DaoDst BlockChain

Golang execution layer implementation of the NXNOS protocol.

Automated builds are available for stable releases and the unstable master branch. Binary archives are published at https://www.daodst.com/#/download.

Building the source

For prerequisites and detailed build instructions please read the Installation Instructions.

Building stcd requires both a Go (version 1.20 or later) and a C compiler. You can install them using your favourite package manager. Once the dependencies are installed, run

make stcd --version

or, to build the full suite of utilities:

make all

Executables

The daodst project comes with several wrappers/executables found in the cmd directory.

Command	Description
stcd	Blockchain node program, completes blockchain synchronization processing, and all related functions
chat	Provide communication layer processing projects
gateway	The mobile application connects to the gateway endpoint, provides block query services, and connects to the communication relay
dvm	DVM (DST VM) is a dedicated module used to run smart contracts, supports virtual machines running on the EVM platform, and adds support for high-level languages.
NXNOS	Device Interconnect Protocol Operating System.

Running stcd

Going through all the possible command line flags is out of scope here (please consult our CLI Wiki page), but we've enumerated a few common parameter combos to get you up to speed quickly on how you can run your own stcd instance.

Hardware Requirements

Minimum:

• CPU with 8+ cores
• 64GB RAM
• 1TB free storage space to sync the Mainnet
• 8 MBit/sec download Internet service
• Port Open 8545 8546

Full node on the main DaoDst network

By far the most common scenario is people wanting to simply interact with the DaoDst network: create accounts; transfer funds; deploy and interact with contracts. For this particular use case, the user doesn't care about years-old historical data, so we can sync quickly to the current state of the network. To do so:

$ stcd console

This command will:

• Start stcd in snap sync mode (default, can be changed with the --trust-node flag), causing it to download more data in exchange for avoiding processing the entire history of the DaoDst network, which is very CPU intensive.

A Full node on the test network

Transitioning towards developers, if you'd like to play around with creating DaoDst contracts, you almost certainly would like to do that without any real money involved until you get the hang of the entire system. In other words, instead of attaching to the main network, you want to join the test network with your node, which is fully equivalent to the main network, but with play-DaoDst only.

$ stcd start --chain-id=testnet

The console subcommand has the same meaning as above and is equally useful on the testnet too.

Specifying the --chain-id=testnet flag, however, will reconfigure your stcd instance a bit:

• Instead of connecting to the main DaoDst network, the client will connect to the test network, which uses different P2P bootnodes, different network IDs and genesis states.

Note: Although some internal protective measures prevent transactions from crossing over between the main network and test network, you should always use separate accounts for play and real money. Unless you manually move accounts, stcd will by default correctly separate the two networks and will not make any accounts available between them.

Configuration

As an alternative to passing the numerous flags to the stcd binary, you can also pass a configuration file via:

$ stcd start --home /path/to/your_config

To get an idea of how the file should look like you can use the ll /path/to/your_config/.stcd/config/ subcommand to export your existing configuration files:

Note: This works only with stcd v23.1.3 and above.

Programmatically interfacing stcd nodes

As a developer, sooner rather than later you'll want to start interacting with stcd and the DaoDst network via your own programs and not manually through the console. To aid this, geth has built-in support for a JSON-RPC based APIs (standard APIs. These can be exposed via HTTP, WebSockets and IPC (UNIX sockets on UNIX based platforms, and named pipes on Windows).

The IPC interface is enabled by default and exposes all the APIs supported by stcd, whereas the HTTP and WS interfaces need to manually be enabled and only expose a subset of APIs due to security reasons. These can be turned on/off and configured as you'd expect.

