PGC-1

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Overview

PGC-1 is the ownership and access layer for a single game in Peridot. Responsibilities:

• Store canonical gameId
• Store canonical publisher address
• Store canonical metadata URI
• Initialize canonical game state during deployment
• Mint non-transferable licenses
• Provide entitlement and access checks
• Manage authorized minters
• Preserve the strongest valid entitlement for each user

PGC-1 does NOT handle pricing, payments, moderation, catalog listing, or publisher-wide subscriptions.

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Data Structures

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LicensePolicy

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Rules

• expiresAt = 0 means permanent license
• expiresAt > now means temporary valid license
• expiresAt < now means expired license

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State

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Functions

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1. initialize

Initializes canonical game state. function initialize(gameId, publisher, metadataURI, initialMinter)

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Params

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Rules

• MUST only be callable once
• gameId MUST NOT be empty
• publisher MUST NOT be zero address
• metadataURI MUST NOT be empty
• initialMinter MUST NOT be zero address

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Behavior

• set canonical gameId
• set canonical publisher
• set canonical metadataURI
• authorize initialMinter

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Notes

• On EVM implementations this MAY be represented by constructor arguments
• On non-constructor environments this SHOULD be represented by an initialization function

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2. mintLicense

Grants or upgrades a license for a user. function mintLicense(to, expiresAt)

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Params

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Rules

• Only authorized minter
• to MUST NOT be zero address
• Permanent license MUST NOT be downgraded by a temporary license
• The strongest valid entitlement MUST be preserved

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Behavior

If the user has no license:

• create new license

If the user has an expired license:

• replace with incoming license

If the user has a temporary license and incoming license is permanent:

• upgrade to permanent

If the user has a permanent license and incoming license is temporary:

• keep permanent license
• incoming temporary license MUST NOT downgrade access

If the user has a temporary license and incoming temporary license expires later:

• extend or replace with later expiry

If the user has a temporary license and incoming temporary license expires earlier:

• keep current license

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3. hasLicense

Returns whether a user owns a valid license for this game. function hasLicense(user)

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Params

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Returns

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Rules

• Expired licenses MUST return false

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4. canAccessGame

Returns whether a user can currently access this game. function canAccessGame(user)

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Params

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Returns

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Rules

• Expired licenses MUST return false

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Notes

• This function is suitable as an entitlement check for launcher access, download authorization, and future DRM-like enforcement
• This function alone is NOT a complete DRM system

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5. getLicensePolicy

Returns license policy data for a user. function getLicensePolicy(user)

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Params

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Returns

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6. setMinter

Updates minter authorization. function setMinter(account, isAuthorized)

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Params

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Rules

• Only publisher
• account MUST NOT be zero address
• Event SHOULD be emitted

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7. isMinter

Returns whether an account is an authorized minter. function isMinter(account)

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Params

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Returns

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8. getPublisher

Returns canonical publisher address. function getPublisher()

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Returns

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9. getMetadataURI

Returns canonical metadata URI. function getMetadataURI()

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Returns

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10. getGameId

Returns canonical game identifier. function getGameId()

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Returns

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11. setPublisher

Updates publisher address. function setPublisher(publisher)

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Params

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Rules

• Only current publisher
• publisher MUST NOT be zero address
• Event SHOULD be emitted

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Notes

• This function is optional if publisher is intended to be immutable in a specific implementation

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12. setMetadataURI

Updates metadata URI. function setMetadataURI(metadataURI)

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Params

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Rules

• Only publisher
• metadataURI MUST NOT be empty
• Event SHOULD be emitted

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Notes

• This function is optional if metadata is intended to be immutable in a specific implementation

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Access Control

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Requirements

• initialize() MUST set canonical gameId, publisher, and metadataURI
• initialize() MUST only be executable once
• gameId MUST be stored in PGC-1
• publisher MUST be stored in PGC-1
• metadataURI MUST be stored in PGC-1
• mintLicense() MUST only be callable by authorized minters
• getPublisher() MUST return the canonical publisher for the game
• getMetadataURI() MUST return the canonical metadata URI for the game
• getGameId() MUST return the canonical game identifier
• hasLicense(user) MUST return false for expired licenses
• canAccessGame(user) MUST return false for expired licenses
• Licenses MUST remain non-transferable
• Permanent licenses MUST NOT be downgraded by temporary licenses
• The strongest valid entitlement MUST be preserved for each user

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Transferability

PGC-1 licenses are strictly non-transferable. Implementations MUST ensure:

• licenses cannot be transferred between users
• any transfer attempt MUST fail

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Subscription Compatibility

PGC-1 is intended for game-specific entitlement. Publisher-wide subscriptions, game bundles, or ecosystem-wide passes SHOULD be implemented in a separate access layer or contract. Such systems MAY grant additional access, but MUST NOT invalidate or downgrade a stronger permanent game license already held by the user.

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Notes

• PGC-1 is the source of truth for publisher and metadata
• Registry is the source of truth for game validity and moderation
• Game Store is the source of truth for pricing and purchase flow
• PGC-1 should remain minimal and ownership-focused

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Chain Support

PGC-1 is designed to be chain-agnostic.

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EVM

• Built on top of ERC-1155
• Extended with license logic
• Transfer behavior MUST be disabled or restricted

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Solana

• Implemented using Token-2022
• Extensions: NonTransferable, Metadata Pointer