[WIP] Fix ERC proposal file to pass automated validator

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Corrigir o arquivo de proposta ERC para que o build do repositório ethereum/ERCs passe no validador automático, conforme os erros reportados: 1. O nome do arquivo deve ser eip-8040.md, refletindo o header 'eip: 8040'. 2. Todas as menções a ERC-20, ERC-721, ERC-1155 devem ser links para o padrão correspondente. Todos os outros requisitos como preâmbulo, seções obrigatórias, discussion-to válido e description já estão atendidos. Substituir o arquivo ERCS/eip-8040.md pelo conteúdo abaixo, garantindo que os links estejam corretos e o nome do arquivo seja eip-8040.md. Este PR resolve todos os erros do validador e torna o ERC apto a ser aceito.

Arquivo corrigido:

---
eip: 8040
title: ESG Tokenization Protocol
description: ESG-compliant, AI-native asset tokenization with quantum auditability and lifecycle integrity.
author: Leandro Lemos (@agronetlabs) <[email protected]>
discussions-to: https://ethereum-magicians.org/t/erc-8040-esg-tokenization-protocol/25846
status: Draft
type: Standards Track
category: ERC
created: 2025-09-06
requires: 20, 721, 1155
---

## Abstract

This ERC defines an AI-native protocol for ESG-compliant asset tokenization, with quantum auditability, compliance-grade metadata, and lifecycle integrity.

## Specification

### Metadata Structure

Tokens MUST expose a metadata JSON with the following minimum fields:

```json
{
  "standard": "ERC-ESG/1.0",
  "category": "carbon",
  "geo": "BR-RS",
  "carbon_value": 12.5,
  "cycle": "2025-Q3",
  "digest": "sha3-512:...",
  "physical_id": "seal:XYZ123",
  "attestation": {
    "atf_digest": "sha3-512:...",
    "signer": "did:atf:ai:..."
  },
  "status": "issued|audited|retired",
  "evidence": "cid:Qm..."
}
```

### Smart Contract Interface

Contracts implementing this standard MUST support the following interface:

```solidity
pragma solidity ^0.8.0;

interface IERC8040 {
    struct Metadata {
        string standard;
        string category;
        string geo;
        uint256 carbon_value;
        string cycle;
        bytes32 digest;
        string physical_id;
        Attestation attestation;
        string status;
        string evidence;
    }
    struct Attestation {
        bytes32 atf_digest;
        string signer;
    }

    function mintESGToken(Metadata memory metadata) external returns (uint256 tokenId);
    function auditESGToken(uint256 tokenId, bytes32 auditDigest) external;
    function retireESGToken(uint256 tokenId, string memory reason) external;
    function esgURI(uint256 tokenId) external view returns (string memory);
    function getMetadata(uint256 tokenId) external view returns (Metadata memory);

    event Minted(uint256 indexed tokenId, string category, string geo);
    event Attested(uint256 indexed tokenId, bytes32 atfDigest, string esgURI);
    event Retired(uint256 indexed tokenId, uint256 timestamp, string reason);
}
```

### Events

```solidity
event Minted(uint256 indexed tokenId, string category, string geo);
event Attested(uint256 indexed tokenId, bytes32 atfDigest, string esgURI);
event Retired(uint256 indexed tokenId, uint256 timestamp, string reason);
```

### JSON-RPC Example

```json
{
  "method": "eth_call",
  "params": [
    {
      "to": "0xContractAddress",
      "data": "0x..."
    }
  ],
  "example_metadata": {
    "category": "carbon",
    "geo": "BR-RS",
    "carbon_value": 12.5,
    "digest": "sha3-512:abc123def456..."
  }
}
```

### Mapping & Compatibility

- **[ERC-20](https://eips.ethereum.org/EIPS/eip-20)**: Each unit represents a standardized fraction (e.g., 1e18 = 1 tCO2e).
- **[ERC-721](https://eips.ethereum.org/EIPS/eip-721)**: Single credit with unique esgURI and immutable metadata.
- **[ERC-1155](https://eips.ethereum.org/EIPS/eip-1155)**: Homogeneous batch with common URI, metadata, and fungible amounts.

## Rationale

- Deterministic flows: Lifecycle follows strict state transitions (issued → audited → retired).
- Immutable metadata: SHA3-512 digest ensures tamper-proof records.
- Machine-verifiable audit trails: ATF-AI validates compliance deterministically.
- Post-quantum readiness: Hash functions support quantum-resistant cryptography.

## Security Considerations

1. Metadata immutability: All metadata fields MUST be cryptographically sealed after minting.
2. Zero-trust validation: ATF-AI provides deterministic validation; all attestations are timestamped.
3. Digest integrity: SHA3-512 ensures audit-trail integrity.
4. Post-quantum cryptography: Hash functions and signature schemes MUST be quantum-resistant.
5. Irreversible retirement: Once retired, tokens cannot be reactivated.
6. Physical seal validation: On-chain digest MUST match physical seal cryptographic hash.
7. Input validation: All off-chain documents MUST be hashed and publicly referenced on-chain.

## Copyright

Copyright and related rights waived via CC0-1.0.

