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Documentation Index

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Unified liquidity and cross-chain swaps are V2 features — not yet live. V1 supports smart contracts, deposits, and withdrawals on each chain independently. Cross-chain swapping (BTC ↔ ZEC ↔ DOGE) is coming in V2.

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What is Unified Liquidity?

Today, BTC, ZEC, and DOGE each live in separate ecosystems. Swapping between them requires:
  1. Sell your BTC on a centralized exchange
  2. Receive ZEC
  3. Withdraw to your wallet
This involves trusting a third party, paying high fees, and waiting. NEXUS V2 eliminates this. All three assets are accessible from a single protocol. You express what you want and solvers (automated market participants) compete to give you the best rate — no exchange account needed.

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V1 (Current) — Independent Chain Operations

Each chain works fully today, just independently:
ChainDepositsWithdrawalsSmart Contracts
Bitcoin✅✅✅
Zcash✅ (t-addr)✅ (t-addr)✅
Dogecoin✅✅✅
BTC ↔ ZEC swaps❌ V2——
BTC ↔ DOGE swaps❌ V2——
ZEC ↔ DOGE swaps❌ V2——
In V1, you can deposit BTC and use DeFi contracts on NEXUS, or deposit ZEC and use DeFi contracts on NEXUS — but moving BTC value to a ZEC address requires V2.

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V2 — Intent Exchange

V2 introduces intent exchange: declare what you want, solvers compete to fill it. 
You declare:  "Swap 1 BTC for at least 50,000 DOGE"
                          ↓
Solver network sees your intent
                          ↓
Solvers compete to find the best route and rate
                          ↓
Best solver executes the swap across chains
                          ↓
You receive DOGE; solver keeps a small fee

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Why Intent Exchange?

ProblemHow Intent Exchange Solves It
Front-runningIntents are committed before execution — no one can trade ahead of you
SlippagePrice is locked when you create the intent
Counterparty riskAll-or-nothing: you either get the minimum promised or nothing
ComplexityYou just say what you want — solvers handle routing

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V2 AMM Pools

Alongside intent exchange, V2 introduces on-chain liquidity pools that anyone can provide liquidity to: 
BTC/ZEC Pool
BTC/DOGE Pool
ZEC/DOGE Pool
Any Token/vSAT Pool (NEP-20 tokens)
Benefits of providing liquidity:
  • Earn a share of swap fees (0.3% per swap)
  • Deep liquidity = better prices for everyone
  • Withdraw any time

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Concentrated Liquidity (V3-style)

NEXUS AMM V3 lets liquidity providers choose a price range to concentrate their liquidity in. Liquidity in range earns more fees than spread across all prices — more capital-efficient.

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V2 Swap Preview (Code, Not Yet Live)

// This is what V2 swap will look like — not available yet
const intent = await client.createSwapIntent({
  fromChain: 'bitcoin',
  toChain: 'dogecoin',
  fromAmount: '100000000',      // 1 BTC in satoshis
  minToAmount: '50000000000',   // Minimum 500 DOGE (won't execute below this)
  recipient: 'DQkw...',         // Your Dogecoin address
  deadline: Math.floor(Date.now() / 1000) + 3600  // Expires in 1 hour
});

// Wait for a solver to fill your intent
const result = await client.waitForIntentFulfillment(intent.id);
console.log('Received DOGE:', result.amountOut);

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Supported Trading Pairs (V2)

PairDescription
BTC/ZECBitcoin ↔ Zcash
BTC/DOGEBitcoin ↔ Dogecoin
ZEC/DOGEZcash ↔ Dogecoin
Any/NEP-20Any base asset ↔ NEXUS tokens
Want to follow V2 development? Join the Discord for updates.