# GRU Standards Profile

**Purpose:** Define the machine-readable standards profile for canonical `c* V2`, mirrored `cW*`, x402 capability, GRU governance/policy enforcement, and the broader ISO-4217-plus asset scope.

## File

- **Config:** [`config/gru-standards-profile.json`](../../config/gru-standards-profile.json)

## What it standardizes

This profile is the shared standards contract between docs, configs, operators, and future contract work. It records:

- the canonical methodology: **Chain 138 keeps canonical `c*`; compatible public chains carry mirrored `cW*`**
- the payment profile for **x402**
- the required base-token standards for `c* V2`
- the transport / wrapper standards for `cW*`
- the GRU M00 governance and policy standards
- the broader asset scope: **ISO-4217 fiat currencies, approved commodities, and future monetary units**

## Compatibility boundary

The profile does **not** mean every public chain or every currency is live today.

A destination chain is only considered compatible for GRU Transport when all of the following are true:

1. A `138 -> chain` mapping exists in [`config/token-mapping-multichain.json`](../../config/token-mapping-multichain.json).
2. The destination `cW*` deployment is non-zero in [`cross-chain-pmm-lps/config/deployment-status.json`](../../cross-chain-pmm-lps/config/deployment-status.json).
3. `bridgeAvailable` is `true` in that deployment status entry.
4. The chain is explicitly enabled in [`config/gru-transport-active.json`](../../config/gru-transport-active.json).

That keeps the standards profile broad while keeping the active transport overlay conservative and operationally precise.

## Relationship to other files

- [`config/gru-iso4217-currency-manifest.json`](../../config/gru-iso4217-currency-manifest.json)
  Tracks which currencies exist and their current lifecycle state.
- [`config/gru-transport-active.json`](../../config/gru-transport-active.json)
  Activates the currently enabled canonical tokens, compatible destination chains, and public pools.
- [GRU_C_STAR_V2_STANDARDS_MATRIX_AND_IMPLEMENTATION_PLAN.md](GRU_C_STAR_V2_STANDARDS_MATRIX_AND_IMPLEMENTATION_PLAN.md)
  Explains the same standards in narrative form and maps them to contracts/facets.
- [CHAIN138_X402_TOKEN_SUPPORT.md](CHAIN138_X402_TOKEN_SUPPORT.md)
  Records the current x402-ready token state on Chain 138.
- [GRU_FX_CURRENCY_ONBOARDING_CHECKLIST.md](GRU_FX_CURRENCY_ONBOARDING_CHECKLIST.md)
  Uses this standards profile as part of the acceptance gate for new currencies.

## Current intent

- **Standards scope:** x402, EIP-712, ERC-2612, ERC-3009, ERC-5267, AccessControl, Pausable, ISO-20022-aligned policy routing, and GRU M00 governance/policy facets.
- **Asset scope:** all currencies added to the GRU manifest, not just the currently active USD lanes.
- **Transport scope:** every public chain that is structurally compatible according to mapping, deployment, and bridge metadata.