HTTP based JSON-RPC API options:

• --http Enable the HTTP-RPC server
• --http.addr HTTP-RPC server listening interface (default: localhost)
• --http.port HTTP-RPC server listening port (default: 8545)
• --http.api API's offered over the HTTP-RPC interface (default: eth,net,web3)
• --http.corsdomain Comma separated list of domains from which to accept cross origin requests (browser enforced)
• --ws Enable the WS-RPC server
• --ws.addr WS-RPC server listening interface (default: localhost)
• --ws.port WS-RPC server listening port (default: 8546)
• --ws.api API's offered over the WS-RPC interface (default: eth,net,web3)
• --ws.origins Origins from which to accept WebSocket requests
• --ipcdisable Disable the IPC-RPC server
• --ipcapi API's offered over the IPC-RPC interface (default: admin,debug,eth,miner,net,personal,txpool,web3)
• --ipcpath Filename for IPC socket/pipe within the datadir (explicit paths escape it)

You'll need to use your own programming environments' capabilities (libraries, tools, etc) to connect via HTTP, WS or IPC to a stcd node configured with the above flags and you'll need to speak JSON-RPC on all transports. You can reuse the same connection for multiple requests!

Note: Please understand the security implications of opening up an HTTP/WS based transport before doing so! Hackers on the internet are actively trying to subvert DaoDst nodes with exposed APIs! Further, all browser tabs can access locally running web servers, so malicious web pages could try to subvert locally available APIs!

Operating a private network

Maintaining your own private network is more involved as a lot of configurations taken for granted in the official networks need to be manually set up.

Defining the private genesis state

First, you'll need to create the genesis state of your networks, which all nodes need to be aware of and agree upon. This consists of a small JSON file (e.g. call it genesis.json):

{
  "genesis_time": "2024-02-28T01:10:22.3276221Z",
  "chain_id": "daodst_9000-1",
  "initial_height": "1",
  "consensus_params": {
    "block": {
      "max_bytes": "22020096",
      "max_gas": "-1",
      "time_iota_ms": "1000"
    },
    "evidence": {
      "max_age_num_blocks": "100000",
      "max_age_duration": "172800000000000",
      "max_bytes": "1048576"
    },
    "validator": {
      "pub_key_types": [
        "ed25519"
      ]
    },
    "version": {}
  },
  "app_hash": "",
  "app_state": {
    "auth": {
      "params": {
        "max_memo_characters": "256",
        "tx_sig_limit": "7",
        "tx_size_cost_per_byte": "10",
        "sig_verify_cost_ed25519": "590",
        "sig_verify_cost_secp256k1": "1000"
      }
    },
    "authz": {
      "authorization": []
    },
    "bank": {
      "params": {
        "send_enabled": [],
        "default_send_enabled": true
      },
      "denom_metadata": []
    },
    "capability": {
      "index": "1",
      "owners": []
    },
    "chat": {
      "params": {
        "max_phone_number": "10",
        "destroy_phone_number_coin": {
          "denom": "dst",
          "amount": "10000000000000000000"
        },
        "chat_fee": {
          "denom": "dst",
          "amount": "1000000000000000000"
        },
        "min_register_burn_amount": {
          "denom": "dst",
          "amount": "100000000000000000000"
        },
        "min_burn_amount": {
          "denom": "dst",
          "amount": "100000000000000"
        }
      }
    },
    "claims": {
      "params": {
        "enable_claims": true,
        "airdrop_start_time": "0001-01-01T00:00:00Z",
        "duration_until_decay": "2629800s",
        "duration_of_decay": "5259600s",
        "claims_denom": "aevmos",
        "authorized_channels": [
          "channel-0",
          "channel-3"
        ],
        "evm_channels": [
          "channel-2"
        ]
      },
      "claims_records": []
    },
    "contract": {
      "params": {}
    },
    "crisis": {
      "constant_fee": {
        "denom": "nxn",
        "amount": "1000"
      }
    },
    "dao": {
      "params": {
        "rate": "0.100000000000000000",
        "min_salary_reward_ratio": "0.000000000000000000",
        "max_salary_reward_ratio": "0.999000000000000000",
        "burn_get_power_ratio": "100.000000000000000000",
        "max_cluster_members": "666",
        "min_create_cluster_pledge_amount": "5000",
        "dao_reward_percent": "0.100000000000000000",
        "dpos_reward_percent": "0.100000000000000000",
        "burn_current_gate_ratio": "0.057500000000000000",
        "burn_register_gate_ratio": "0.037500000000000000",
        "day_mint_amount": "360000000000000000000000.000000000000000000",
        "power_gas_ratio": "100.000000000000000000",
        "ad_price": "0.050000000000000000",
        "ad_rate": "0.200000000000000000",
        "burn_reward_fee_rate": "0.300000000000000000",
        "receive_dao_ratio": "0.075000000000000000",
        "connectivity_dao_ratio": "0.700000000000000000",
        "burn_dao_pool": "0.100000000000000000",
        "min_dao_reward_ratio": "0.000000000000000000",
        "max_dao_reward_ratio": "0.900000000000000000",
        "max_online_ratio": "0.700000000000000000"
      }
    },
    "distribution": {
      "params": {
        "community_tax": "0.010000000000000000",
        "base_proposer_reward": "0.010000000000000000",
        "bonus_proposer_reward": "0.040000000000000000",
        "withdraw_addr_enabled": true,
        "fee_burn_ratio": "0.500000000000000000"
      },
      "fee_pool": {
        "community_pool": []
      },
      "delegator_withdraw_infos": [],
      "previous_proposer": "",
      "outstanding_rewards": [],
      "validator_accumulated_commissions": [],
      "validator_historical_rewards": [],
      "validator_current_rewards": [],
      "delegator_starting_infos": [],
      "validator_slash_events": []
    },
    "erc20": {
      "params": {
        "enable_erc20": true,
        "enable_evm_hook": true
      },
      "token_pairs": []
    },
    "evidence": {
      "evidence": []
    }
    "feegrant": {
      "allowances": []
    },
    "feemarket": {
      "params": {
        "no_base_fee": false,
        "base_fee_change_denominator": 8,
        "elasticity_multiplier": 2,
        "enable_height": "0",
        "base_fee": "1000000000",
        "min_gas_price": "0.000000000000000000",
        "min_gas_multiplier": "0.500000000000000000"
      },
      "block_gas": "0"
    },
    "gateway": {
      "params": {
        "index_num_height": "100",
        "redeem_fee_height": "432000",
        "redeem_fee": "0.100000000000000000",
        "min_delegate": {
          "denom": "nxn",
          "amount": "10000000000000000000"
        },
        "validity": "5256000"
      }
    },
 
