web/docs/membership-pricing-policy.md

EDUT Membership Pricing Policy (v1)

This policy defines deterministic rules for membership mint pricing.

Policy Objectives

1. Keep onboarding friction low.
2. Guarantee mint-cost coverage.
3. Support configurable growth tiers.
4. Keep pricing behavior transparent and auditable.

Base Rules

1. Membership is paid.
2. Membership is required for marketplace purchases.
3. Membership price is configurable but must not go below policy floor.

Floor Rule

1. Default floor target: USD 5.00 equivalent.
2. Effective configured price must satisfy:

configured_price >= max(minimum_floor, estimated_network_cost * safety_multiplier)

3. Recommended default safety_multiplier: 1.5.

Supported Settlement Currencies (v1)

1. USDC on Base (preferred stable settlement).
2. ETH on Base (optional).

BTC display may be shown as reference only; settlement remains Base-native.

Tier Policy (Optional)

1. Tiering is supply-based (total_membership_minted).
2. Each tier has:
   • max_supply
   • currency
   • amount_atomic
3. Price transitions occur automatically when supply crosses a tier boundary.
4. Tier changes emit on-chain events.

Quote Lock Requirements

Each mint quote must include:

1. quote_id
2. wallet
3. currency
4. amount_atomic
5. expires_at
6. policy_hash

A wallet confirmation is valid only when tx matches quote values exactly.

Governance Controls

1. Price updates are owner-controlled and event-emitted.
2. Recommended: timelocked updates for non-emergency changes.
3. Emergency freeze may pause minting without changing historical receipts.

UX Disclosure Rules

1. Show exact payable amount before wallet confirmation.
2. Show currency clearly (USDC or ETH).
3. If BTC equivalent is shown, label it reference only.
4. Never imply investment return or speculative upside.

Evidence Requirements

For each membership mint, persist:

1. quote payload
2. policy hash
3. tx hash
4. chain id
5. wallet
6. confirmed amount
7. activation timestamp

Non-Goals (v1)

1. Native BTC settlement.
2. Multi-chain settlement.
3. Dynamic market-maker pricing.