This pull request was created as a result of the following prompt from Copilot chat.

Corrigir o arquivo de proposta ERC para que o build do repositório ethereum/ERCs passe no validador automático, conforme os erros reportados: 1. O nome do arquivo deve ser eip-8040.md, refletindo o header 'eip: 8040'. 2. Todas as menções a ERC-20, ERC-721, ERC-1155 devem ser links para o padrão correspondente. Todos os outros requisitos como preâmbulo, seções obrigatórias, discussion-to válido e description já estão atendidos. Substituir o arquivo ERCS/eip-8040.md pelo conteúdo abaixo, garantindo que os links estejam corretos e o nome do arquivo seja eip-8040.md. Este PR resolve todos os erros do validador e torna o ERC apto a ser aceito.

Arquivo corrigido:

---
eip: 8040
title: ESG Tokenization Protocol
description: ESG-compliant, AI-native asset tokenization with quantum auditability and lifecycle integrity.
author: Leandro Lemos (@agronetlabs) <[email protected]>
discussions-to: https://ethereum-magicians.org/t/erc-8040-esg-tokenization-protocol/25846
status: Draft
type: Standards Track
category: ERC
created: 2025-09-06
requires: 20, 721, 1155
---

## Abstract

This ERC defines an AI-native protocol for ESG-compliant asset tokenization, with quantum auditability, compliance-grade metadata, and lifecycle integrity.

## Specification

### Metadata Structure

Tokens MUST expose a metadata JSON with the following minimum fields:

```json
{
  "standard": "ERC-ESG/1.0",
  "category": "carbon",
  "geo": "BR-RS",
  "carbon_value": 12.5,
  "cycle": "2025-Q3",
  "digest": "sha3-512:...",
  "physical_id": "seal:XYZ123",
  "attestation": {
    "atf_digest": "sha3-512:...",
    "signer": "did:atf:ai:..."
  },
  "status": "issued|audited|retired",
  "evidence": "cid:Qm..."
}
```

### Smart Contract Interface

Contracts implementing this standard MUST support the following interface:

```solidity
pragma solidity ^0.8.0;

interface IERC8040 {
    struct Metadata {
        string standard;
        string category;
        string geo;
        uint256 carbon_value;
        string cycle;
        bytes32 digest;
        string physical_id;
        Attestation attestation;
        string status;
        string evidence;
    }
    struct Attestation {
        bytes32 atf_digest;
        string signer;
    }

    function mintESGToken(Metadata memory metadata) external returns (uint256 tokenId);
    function auditESGToken(uint256 tokenId, bytes32 auditDigest) external;
    function retireESGToken(uint256 tokenId, string memory reason) external;
    function esgURI(uint256 tokenId) external view returns (string memory);
    function getMetadata(uint256 tokenId) external view returns (Metadata memory);

    event Minted(uint256 indexed tokenId, string category, string geo);
    event Attested(uint256 indexed tokenId, bytes32 atfDigest, string esgURI);
    event Retired(uint256 indexed tokenId, uint256 timestamp, string reason);
}
```

### Events

```solidity
event Minted(uint256 indexed tokenId, string category, string geo);
event Attested(uint256 indexed tokenId, bytes32 atfDigest, string esgURI);
event Retired(uint256 indexed tokenId, uint256 timestamp, string reason);
```

### JSON-RPC Example

```json
{
  "method": "eth_call",
  "params": [
    {
      "to": "0xContractAddress",
      "data": "0x..."
    }
  ],
  "example_metadata": {
    "category": "carbon",
    "geo": "BR-RS",
    "carbon_value": 12.5,
    "digest": "sha3-512:abc123def456..."
  }
}
```

### Mapping & Compatibility

- **[ERC-20](https://eips.ethereum.org/EIPS/eip-20)**: Each unit represents a standardized fraction (e.g., 1e18 = 1 tCO2e).
- **[ERC-721](https://eips.ethereum.org/EIPS/eip-721)**: Single credit with unique esgURI and immutable metadata.
- **[ERC-1155](https://eips.ethereum.org/EIPS/eip-1155)**: Homogeneous batch with common URI, metadata, and fungible amounts.

## Rationale

- Deterministic flows: Lifecycle follows strict state transitions (issued → audited → retired).
- Immutable metadata: SHA3-512 digest ensures tamper-proof records.
- Machine-verifiable audit trails: ATF-AI validates compliance deterministically.
- Post-quantum readiness: Hash functions support quantum-resistant cryptography.

## Security Considerations

1. Metadata immutability: All metadata fields MUST be cryptographically sealed after minting.
2. Zero-trust validation: ATF-AI provides deterministic validation; all attestations are timestamped.
3. Digest integrity: SHA3-512 ensures audit-trail integrity.
4. Post-quantum cryptography: Hash functions and signature schemes MUST be quantum-resistant.
5. Irreversible retirement: Once retired, tokens cannot be reactivated.
6. Physical seal validation: On-chain digest MUST match physical seal cryptographic hash.
7. Input validation: All off-chain documents MUST be hashed and publicly referenced on-chain.

## Copyright

Copyright and related rights waived via CC0-1.0.

---

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