Jay | Install

System Specs

Hardware	Requirement
CPU	4 Cores
RAM	8 GB
Disk	200 GB

Install Jay Mainnet Validator

1. System Preparation

sudo apt update && apt upgrade -y
sudo apt install curl iptables build-essential git wget jq make gcc nano tmux htop nvme-cli pkg-config libssl-dev libleveldb-dev tar clang bsdmainutils ncdu unzip -y

2. Install Go V1.24.13

cd $HOME
VER="1.24.13"
wget "https://golang.org/dl/go$VER.linux-amd64.tar.gz"
sudo rm -rf /usr/local/go
sudo tar -C /usr/local -xzf "go$VER.linux-amd64.tar.gz"
rm "go$VER.linux-amd64.tar.gz"

[ ! -f $HOME/.bash_profile ] && touch $HOME/.bash_profile
echo "export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin" >> $HOME/.bash_profile
echo "export GOROOT=$(go1.25.3 env GOROOT) PATH=$GOROOT/bin:$PATH" >> $HOME/.bash_profile
source $HOME/.bash_profile
[ ! -d $HOME/go/bin ] && mkdir -p $HOME/go/bin

3. Install jay Binary and init node

git clone https://github.com/bbtccore/thejaynetwork.git
cd thejaynetwork
make build

#move binary
cp build/jaynd /usr/local/bin/

#init node
jaynd init test-jay --chain-id thejaynetwork

#install wasm
cd $HOME/.jayn
wget https://hub.maouam.xyz/hub/mainnet/jay/wasm.zip
unzip wasm.zip

4. Configure Peers

PEERS="9951f5546f067ed877dc425fadc98e234e0480c1@152.53.195.74:26656,c06244aa1a3f76707d4330e05df510010faff26c@89.58.25.104:26656"
sed -i -e "s/^persistent_peers *=.*/persistent_peers = \"$PEERS\"/" $HOME/.jayn/config/config.toml

5. Configure Pruning

pruning="custom"
pruning_keep_recent="100"
pruning_keep_every="0"
pruning_interval="10"

sed -i -e "s/^pruning *=.*/pruning = \"$pruning\"/" $HOME/.jayn/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/" $HOME/.jayn/config/app.toml
sed -i -e "s/^pruning-keep-every *=.*/pruning-keep-every = \"$pruning_keep_every\"/" $HOME/.jayn/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.jayn/config/app.toml

6. Set Custom Port (optional)

PORT=346
sed -i -e "s%:26657%:${PORT}57%" $HOME/.jayn/config/client.toml
sed -i -e "s%:26658%:${PORT}58%; s%:26657%:${PORT}57%; s%:6060%:${PORT}60%; s%:26656%:${PORT}56%; s%:26660%:${PORT}61%" $HOME/.jayn/config/config.toml
sed -i -e "s%:1317%:${PORT}17%; s%:9090%:${PORT}90%" $HOME/.jayn/config/app.toml

sed -i \
-e 's|^pruning *=.*|pruning = "custom"|' \
-e 's|^pruning-keep-recent *=.*|pruning-keep-recent = "100"|' \
-e 's|^pruning-keep-every *=.*|pruning-keep-every = "0"|' \
-e 's|^pruning-interval *=.*|pruning-interval = "10"|' \
$HOME/.jayn/config/app.toml

sed -i 's|^indexer *=.*|indexer = "null"|' $HOME/.jayn/config/config.toml

7. Set state sync

SNAP_RPC="http://89.58.25.104:26657"
LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height); \
BLOCK_HEIGHT=$((LATEST_HEIGHT - 1000)); \
TRUST_HASH=$(curl -s "$SNAP_RPC/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)
echo $LATEST_HEIGHT $BLOCK_HEIGHT $TRUST_HASH

sed -i.bak -E "s|^(enable[[:space:]]+=[[:space:]]+).*$|\1true| ; \
s|^(rpc_servers[[:space:]]+=[[:space:]]+).*$|\1\"$SNAP_RPC,$SNAP_RPC\"| ; \
s|^(trust_height[[:space:]]+=[[:space:]]+).*$|\1$BLOCK_HEIGHT| ; \
s|^(trust_hash[[:space:]]+=[[:space:]]+).*$|\1\"$TRUST_HASH\"| ; \
s|^(seeds[[:space:]]+=[[:space:]]+).*$|\1\"\"|" $HOME/.jayn/config/config.toml

more $HOME/.jayn/config/config.toml | grep 'rpc_servers'
more $HOME/.jayn/config/config.toml | grep 'trust_height'
more $HOME/.jayn/config/config.toml | grep 'trust_hash'

8. Create Systemd Service

sudo tee /etc/systemd/system/jaynd.service > /dev/null <<EOF
[Unit]
Description=jaynd
After=network-online.target

[Service]
User=root
ExecStart=/usr/local/bin/jaynd start --home $HOME/.jayn
Restart=on-failure
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

9. Start & Check logs

sudo systemctl enable jaynd
sudo systemctl start jaynd

journalctl -u jaynd -f

10. Create Validator JSON

cat <<EOF > $HOME/.jayn/validator.json
{
  "pubkey": $(jaynd comet show-validator),
  "amount": "1000000ujay",
  "moniker": "<YOUR_VALIDATOR_NAME>",
  "identity": "<YOUR_KEYBASE_ID>",
  "website": "<YOUR_WEBSITE>",
  "security": "<YOUR_EMAIL>",
  "details": "<YOUR_DETAILS>",
  "commission-rate": "0.05",
  "commission-max-rate": "0.20",
  "commission-max-change-rate": "0.01",
  "min-self-delegation": "1"
}
EOF

11. Create Validator

jaynd tx staking create-validator $HOME/.jayn/validator.json --from wallet --chain-id thejaynetwork --fees 2000ujay

lastUpdated: 2026-05-25