Banc Vault Product Guideline

Stage	Target	Deliverables
Stage 1 (2025-2026)	Private asset transfer	Proof-based vault system with TEE + PLONK integration
Stage 2 (2026-2027)	Institutional custody	Multi-user permissions, stablecoin settlement, API integration
Stage 3 (2027-2028)	Full institutional integration	Cross-chain settlement, automated compliance reporting

Stage 1 — Private Asset Transfer (Coming Soon on BNB testnet)

The first operational phase of Banc Vault focuses on private peer-to-peer asset transfers. It establishes the baseline cryptographic flow that all later vault products build upon.

Functional Overview

Function	Description
Private Transfer	Assets move between addresses without exposing sender, receiver, or amount.
Confidential Balance	Only the owner can view holdings; others see cryptographic commitments.
Compliance Proof	Each transfer accompanied by a proof verifying jurisdictional and KYC rules.
Audit Record	A transaction hash stored for regulatory validation.

Transfer Flow

(1) Sender requests transfer → 
(2) Wallet encrypts transaction data → 
(3) TEE validates compliance (KYC + limits) → 
(4) PLONK Prover generates proof → 
(5) Compliance Engine approves → 
(6) Transaction broadcast to chain → 
(7) AuditHash recorded.

Every transaction executes only when both the ZK proof and compliance checks succeed.

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Stage 2 — Institutional Custody (Planned)

Once the private transfer system stabilizes, Banc Vault will expand into institutional custody and settlement.

Key Features (Under Development)

Feature	Description
Multi-User Custody	Enables shared vault access for fund managers and clients.
Regulated Stablecoin Settlement	Integrates licensed stablecoins for cross-border payments.
Custodian APIs	Allows external custodians to use Banc Vault as back-end privacy infrastructure.
Insurance & Recovery Mechanisms	TEE-signed recovery keys stored in multi-sig custody for compliance.

This phase makes Banc Vault usable by professional custodians, asset managers, and banks needing compliant privacy infrastructure.

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Stage 3 — On-Chain Fund & Institutional Integration (Planned)

The final stage of Banc Vault’s roadmap is full integration into on-chain financial operations, such as fund issuance, trading desks, and RWA marketplaces.

Planned Capabilities

• API-Driven Fund Subscriptions — allow regulated funds to issue or redeem shares through vault operations.

• Cross-Chain Settlement Layer — extend vault operations across EVM chains via zkBridge.

• Automated Reporting Interface — regulators can subscribe to real-time compliance proof streams.

• Integration with Smart Asset Framework — vault holdings become directly programmable financial contracts.

This stage transforms the Vault from a secure storage system into a regulated DeFi infrastructure layer.

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User Journey

The Banc Vault user experience is designed to be familiar to financial users but cryptographically secured under the hood.

User Journey: Example

1. Access — user logs into the Banc Wallet or an institutional custodian portal integrated with the Vault API.

2. Deposit — user deposits a tokenized asset (bAsset) into their private vault.

3. Proof Generation — wallet client calls the local PLONK library to create a compliance proof.

4. Validation — proof verified by the Compliance Engine; TEE confirms jurisdiction and KYC status.

5. Transfer or Redemption — approved transactions settle on Binance Chain.

6. Audit Access — user and regulator can view cryptographic proof of transaction validity.

Interface Types

• Retail Wallet Interface — for individual private transfers.

• Institutional Dashboard — for batch transactions and compliance reports.

• API Gateway — for external custodian integration.

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Vault Data Structure

Each vault account is a confidential container defined by cryptographic commitments.

Field	Description
vault_id	Unique encrypted identifier
owner	Wallet address (hashed)
assets	List of encrypted asset commitments
proof_state	Current ZK proof references
audit_log	Hash pointer to on-chain ledger
jurisdiction	Applicable compliance regime
permissions	Access control (multi-sig or delegation)

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Regulatory Transparency

While all vault data is private, auditability is preserved via a public Audit Ledger. Each transaction in Banc Vault emits a structured compliance hash:

AuditHash = H(
   proof_id,
   vault_id,
   jurisdiction_rule,
   timestamp,
   compliance_result,
   regulator_signature
)

Regulators can:

• Verify the existence and validity of a transaction;

• Confirm compliance modules executed correctly;

• Never access the private payloads.

This provides verifiable trust without compromising confidentiality.

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Institutional Integration Example

Scenario: A licensed asset manager wants to offer on-chain fund shares but maintain investor confidentiality.

Process Flow

1. Issuer Onboarding: fund registers its asset class under Banc’s Smart Asset Framework.

2. Investor Verification: investor KYC processed in TEE; accreditation proof generated.

3. Vault Allocation: investor receives encrypted vault allocation of fund tokens.

4. Transfers: investor trades privately with other verified participants.

5. Regulatory Oversight: regulator node verifies compliance proofs periodically.

Outcome: the entire fund ecosystem operates with regulatory visibility but zero exposure of investor identities or holdings.