Published policy

Fair Draw Integrity and Commitment Policy (v2.3)

Mathematical and cryptographic verification procedures for monthly fair draws, commitment hashes, public audits, and winner benefit execution.

Slug: lucky-draw-rules-fairnessEffective: 2026-08-20Published: 8/20/2026Statutory & Rulebook Codified

Fair Draw Integrity and Commitment Policy

Subidha Furniture operates monthly lucky draws under cryptographic and operational safeguards that prevent retrospective tampering, ensuring absolute transparency.

1. Commit-then-Reveal Cryptographic Protocol

To mathematically prove that draw outcomes are not manipulated:

**The Secret Seed**: Before the draw, an automated system generates a random secret cryptographic seed combined with the draw date and batch identifier.
**Pre-Draw Public Commitment Hash**:

The system computes the SHA-256 hash: `Hash = SHA256(secret_seed + batch_code + draw_month)`.
This 64-character hexadecimal hash is published on the public website and social channels **prior to the draw event**.

**Physical / Digital Draw Selection**:

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The winning Lucky ID (00 to 99) is determined through an open, public draw conducted at the showroom in the presence of attending customers.

**Post-Draw Secret Reveal**:

Immediately following selection, the secret seed is published.
Any customer or public auditor can input the revealed seed into standard SHA-256 tools to confirm that the hash matches the pre-published commitment.

2. Batch Eligibility Freeze & Immutable Snapshots

**Eligibility Lock**: Twenty-four (24) hours prior to the draw, the batch is transitioned to `LOCKED` status.
**Draw Eligibility Snapshot**:

An immutable snapshot (`DrawEligibilitySnapshot`) records every eligible customer, Lucky ID, subscription reference, and payment status.
New enrollments, cancellations, or payment edits are strictly locked out of the snapshot.
The winner selection algorithm evaluates **only** the frozen snapshot, preventing live database manipulation.

3. Winner Benefit Execution Invariants

**100% Future EMI Waiver**: The verified winner has all future remaining EMI installments from the winning month onward waived 100%.
**Zero Cash Refund Invariant**: Past settled EMIs and advance payments are non-refundable. They remain settled retail consideration.
**Title Perfection**: Upon execution of the waiver, full title, ownership, and warranty rights transfer unconditionally to the winning customer.

4. Public Winner Presentation and Privacy

**Public Display**: Winning numbers, batch codes, draw months, and commitment verification details are displayed on the public Winner Showcase.
**Data Masking**: To protect customer privacy under the Digital Personal Data Protection Act, 2023, customer names are masked (e.g., "Amit K***, Lucky ID: 88").

Legal usage note

Published policy text is for customer clarity, operational governance, and statutory compliance.
Contracts, tax invoices, receipts, and audited delivery records remain the canonical transaction source.
For contract-specific clarifications, contact the Subidha Furniture showroom administration.