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# Deploy a Testnet
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## Install Cosmos-SDK on a Digital Ocean Droplet \(Recommended\)
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```
export PATH=$PATH:/usr/lib/go-1.10/bin
export PATH=$PATH:/root/go/bin
bash < (curl -s https://gist.github.com/melekes/1bd57c73646de97c8f6cbe1b780eb822/raw/2447b0fbf95775852c93a91ed3e12631c7ceb648/install.sh)
nohup ./build/gaiad start &
```
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## Software Setup \(Manual Installation\)
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- Install [GNU Wget ](https://www.gnu.org/software/wget/ ):
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**MacOS**
```
brew install wget
```
**Linux**
```
sudo apt-get install wget
```
Note: You can check other available options for downloading `wget` [here ](https://www.gnu.org/software/wget/faq.html#download ).
**Get Source Code**
```
go get github.com/cosmos/cosmos-sdk
```
Now we can fetch the correct versions of each dependency by running:
```
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git fetch --all
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git checkout develop
make get_tools // run $ make update_tools if already installed
make get_vendor_deps
make install
make install_examples
```
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The latest binaries should now be installed. Verify that everything is OK by running:
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```
gaiad version
```
You should see:
```
0.15.0-rc0-0f2aa6b
```
And also:
```
gaiacli version
```
You should see:
```
0.15.0-rc0-0f2aa6b
```
## Genesis Setup
Initiliaze `gaiad` :
```
gaiad init
```
You can find the corresponding genesis files [here ](https://github.com/tendermint/testnets ). Then replace the `genesis.json` and `config.toml` files:
```
rm $HOME/.gaiad/config/genesis.json $HOME/.gaiad/config/config.toml $HOME/.gaiad/config/addrbook.json
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wget -O $HOME/.gaiad/config/genesis.json https://raw.githubusercontent.com/cosmos/testnet/master/gaia-4000/genesis.json
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wget -O $HOME/.gaiad/config/config.toml https://raw.githubusercontent.com/cosmos/testnet/master/gaia-4000/config.toml
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```
Lastly change the `moniker` string in the`config.toml`to identify your node.
```
# A custom human readable name for this node
moniker = "< your_custom_name > "
```
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## Starting Gaiad
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Start the full node:
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```
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gaiad start
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```
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Check the everything is running smoothly:
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```
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gaiacli status
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```
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## Generate keys
You'll need a private and public key pair \(a.k.a. `sk, pk` respectively\) to be able to receive funds, send txs, bond tx, etc.
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To generate your a new key \(default _ed25519_ elliptic curve\):
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```
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KEYNAME=< set_a_name_for_your_new_key >
gaiacli keys add $KEYNAME
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```
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Next, you will have to enter a passphrase for your`$KEYNAME`key twice. Save the _seed phrase_ in a safe place in case you forget the password.
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Now if you check your private keys you will see the `$KEYNAME ` key among them:
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```
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gaiacli keys show $KEYNAME
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```
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You can see your other available keys by typing:
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```
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gaiacli keys list
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```
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Save your address and pubkey into a variable
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```
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MYADDR=< your_newly_generated_address >
MYPUBKEY=< your_newly_generated_public_key >
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```
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**IMPORTANT:** We strongly recommend to **NOT** use the same passphrase for your different keys. The Tendermint team and the Interchain Foundation will not be responsible for the lost of funds.
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## Getting Coins
Go to the faucet in [http://atomexplorer.com/ ](http://atomexplorer.com/ ) and claim some coins for your testnet by typing the address of your key, as printed out above.
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## Send tokens
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```
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gaiacli send --from=$MYADDR --amount=1000fermion --chain-id=< name_of_testnet_chain > --sequence=1 --name=$KEYNAME --to=< destination_address >
```
The `--amount` flag defines the corresponding amount of the coin in the format `--amount=<value|coin_name>`
The `--sequence` flag corresponds to the sequence number to sign the tx.
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Now check the destination account and your own account to check the updated balances \(by default the latest block\):
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```
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gaiacli account < destination_address >
gaiacli account $MYADDR
```
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You can also check your balance at a given block by using the `--block` flag:
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```
gaiacli account $MYADDR --block=< block_height >
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```
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##### Custom fee \(coming soon\)
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You can also define a custom fee on the transaction by adding the `--fee` flag using the same format:
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```
gaiacli send --from=$MYADDR --amount=1000fermion --fee=1fermion --chain-id=< name_of_testnet_chain > --sequence=1 --name=$KEYNAME --to=< destination_address >
```
### Transfer tokens to other chain
The command to`transfer`tokens to other chain is the same as`send`, we just need to add the`--chain`flag:
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```
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gaiacli transfer --from=$MYADDR --amount=20fermion --chain-id=< name_of_testnet_chain > --chain=< destination_chain > --sequence=1 --name=$KEYNAME --to=< sidechain_destination_address >
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```
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## Staking: Add a Validator
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Get your public key by typing:
```
gaiad show_validator
```
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The returned value is your validator address in hex. This can be used to create a new validator candidate by staking some tokens:
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```
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gaiacli declare-candidacy --amount=500fermions --pubkey=$PUBKEY --address-candidate=$MYADDR --moniker=satoshi --chain-id=< name_of_the_testnet_chain > --sequence=1 --name=$KEYNAME
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```
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You can add more information of the validator candidate such as`--website`, `--keybase-sig ` or additional`--details`. If you want to edit the candidate info:
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```
gaiacli edit-candidacy --details="To the cosmos !" --website="https://cosmos.network"
```
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Finally, you can check all the candidate information by typing:
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```
gaiacli candidate --address-candidate=$MYADDR --chain-id=< name_of_the_testnet_chain >
```
To check that the validator is active you can find it on the validator set list:
```
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gaiacli validatorset
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```
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**Note:** Remember that to be in the validator set you need to have more total power than the Xnd validator, where X is the assigned size for the validator set \(by default _`X = 100`_ \).
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#### Delegating: Bonding and unbonding to a validator
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You can delegate \(i.e. bind\) **Atoms** to a validator to obtain a part of its fee revenue in exchange \(the fee token in the Cosmos Hub are **Photons** \).
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```
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gaiacli delegate --amount=10fermion --address-delegator=$MYADDR --address-candidate=< bonded_validator_address > --shares=MAX --name=$KEYNAME --chain-id=< name_of_testnet_chain > --sequence=1
```
If for any reason the validator misbehaves or you just want to unbond a certain amount of the bonded tokens:
```
gaiacli unbond --address-delegator=$MYADDR --address-candidate=< bonded_validator_address > --shares=MAX --name=$KEYNAME --chain-id=< name_of_testnet_chain > --sequence=1
```
You can unbond a specific amount of`shares`\(eg:`12.1`\) or all of them \(`MAX` \).
You should now see the unbonded tokens reflected in your balance and in your delegator bond :
```
gaiacli account $MYADDR
gaiacli delegator-bond --address-delegator=$MYADDR --address-candidate=< bonded_validator_address > --chain-id=< name_of_testnet_chain >
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```
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#### Relaying
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Relaying is key to enable interoperability in the Cosmos Ecosystem. It allows IBC packets of data to be sent from one chain to another.
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The command to relay packets is the following:
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```
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gaiacli relay --from-chain-id=< name_of_testnet_chain > --to-chain-id=< destination_chain_name > --from-chain-node=< host > :< port > --to-chain-node=< host > :< port > --name=$KEYNAME --sequence=1
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```