Ethereum 및 L2에서의 프라이버시 커스터디

// Conceptual integration pattern
// Generate proof of reserves
const reserveProof = await nixZK.proveReserves({
  vaults: custodyVaults,
  liabilities: encryptedClientBalances,
  threshold: 1.0 // 100% backed
});

// Client verifies their share
const clientProof = await nixZK.proveClientReserve({
  clientId: clientKycHash,
  clientBalance: encryptedBalance,
  reserveProof: reserveProof
});

// Returns: { sufficient: true, timestamp: ... }

// Conceptual integration pattern
// Onboard client with private account
const clientAccount = await nixCustody.createAccount({
  clientKyc: kycProofHash,
  jurisdiction: encryptedJurisdiction,
  accountType: "institutional"
});

// Deposit assets privately
await clientAccount.deposit({
  asset: "ETH",
  amount: encryptedAmount,
  source: sourceProof
});

// Client views balance (only they can decrypt)
const balance = await clientAccount.getBalance(clientPrivKey);

// Conceptual integration pattern
// Initiate confidential settlement
const settlement = await nixCustody.createSettlement({
  from: clientA.account,
  to: clientB.account,
  asset: "USDC",
  amount: encryptedAmount
});

// Both parties approve privately
await settlement.approve(clientA.signature);
await settlement.approve(clientB.signature);

// Execute atomically - no public trace
const proof = await settlement.execute();

// Conceptual integration pattern
// Create private multi-sig vault
const vault = await nixCustody.createMultiSig({
  signers: encryptedSignerSet, // Hidden
  threshold: encryptedThreshold, // Hidden
  policy: encryptedPolicy
});

// Signer approves without revealing identity
const approval = await nixZK.proveSignerApproval({
  vault: vault.id,
  signer: signerProof, // ZK membership proof
  transaction: txHash
});

// Execute when threshold reached
await vault.executeWhenThreshold(approvals);

// Conceptual integration pattern
// Generate regulatory report
const report = await nixCompliance.generateReport({
  period: "Q4-2024",
  jurisdiction: "US-SEC",
  reportType: "custody-attestation"
});

// Prove AML compliance without exposing clients
const amlProof = await nixZK.proveAmlCompliance({
  accounts: allClientAccounts,
  sanctionsList: currentSanctions,
  timeframe: reportPeriod
});

// Grant auditor access to encrypted details
await report.grantAuditorAccess(auditorPubKey);

// Conceptual integration pattern
// Initialize private cold storage
const coldVault = await nixCustody.createColdStorage({
  addresses: encryptedAddresses, // Hidden
  totalCapacity: encryptedCapacity,
  rebalanceThreshold: encryptedThreshold
});

// Prove cold storage reserves
const coldProof = await nixZK.proveColdReserves({
  coldVault: coldVault.id,
  minPercent: 80 // Prove >= 80% in cold
});

// Private rebalance hot <-> cold
await nixCustody.privateRebalance({
  from: hotWallet,
  to: coldVault,
  amount: encryptedAmount
});