A Golang implementation of Paloma Chain, a decentralized, automation network for smart contracts deployed in the Cosmos, EVM, Solana, and Polkadot networks.

Paloma is the fastest, secure crosschain communications blockchain. For Crosschain Software engineers who want simultaneous control of multiple, cross-chain-deployed, smart contracts, Paloma is decentralized and consensus-driven message delivery. Paloma is fast state awareness, low cost state computation, and a powerful attestation system. Polama blockchain enables scalable, crosschain, smart contract execution with any data source.

Table of Contents

• Talk To Us
• International Community
• Releases
• Active Networks
• Join a network
• Contributing

Talk to us

We have active, helpful communities on Twitter and Telegram.

• Twitter
• Telegram
• Discord
• Forum

International Community

• Bengali README
• Chinese README
• Indonesian README
• Japanese README
• Persian README
• Polish README
• Portuguese README
• Romanian README
• Russian README
• Spanish README
• Thai README
• Turkish README
• Ukrainian README
• Vietnamese README

Releases

See Release procedure for more information about the release model.

Active Networks

• Testnet paloma-testnet-15 (January 20, 2023)
• Mainnet tumbler (April 22, 2024)

Join an active Network

Note:

Some have seen errors with GLIBC version differences with the downloaded binaries. This is caused by a difference in the libraries of the host that built the binary and the host running the binary.

If you experience these errors, please pull down the code and build it, rather than downloading the prebuilt binary

Install the correct version of libwasm

The current required version of libwasm is 1.5.2. If you're upgrading from a prior version it is recommended to remove the cache to avoid errors. If you're already have palomad running, you will need to stop it before doing these steps.

wget https://github.com/CosmWasm/wasmvm/releases/download/v1.5.2/libwasmvm.x86_64.so
sudo mv libwasmvm.x86_64.so /usr/lib/

rm -r ~/.paloma/data/wasm/cache

To get the latest prebuilt palomad binary:

wget -O - https://github.com/palomachain/paloma/releases/download/v1.13.4/paloma_Linux_x86_64.tar.gz  | \
  sudo tar -C /usr/local/bin -xvzf - palomad
sudo chmod +x /usr/local/bin/palomad

To build palomad using latest release

git clone https://github.com/palomachain/paloma.git
cd paloma
git checkout v1.13.4
make build
sudo mv ./build/palomad /usr/local/bin/palomad

If you're upgrading to the most recent version, you will need to stop palomad before copying the new binary into place.

Connecting to an existing network.

Download and install the latest release of palomad.

Initialize our configuration. This will populate a ~/.paloma/ directory.

MONIKER="$(hostname)"
palomad init "$MONIKER"

#for testnet
CHAIN_ID="paloma-testnet-15" 
#for mainnet
CHAIN_ID="tumbler" 

Copy the configs of the network we wish to connect to

Testnet:

wget -O ~/.paloma/config/genesis.json https://raw.githubusercontent.com/palomachain/testnet/master/paloma-testnet-15/genesis.json
wget -O ~/.paloma/config/addrbook.json https://raw.githubusercontent.com/palomachain/testnet/master/paloma-testnet-15/addrbook.json

Mainnet:

wget -O ~/.paloma/config/genesis.json https://raw.githubusercontent.com/palomachain/mainnet/master/tumbler/genesis.json
wget -O ~/.paloma/config/addrbook.json https://raw.githubusercontent.com/palomachain/mainnet/master/tumbler/addrbook.json

Next you can generate a new set of keys to the new machine, or reuse an existing key.

VALIDATOR=<choose a name>
palomad keys add "$VALIDATOR"

# Or if you have a mnemonic already, we can recover the keys with:
palomad keys add "$VALIDATOR" --recover

Head over to https://faucet.palomaswap.com/ and get some funds!

We can verify the new funds have been deposited.

palomad query bank balances --node tcp://testnet.palomaswap.com:26656 "$ADDRESS"

And start the node!

palomad start

If desired we can stake our funds and create a validator.

MONIKER="$(hostname)"
VALIDATOR="$(palomad keys list --list-names | head -n1)"
STAKE_AMOUNT=1000000ugrain
PUBKEY="$(palomad tendermint show-validator)"
palomad tx staking create-validator \
      --fees=1000000ugrain \
      --from="$VALIDATOR" \
      --amount="$STAKE_AMOUNT" \
      --pubkey="$PUBKEY" \
      --moniker="$MONIKER" \
      --website="https://www.example.com" \
      --details="<enter a description>" \
      --chain-id=$CHAIN_ID \
      --commission-rate="0.1" \
      --commission-max-rate="0.2" \
      --commission-max-change-rate="0.05" \
      --min-self-delegation="100" \
      --yes \
      --broadcast-mode=block

You may receive an error account sequence mismatch, you will need to wait until your local paloma catches up with the rest of the chain.

Running with systemd

First configure the service:

cat << EOT > /etc/systemd/system/palomad.service
[Unit]
Description=Paloma Blockchain
After=network.target
ConditionPathExists=/usr/local/bin/palomad

[Service]
Type=simple
LimitNOFILE=65535
Restart=always
RestartSec=5
WorkingDirectory=~
ExecStartPre=
ExecStart=/usr/local/bin/palomad start
Environment=PIGEON_HEALTHCHECK_PORT=5757
ExecReload=

[Install]
WantedBy=multi-user.target
EOT

Then reload systemd configurations and start the service!

service palomad start

# Check that it's running successfully:
service palomad status
# Or watch the logs:
journalctl -u palomad.service -f

Uploading a local contract

CONTRACT=<contract.wasm>
VALIDATOR="$(palomad keys list --list-names | head -n1)"
palomad tx wasm store "$CONTRACT" --from "$VALIDATOR" --broadcast-mode block -y --gas auto --fees 3000000000ugrain