SEDA Chain

SEDA is an open-source data transmission and computation network that enables a permissionless environment for developers to deploy data feeds. It is built on top of Cosmos SDK and CosmWasm.

To learn about SEDA protocol, please visit docs.seda.xyz.
To learn how to build a local version, please read developing.
To learn how to contribute, please read contributing.

Installation

System Requirements

The current minimal system requirements are as follows and may be subject to change based on future improvements:

• Quad Core or larger AMD or Intel (amd64) CPU
  • ARM CPUs (e.g., Apple M1) are discouraged at this time
• 32GB RAM (with ample swap space)
• 1TB SSD Storage
• 100MBPS bidirectional internet connection

Running SEDA on lower-spec hardware is feasible, but you may encounter potential performance issues or an increased risk of crashes.

Download From Releases

Download from our Github releases page.

Build From Source

Please check out developing.

Running the Node

This is a guide for operating and running the node.

• Individuals aiming to connect to an external node with SEDA.
• Those who wish to establish their own node and/or set up the node as a validator.

seda-chaind is the command-line tool for interfacing, or CLI for short, with the SEDA blockchain. You can check out the installation instructions here.

Now, you're all set to engage with the SEDA blockchain via an external node. For a rundown of commands, type seda-chaind --help. For in-depth info on a particular command, add the --help flag, for example:

seda-chaind --help 
seda-chaind query --help 
seda-chaind query bank --help 

Linking to An External Node

This section is for those linking to an external node, so if you want to run commands from your local machine, or don't feel like running a node yourself you can use the seda-chaind binary to connect to an external node. This can be done two ways:

1. Add the --node flag to your CLI commands, followed by the RPC endpoint in the https://<hostname>:<port> format.
2. Alternatively, set a default node: seda-chaind config set client node https://[hostname]:[port]

When connecting externally, choose a trustworthy node operator. Unscrupulous operators might tamper with query outcomes or block transactions. The SEDA team currently supports these RPC endpoints:

• Testnet-seda-node-1: http://18.171.36.35:26657
• Testnet-seda-node-2: http://13.41.125.154:26657

Running the Node Yourself

<!-- make the downloaded binary executable -->
chmod +x seda-chaind-${ARCH}
<!-- chmod +x seda-chaind-amd64 -->
<!-- chmod +x seda-chaind-arm64 -->

<!-- reset the chain -->
./seda-chaind-${ARCH} tendermint unsafe-reset-all
rm -rf ~/.seda-chain || true

<!-- create your operator key -->
./seda-chaind-${ARCH} keys add <key-name>

<!-- initialize your node and join the network (optionally with an existing key using the recover flag) -->
./seda-chaind-${ARCH} join <moniker> --network <devnet|testnet> [--recover]

<!-- start your node -->
./seda-chaind-${ARCH} start

Creating a validator

In order to create your validator, make sure you are fully synced to the latest block height of the network.

You can check by using the following command:

curl -s localhost:26657/status | jq .result | jq .sync_info

In the output of the above command make sure catching_up is false

“catching_up”: false

Create a validator.json file and fill in the create-validator tx parameters:

{
 "pubkey": {"@type":"/cosmos.crypto.ed25519.PubKey","key":"$(./seda-chaind-${ARCH} tendermint show-validator)"},
 "amount": "1000000000000000000000000000000000aseda", 
 "moniker": "the moniker for your validator",
 "identity": "optional identity signature (ex. UPort or Keybase) This key will be used by block explorers to identify the validator.",
 "website": "validator's (optional) website",
 "security": "validator's (optional) security contact email",
 "details": "validator's (optional) details",
 "commission-rate": "0.1",
 "commission-max-rate": "0.2",
 "commission-max-change-rate": "0.01",
 "min-self-delegation": "1" 
}

Use the following command to create a validator:

./seda-chaind-${ARCH} tx staking create-validator validator.json --from <wallet-name> --chain-id <target-chain> --node <node-url>

That’s it now you can find your validator operator address using the following command, which you can advertise to receive delegations:

./seda-chaind-${ARCH} keys show <wallet-name> --bech val -a

Running the Node with Cosmovisor

Run the node as a subprocess of Cosmovisor if you want automatic upgrading, which only requires you to place a new binary in the right location before an upgrade height.

Install Cosmovisor.

go install cosmossdk.io/tools/cosmovisor/cmd/cosmovisor@latest

Then, add these lines to your profile (maybe .profile, .zprofile, or something else) to set up environment variables:

echo "# Cosmovisor Setup" >> ~/.profile
echo "export DAEMON_NAME=seda-chaind" >> ~/.profile
echo "export DAEMON_HOME=$HOME/.seda-chain" >> ~/.profile
echo "export DAEMON_ALLOW_DOWNLOAD_BINARIES=false" >> ~/.profile
echo "export DAEMON_LOG_BUFFER_SIZE=512" >> ~/.profile
echo "export DAEMON_RESTART_AFTER_UPGRADE=true" >> ~/.profile
echo "export UNSAFE_SKIP_BACKUP=true" >> ~/.profile
source ~/.profile

Initialize Cosmovisor with the chain binary and start the node.

cosmovisor init seda-chaind-${ARCH}
cosmovisor run start

Note that for an upgrade, simply run the following command to prepare Cosmovisor with the upgrade binary before the chain reaches the upgrade height.

cosmovisor add-upgrade <upgrade-name> <upgrade-binary-file>

License

Contents of this repository are open source under GNU General Public License v3.0.