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Decentralised Blockchain Interoperability

Wanchain 2021

Multichain Bridges

  • Wanchain launches Universal Multichain Bridges With Shared Staking Assets

  • Wanchain becomes full EVM compatable

  • With multichain bridges mechanism, Wanchain integrates Bitcoin, Ethereum, BSC, XRP Ledger, Litecoin, Moonriver, Avalanche, Polkadot, Dogechain, Fantom.

Wanchain 4.0

T-Bridge Framework

  • T-Bridge framework enables cross-chain connection with private blockchains

  • T-Bridge enables the exchanges of assets and data between public and private blockchains

Galaxy Consensus

Galaxy Consensus Proof of Stake

  • Consensus mechanism upgraded to Galaxy Proof of Stake

  • Permissionless consensus mechanism based on Ouroboros Proof of Stake

  • Trustless & non-custodial delegation mechanism

Wanchain 3.0

Expansion of cross-chain mechanism to support both BTC and EOS transactions

  • Cross-chain transactions with BTC

  • Cross-chain transactions with EOS

Wanchain 2.0

Storeman group — Ethereum cross-chain transactions

  • Cross-chain transactions with Ethereum

  • Permissioned Storeman groups enable cross-chain transactions

Wanchain 1.0

Mainnet Launch

  • Wanchain launches an independent blockchain focused on developing the interoperability and privacy features which are prerequisites for the future of digital finance

  • Theoretical blueprints for interoperability features completed

  • Features private transactions and smart contracts at launch with work on interoperability features underway

Wanchain 5.0

wanBridges enable trustless cross-chain transactions

  • Permissionless wanBridge mechanism enables trustless cross-chain transactions between any pair of blockchains

  • Cross-chain wanBridges secured by trustless staking and delegation mechanism

  • Enables bidirectional asset transfer between Ethereum and Wanchain

Current Phase: Wanchain 2022

Enhanced Universal Bridges

  • Upgrade Gwan EVM to support latest EVM Opcodes, gas fees and all Ethereum-based dapps

  • Migrate Galaxy Consensus to the new Gwan EVM

  • Apply universal bridges for layer 1, layer 2, sidechain, and beyond

Roadmap.

Genesis

Wanchain is building a ‘Wide Area Network’ of blockchains to support a decentralised, interoperable future that empowers the world to create secure and fair solutions.

Vision

Wanchain exists at the intersection of people, processes and technology. It is a framework for society to build a sustainable decentralised future that is global, transparent and fair, while enabling new ways to work, interact, create and trust.

Implementation

While connecting the world's public and private blockchains, Wanchain confronts every assumption and relies on rigorous research to push the boundaries of blockchain technology. 

TECHNOLOGY.

Decentralised, secure solution for the masses, underpinned by cutting-edge evidence-based science.

Github

Github

DevDocs

Documents

Tech Chat

Support

Galaxy Consensus is an efficient, secure and practical Proof of Stake consensus protocol developed by world-class researchers and academics.

Based on Cardano's Ouroboros, Galaxy Consensus improves the random number generation and block production mechanisms to maximise security and fairness.

Blocktime (s)

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Annual Rewards Rate

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Staked Amount (WAN)

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Crosschain Transactions

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Annual Rewards Rate

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Staked Amount (WAN)

Wanchain is an ever-growing network of direct bridges connecting Bitcoin, Ethereum, Avalanche, Binance Smart Chain, Fantom, Litecoin, Moonriver, Moonbeam, XRP Ledger, Polkadot and more.

Using Wanchain's universal crosschain bridges, you can bridge both fungible and non-fungible tokens. Assets can be transferred directly between chains and layers without relying on relay chains or other intermediaries.

Random Number Generation.

Galaxy Consensus uses a Random Number Proposer (RNP) group to ensure safe and efficient random number generation. The RNP group uses commitment, zero-knowledge proof, distributed secret sharing and threshold signatures, among other mechanisms, to verify data and provide consensus.

1. Commitment

Galaxy Consensus ensures that cheating does not occur by using a commitment (CM), a cryptographic tool that guarantees that "the evidence is retained" without exposing the original data. In Galaxy Consensus, each RNP node calculates the commitment of its selected data and sends it to the chain for verification.

2. Zero-knowledge proof

Galaxy Consensus encrypts the original data using a public key encryption algorithm, and then sends the encryption result to the chain to ensure the confidentiality of the data. At the same time, zero-knowledge proof is used to ensure that the encrypted data fully matches the commitment.