    "gov": {
      "starting_proposal_id": "1",
      "deposits": [],
      "votes": [],
      "proposals": [],
      "deposit_params": {
        "min_deposit": [
          {
            "denom": "nxn",
            "amount": "1000000000000000000"
          }
        ],
        "max_deposit_period": "300s"
      },
      "voting_params": {
        "voting_period": "300s"
      },
      "tally_params": {
        "quorum": "0.334000000000000000",
        "threshold": "0.500000000000000000",
        "veto_threshold": "0.334000000000000000"
      }
    },
    "group": {
      "group_seq": "0",
      "groups": [],
      "group_members": [],
      "group_policy_seq": "0",
      "group_policies": [],
      "proposal_seq": "0",
      "proposals": [],
      "votes": []
    },
    "ibc": {
      "client_genesis": {
        "clients": [],
        "clients_consensus": [],
        "clients_metadata": [],
        "params": {
          "allowed_clients": [
            "06-solomachine",
            "07-tendermint"
          ]
        },
        "create_localhost": false,
        "next_client_sequence": "0"
      },
      "connection_genesis": {
        "connections": [],
        "client_connection_paths": [],
        "next_connection_sequence": "0",
        "params": {
          "max_expected_time_per_block": "30000000000"
        }
      },
      "channel_genesis": {
        "channels": [],
        "acknowledgements": [],
        "commitments": [],
        "receipts": [],
        "send_sequences": [],
        "recv_sequences": [],
        "ack_sequences": [],
        "next_channel_sequence": "0"
      }
    },
    "mint": {
      "minter": {
        "inflation": "0.100000000000000000",
        "annual_provisions": "0.000000000000000000"
      },
      "params": {
        "mint_denom": "nxn",
        "inflation_rate_change": "1.000000000000000000",
        "inflation_max": "0.070000000000000000",
        "inflation_min": "0.030000000000000000",
        "goal_bonded": "0.670000000000000000",
        "blocks_per_year": "5259600"
      }
    },
    "params": null,
    "recovery": {
      "params": {
        "enable_recovery": true,
        "packet_timeout_duration": "14400s"
      }
    },
    "slashing": {
      "params": {
        "signed_blocks_window": "100",
        "min_signed_per_window": "0.500000000000000000",
        "downtime_jail_duration": "600s",
        "slash_fraction_double_sign": "0.050000000000000000",
        "slash_fraction_downtime": "0.010000000000000000"
      },
      "signing_infos": [],
      "missed_blocks": []
    },
    "staking": {
      "params": {
        "unbonding_time": "1814400s",
        "max_validators": 100,
        "max_entries": 7,
        "historical_entries": 10000,
        "bond_denom": "nxn",
        "min_commission_rate": "0.050000000000000000"
      },
      "last_total_power": "0",
      "last_validator_powers": [],
      "validators": [],
      "delegations": [],
      "unbonding_delegations": [],
      "redelegations": [],
      "exported": false
    },
    "transfer": {
      "port_id": "transfer",
      "denom_traces": [],
      "params": {
        "send_enabled": true,
        "receive_enabled": true
      }
    },
    "upgrade": {},
    "vesting": {}
  }
}

