Dione - decentralized oracle network for cross-chain interoperability
Go to file
ChronosX88 041d6b2d2f
Code cleanup
2021-09-02 20:34:41 +03:00
.github/workflows Add build status badge to README 2021-08-05 23:25:53 +03:00
assets/img readme: added dione operations diagram into README.md 2020-11-27 04:26:23 +03:00
beacon Rename some consensus subsystem components, clean up init code 2021-08-24 22:41:48 +03:00
blockchain Code cleanup 2021-09-02 20:34:41 +03:00
cache Refactor cache subsystem for modularity 2021-08-24 22:36:42 +03:00
cmd/dione Change node initialization process: implement manual dependency injection to prevent NPE issues 2020-11-27 22:47:58 +04:00
config Code cleanup 2021-09-02 20:34:41 +03:00
consensus Code cleanup 2021-09-02 20:34:41 +03:00
contracts Remove callback address/method id from NewOracleRequest event properties 2021-04-27 01:01:04 +03:00
docker Add Dockerfile 2021-08-05 23:12:31 +03:00
docs add: solana rpc, solana program subscription, miner beacon entries usage, fixed DioneStaking smart contract 2020-11-13 17:04:10 +03:00
eth-contracts Add Etherscan plugin for Hardhat 2021-07-28 21:52:10 +03:00
ethclient Make Ethereum client as interface 2021-08-25 22:10:56 +03:00
lib Code cleanup 2021-09-02 20:34:41 +03:00
node Code cleanup 2021-09-02 20:34:41 +03:00
pubsub Rename some consensus subsystem components, clean up init code 2021-08-24 22:41:48 +03:00
rpc Make blockchain finally working! 2021-07-12 02:23:00 +03:00
sigs add: filecoin message validation, secp signature 2020-12-02 17:03:39 +03:00
types Implement consensus state change watching to fix stage race conditions 2021-07-27 02:00:15 +03:00
wallet Implement block and transaction primitives 2021-05-12 22:34:14 +03:00
.gitignore Separate secrets to another file, add some Dione-related tasks to hardhat project 2021-07-28 21:13:30 +03:00
LICENCE.md add: MIT licence 2020-08-03 22:03:34 +02:00
Makefile fix: changed Makefile build execution and Docker container 2020-10-22 00:30:08 +03:00
README.md Add build status badge to README 2021-08-05 23:25:53 +03:00
docker-compose.yml Add Dockerfile 2021-08-05 23:12:31 +03:00
go.mod Integrate Uber's Fx DI framework, refactor node init code massively 2021-07-22 00:56:58 +03:00
go.sum Integrate Uber's Fx DI framework, refactor node init code massively 2021-07-22 00:56:58 +03:00



Secured Finance - A protocol for financial transactions backed by crypto-assets.

badge badge

Table of Contents


Dione oracle network is solving the interoperability problem between multiple blockchain networks. Blockchains themself could be describled as deterministic state machine replicated on full-nodes that retains consensus safety. And having the network that handles state changes validation across multiple protocols is crucial for Secured Finance first-layer transactions execution. Using Dione network Secured Finance could provide completely decentralized service for it's users.

Simple explanation for Dione is a distributed network that tracks the state of another blockchains by computing cross-chain tasks. Dione network itself has fast-finality because of the pBFT (Practical Byzantine Fault Tolerance) consensus and has a role to establish finality for the blockchain it connects (Ethereum, Bitcoin networks has probabilistic-finality).

The networking layer of Dione node is based on libp2p, a flexible cross-platform network framework for peer-to-peer applications. Projects like ETH2 (Ethereum 2.0), Filecoin and Polkadot's Substrate is based on libp2p making it's the standard for future decentralized infrastructures.


State validation

In order to validate the state from another blockchain in the Ethereum smart contract Dione users has to import OracleEmitter.sol in smart contract that has to access external data.


Most of connections established via RPC requestresponse protocol meaning that Dione network has to meet all interface requirements and be customized for the particular chain it's connects to.

External adapters

Most of off-chain data use cases require external adapters and APIs for simple integration of custom data sources. However Dione network aiming to solve cross-chain interoperability external adapters would be implemented in the second phase using REST-based communication.


Dione network uses PBFT a practical Byzantine fault-tolerant consensus protocol invented by Miguel Castro and Barbara Liskov at MIT. At a high level, it operates by running a leader election in every block in which, on expectation, a set number of participants may be eligible to submit a block.

The randomness used in the proofs is generated from DRAND, an unbiasable randomness generator, through a beacon.

In order to identify which block has to be selected between multiple blocks proposed by multiple leaders other network operators has to vote up to 2/3 of total amount of nodes running in the network. This enforces Dione network as fast-finality chain.

DIONE token

DIONE token is a ERC20 token on Ethereum blockchain used as a staking token to run the Dione node and for decentralized governance.

Staking mechanism would encourage node operators to behave correctly as well as malicious nodes would lose their stakes. In order to run Dione node the operator has to stake at least 10,000 DIONE tokens.

Initial supply of DIONE tokens is 2,000,000. By that the maximum amount of nodes participating in Dione is limited to 200 at the initial start of Dione network. 30% of DIONE tokens would be allocated to Secured Finance team. On every block Dione miners would get 50 DIONE tokens as the mining reward.

Governance mechanism would take place on snapshot.page. The main application of governance descision is around required amount of DIONE tokens to stake in order to run Dione node. Additional governance descision could be proposed by DIONE token holders among the way.

Operations diagram



Dione core contributors:

Denis Davydov

Bach Adylbekov

We welcome every contributions big and small! Take a look at the community contributing notes. Please make sure to check the issues. Search the closed ones before reporting things, and help us with the open ones.


This project is licensed under the MIT license, Copyright (c) 2020 Secured Finance. For more information see LICENSE.md.