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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