3. Distributed secret sharing

All RNP nodes generate a common group secret key. The key is never produced completely but is split into key fragments, meaning each RNP node has a share of the group secret key. Together, the RNP nodes can synthesise the group signature. The hash value of the signature is the final random number output.

4. Threshold signatures

As long as the participating RNP nodes exceed the threshold number of participants in the calculation, the group signature can be synthesised. The refusal of any individual RNP node to participate in the calculation has no impact on the group's ability to safely and efficiently generate random numbers.

1. Leader group selection

Using a follow-the-stake-ratio algorithm, each PoS node is assigned a certain breadth of time proportional to its stake. The random number generated by the RNP group is used to determine a specific time. Whichever node's breadth of time corresponds to the specific time is selected to be in the Leader Group. The Leader Group is responsible for running the ULS algorithm.

2. Secret message array

Once selected, the leader group communicates on chain by generating a secret message array (SMA) inside the group for subsequent assignment of block production rights. This is key to maintaining anonymity. After this phase is complete, all nodes in the Leader Group decrypt the data and get a random data sequence needed to run the leader group selection algorithm.

3. Leader group sorting

After the secret message array is generated, the random number is updated, and the newly generated random number is used as a seed to sort the nodes in the leader group. A hash operation is performed on the group node’s public keys and the random number, and the nodes are sorted in ascending order based on the operation result to determine subsequent block production rights.

4. Slot leader selection

The distribution of block production rights is carried out with equal probability for all nodes in the leader group and accounts for the stake ratio of each node involved in consensus. This ensures that the ULS algorithm is fair, verifiable and anonymous and maximising the safety and liveness of the blockchain.

Block Production.

Galaxy Consensus uses a unique leader selection (ULS) algorithm, designed from the ground up to consider fairness, verifiability and anonymity. The ULS algorithm employs a variety of cryptographic methods such as secret sharing and zero-knowledge proofs to realise the anonymous selection of a single unique valid block producer in a fixed time window. The ULS algorithm also reduces the probability of forks and improves the efficiency of consensus.

Economic Incentives.

PoS nodes are incentivised to perform Galaxy Consensus, validate blocks and support the network. 10% of the max supply -- or 21 million WAN coins -- are reserved to incentivise PoS nodes to perform Galaxy Consensus and produce blocks. These incentives begin at 2.5 million WAN coins in the first year, and are reduced by 12% in each subsequent year.

RNP node rewards

Random number generation is a vital component of Galaxy Consensus. RNP nodes that fully engage in the process of random number generation receive rewards.

Leader node rewards

 Leader nodes are rewarded for generating a secret message array and for block production. The greater a node’s activity, the greater the rewards.

Delegator rewards

Any user can delegate their WAN coins to PoS validator nodes or bridge nodes to earn rewards while contributing to the security of the Wanchain blockchain and crosschain bridge network.

Bridge Capabilities.

Swap.

Swap between multiple assets on different blockchains.

Transfer.

Transfer fungible or non-fungible assets between blockchains.

Communicate.

Communicate arbitrary data and messages across blockchains.

Call.

Call smart contract functions on one blockchain using smart contracts on another.

A secured bridge network

All Wanchain bridges are secured by a shared pool of WAN coins that serve to overcollateralise the crosschain assets. All bridge node operators must stake sufficient funds to participate in the network.

sMPC & TSS

Wanchain bridge nodes collectively use a combination of Secure Multiparty Computation (sMPC) and a Threshold Signature Scheme (TSS) to secure crosschain assets.

Bridge rewards

 Bridge node operators are required to stake WAN coins to overcollateralise crosschain assets. This stake doubles as a security measure to ensure honest node behaviour. Both bridge node operators and delegators earn rewards for their efforts.

Hightlights.

Universal Crosschain Bridges.

Wanchain PoS Galaxy Consensus.

Direct Bridges

Direct bridges require no intermediaries or relay network to complete crosschain transactions. When moving assets from one blockchain to another, the assets are transferred directly from the source chain to the destination chain.

Layer 2 Bridges

Layer 2 bridges use decentralised liquidity pools to bridge assets between popular Ethereum Layer 2 networks like Polygon and Arbitrum. Assets do not need to pass through the Layer 1 blockchain, thereby preserving the Layer 2 network's high transaction throughput and relatively low gas fees.

NFT Bridges

NFT bridges use the lock-mint-burn-unlock mechanism. When moving NFTs from one blockchain to another, the original NFT is securely locked on the source chain before a duplicate is minted on the destination chain. NFT IDs and attributes are also transferred.

Wanchain Crosschain Bridge Types.

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