <> ucsdt from the price oracle

http://localhost:1317/oracle/currentprice/uftm

With output

{"height":"0","result":{
  "asset_code": "uftm",
  "price": "0.011592000000000000",
  "expiry": "20000"
}}

So with 10,000,000 FTM (10,000,000,000,000 uFTM) and 300% collateralization we can mint up to 38,640,000,000 ucsdt. So let’s mint 30,000,000,000 ucsdt (30,000 CSDT)

xarcli tx csdt modifycsdt <key-name> uftm 0 30000000000 --chain-id=xar-chain-dora

After this we can confirm our balance has increased by 30,000,000,000 ucsdt

http://localhost:1317/auth/accounts/xar1zppm70tq2xx9xz95tdn9umqcvl7dta6x4nvjs2{"height":"2844","result":{"type":"cosmos-sdk/Account","value":{"address":"xar1zppm70tq2xx9xz95tdn9umqcvl7dta6x4nvjs2","coins":[{"denom":"ucsdt","amount":"30000000000"}],"public_key":"","account_number":14,"sequence":2}}}

6. Creating a validator

First we need to get our validator ID

xard tendermint show-validator

Next we can issue our create-validator command using ucsdt as collateral

xarcli tx staking create-validator --amount=30000000000ucsdt --pubkey=<key from xard tendermint show-validator> --moniker=<moniker> --chain-id=xar-chain-dora --commission-rate="0.10" --commission-max-rate="0.20" --commission-max-change-rate="0.01" --min-self-delegation="1" --gas="auto" --from=<key-name>

You can view if your validator was added via the validators list

http://localhost:1317/staking/validators


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