The above fields should be fine for most purposes, although we'd recommend changing the nonce to some random value so you prevent unknown remote nodes from being able to connect to you. If you'd like to pre-fund some accounts for easier testing, create the accounts and populate the alloc field with their addresses.

  "bank": {
    "params": {
      "send_enabled": [],
      "default_send_enabled": true
    },
    "balances": [
      {
        "address": "your_dst_address",
        "coins": [
          {
            "denom": "dst",
            "amount": "11111111"
          },
        ]
      }
    ]
  }

With the genesis state defined in the above JSON file, you'll need to initialize every stcd node with it prior to starting it up to ensure all blockchain parameters are correctly set:

$ init.sh

Creating the rendezvous point

With all nodes that you want to run initialized to the desired genesis state, you'll need to start a bootstrap node that others can use to find each other in your network and/or over the internet. The clean way is to configure and run a dedicated bootnode:

$ bootnode --genkey=boot.key
$ bootnode --nodekey=boot.key

With the bootnode online, it will display an that other nodes can use to connect to it and exchange peer information. Make sure to replace the displayed IP address information (most probably [::]) with your externally accessible IP to get the actual enode URL.

Note: You could also use a full-fledged stcd node as a bootnode, but it's the less recommended way.

Starting up your member nodes

With the bootnode operational and externally reachable (you can try telnet <ip> <port> to ensure it's indeed reachable), start every subsequent stcd node pointed to the bootnode for peer discovery via the --p2p.seeds flag. It will probably also be desirable to keep the data directory of your private network separated, so do also specify a custom --home flag.

$ stcd --home=path/to/custom/data/folder --p2p.seeds=<bootnode-enode-url-from-above>

Note: Since your network will be completely cut off from the main and test networks, you'll also need to configure a miner to process transactions and create new blocks for you.

Contribution

Thank you for considering helping out with the source code! We welcome contributions from anyone on the internet, and are grateful for even the smallest of fixes!

If you'd like to contribute to Daodst, please fork, fix, commit and send a pull request for the maintainers to review and merge into the main code base. to ensure those changes are in line with the general philosophy of the project and/or get some early feedback which can make both your efforts much lighter as well as our review and merge procedures quick and simple.

Please make sure your contributions adhere to our coding guidelines:

• Code must adhere to the official Go formatting guidelines (i.e. uses gofmt).
• Code must be documented adhering to the official Go commentary guidelines.
• Pull requests need to be based on and opened against the master branch.
• Commit messages should be prefixed with the package(s) they modify.
• E.g. "daodst, rpc: make trace configs optional"

License

The stcd library (i.e. all code outside of the cmd directory) is licensed under the GNU Lesser General Public License v3.0, also included in our repository in the COPYING.LESSER file.

The go-ethereum binaries (i.e. all code inside of the cmd directory) are licensed under the GNU General Public License v3.0, also included in our repository in the COPYING file.