Overview
NEXUS-Dogecoin brings smart contract programmability to Dogecoin, leveraging its fast block times and low fees for quick deposits and withdrawals.
Security Model
NEXUS-Dogecoin provides trustless verification through:
Cryptographic Soundness (ZK-STARK)
- State transitions proven via ZK-STARK proofs
- No trusted setup required
- Post-quantum secure
- Anyone can verify proofs
Fraud Proofs
- Provers post bonds on Dogecoin L1
- State commitments via OP_RETURN outputs
- Invalid state transitions can be challenged
- Fast finality (~6 min) enables quicker dispute resolution
- Fraudulent provers lose bonds to challengers
Combined Model
ZK-STARK Proofs (Cryptographic) + Economic Bonds (Dogecoin L1)
=
Trustless Verification with Fast Finality
Architecture
┌─────────────────────────────────────────────────────────────────┐
│ NEXUS-Dogecoin │
├─────────────────────────────────────────────────────────────────┤
│ │
│ ┌──────────────────────────────────────────────────────────┐ │
│ │ Dogecoin L1 │ │
│ │ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │ │
│ │ │ P2PKH │ │ Fast │ │ State │ │ │
│ │ │ Vaults │ │ Blocks │ │ Commits │ │ │
│ │ └─────────────┘ └─────────────┘ └─────────────┘ │ │
│ └──────────────────────────────────────────────────────────┘ │
│ │ │
│ ▼ │
│ ┌──────────────────────────────────────────────────────────┐ │
│ │ NEXUS Layer │ │
│ │ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │ │
│ │ │ WASM VM │ │ DOGE/BTC │ │ Meme │ │ │
│ │ │ Contracts │ │ Swaps │ │ Tokens │ │ │
│ │ └─────────────┘ └─────────────┘ └─────────────┘ │ │
│ └──────────────────────────────────────────────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────┘
Key Advantages
Fast Block Times
- Dogecoin: ~1 minute blocks
- Bitcoin: ~10 minute blocks
- Faster deposit confirmations
Low Fees
- Minimal transaction fees
- Cost-effective for small deposits
- Accessible to all users
High Throughput
- More transactions per hour
- Better for frequent operations
- Ideal for micro-transactions
Supported Features
| Feature | Status | Description |
|---|
| P2PKH Vaults | ✅ | Standard Dogecoin addresses |
| Fast Deposits | ✅ | ~6 min confirmation (6 blocks) |
| State Commits | ✅ | On-chain commitments |
| Smart Contracts | ✅ | Full WASM support |
| Cross-Contract Calls | ✅ | xcc and delegate calls |
| DOGE/BTC Swaps | 🔄 V2 | Via intent exchange |
| DOGE/ZEC Swaps | 🔄 V2 | Via intent exchange |
| Unified Liquidity | 🔄 V2 | Cross-chain pools |
Deposit Flow
// 1. Get vault address
const vault = await client.getVaultAddress('dogecoin');
console.log('Deposit DOGE to:', vault.vaultAddress);
// 2. Send Dogecoin
// dogecoin-cli sendtoaddress <VAULT_ADDRESS> 1000
// 3. Wait for confirmations (~6 minutes for 6 blocks)
// 4. Balance credited on L2
const balance = await client.getBalance();
Withdrawal Flow
// Request withdrawal
await client.requestWithdrawal(dogeAddress, amount, 'dogecoin');
// Withdrawals processed in batches
// Receive DOGE on L1
Vault Structure
Dogecoin vaults use P2PKH (Pay-to-Public-Key-Hash) addresses:
Vault Address (P2PKH)
│
├── L1 balance = L2 balance (1:1 backing)
│
└── User can spend after timelock (escape hatch)
└── Using CLTV (CheckLockTimeVerify)
Configuration
[dogecoin]
rpc_url = "http://localhost:22555"
rpc_user = "user"
rpc_password = "password"
network = "regtest" # mainnet, testnet, regtest
[dogecoin.vault]
escape_timelock = 1440 # ~1 day in blocks (1 min blocks)
[dogecoin.state_commit]
interval_blocks = 60 # Every hour
Cross-Chain Swaps (V2)
Cross-chain swaps between DOGE/BTC/ZEC will be available in V2 via intent exchange.
DOGE → BTC (V2)
// V2: Intent-based cross-chain swap
const intent = await client.createSwapIntent({
fromChain: 'dogecoin',
toChain: 'bitcoin',
fromAmount: dogeAmount,
minToAmount: minBtcOut,
recipient: btcAddress
});
// Intent matched and executed by solvers
await client.waitForIntentFulfillment(intent.id);
BTC → DOGE (V2)
// V2: Intent-based cross-chain swap
const intent = await client.createSwapIntent({
fromChain: 'bitcoin',
toChain: 'dogecoin',
fromAmount: btcAmount,
minToAmount: minDogeOut,
recipient: dogeAddress
});
V1 supports DOGE deposits, withdrawals, and smart contracts. Unified liquidity with BTC/ZEC via intent exchange is coming in V2.
State Commitments
NEXUS posts state commitments to Dogecoin:
Dogecoin Block 1000: State Root 0xabc... (OP_RETURN)
Dogecoin Block 1060: State Root 0xdef... (OP_RETURN)
- Lower fees than Bitcoin
- Faster finality
- More frequent commits possible
Confirmation Times
| Chain | Block Time | Confirmations | Total Time |
|---|
| Bitcoin | 10 min | 6 | ~60 min |
| Zcash | 2.5 min | 10 | ~25 min |
| Dogecoin | 1 min | 6 | ~6 min |
Dogecoin offers the fastest deposit experience in the NEXUS ecosystem.
Use Cases
Micro-Transactions
Low fees make DOGE ideal for small amounts:
- Tipping
- Gaming
- Micro-payments
Quick Swaps
Fast confirmations enable:
- Rapid BTC acquisition via DOGE
- Quick arbitrage opportunities
- Time-sensitive trades
Meme Token Ecosystem
Deploy meme tokens on NEXUS with DOGE:
// Deploy meme token
const token = await client.deployContract(memeTokenWasm, [
'ShibaNexus', 'SHIBNEX', 18, '1000000000000'
]);
Comparison
| Feature | NEXUS-Doge | Native Doge | Wrapped DOGE |
|---|
| Smart Contracts | ✅ Full | ❌ | Depends |
| Block Time | 1 min | 1 min | Varies |
| Cross-Chain | 🔄 V2 | ❌ | ✅ |
| Trustless | ✅ | ✅ | Usually ❌ |
| DeFi | ✅ | ❌ | Limited |
| Fees | Low | Low | Varies |
Roadmap
V1 (Current)
- ✅ Full WASM smart contracts
- ✅ Cross-contract calls & delegate calls
- ✅ P2PKH vaults with escape hatch
- ✅ ZK-STARK verification
- ✅ Fast deposits (~6 min)
V2 (Planned)
- 🔄 Unified liquidity with BTC/ZEC via intent exchange
- 🔄 Cross-chain swaps (DOGE/BTC/ZEC)
- 🔄 Meme token liquidity pools
