# Regen Network Credits

### What you’re actually buying

Some credits in Klima are **REGEN NETWORK credits mirrored to Base**:

* **Regen Network is the registry of record** for these credits.
* On Base, you interact with an **ERC-20 representation** of those credits.
* The ERC-20 exists so trading and retirement can happen with **fast settlement** on Base, while the underlying credit provenance remains anchored to Regen.

{% hint style="success" %}
**Key point:** Base activity is real and verifiable on-chain, but the **canonical registry retirement** is executed on REGEN on a **periodic sync schedule**.
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### How the mirroring model works

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### Escrow on Regen Network (backing)

Regen Network sets aside a specific quantity of underlying credits in a dedicated account to ensure that they can not be consumed or transferred for any other reason. This account is public and transparent, making it easy to verify.
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### 1:1 issuance on Base (representation)

Carbonmark mints an ERC-20 token on Base that represents those escrowed Regen Network credits **1:1**.
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### Supply into Klima Carbon Classes

Holders of the Base ERC-20 tokens can choose to sell them to the Klima Protocol.
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### Retirement on Base + periodic sync to Regen Network

When you retire on Base:

* The Base token is retired on-chain (the token is removed from circulation and a retirement event is emitted).
* Regen Network later executes the matching retirement on Regen Network during the next sync cycle.
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### What happens when you retire

#### Immediately (Base)

Your retirement produces:

* An on-chain retirement transaction on Base (timestamped, verifiable).
* A retirement receipt reflecting the Base retirement details (quantity, token, transaction reference).

#### Later (Regen Network)

Regen Network performs reconciliation on a schedule:

* Base retirements are aggregated per token since the last checkpoint.
* Equivalent underlying credits are retired on Regen Network.
* Reconciliation records are maintained to map Base totals → Regen Network retirement actions.

### Timing expectations

* **Contractual minimum:** Regen Network syncs **at least monthly**
* **Operational target:** **weekly** when feasible

If you have an internal reporting deadline (audit, client delivery, compliance memo), plan around the **monthly minimum** unless you have explicit confirmation a weekly sync has occurred.

### What your retirement receipt proves

#### Your receipt is evidence of:

* A completed retirement of the **mirrored token on Base**
* On-chain proof: transaction hash, timestamp, quantity, and token identity on Base
* A committed operational process to retire the equivalent credits on Regen Network during the next sync window

#### Your receipt is not immediate evidence of"

* A per-transaction Regen Network retirement entry at the moment you retire on Base
* A registry retirement ID that is instantly available and linkable from the receipt

### How double counting is prevented

This model is designed to prevent the same underlying credits from being sold/retired through multiple paths:

* **1:1 backing:** mirrored tokens minted on Base must be backed by escrowed Regen Network credits.
* **Dedicated escrow accounts:** underlying credits used for mirroring are set aside specifically for this integration.
* **Base retirements drive required Regen Network retirements:** the Base retirement totals define what must be retired on Regen Network in reconciliation.
* **Exception handling:** if an invariant is violated (e.g., minted > escrowed), sales/retirements may be paused while the discrepancy is resolved.

### How to verify a retirement

When you need “proof” quickly, here’s what you can provide right away:

1. **Base transaction reference**
   * The retirement transaction hash and timestamp (Base).
2. **Asset identity**
   * The ERC-20 token contract address on Base.
   * The token symbol and batch/vintage labeling used in Klima.
3. **Quantity and unit**
   * Retired amount in **tCO₂e** (always include units).
4. **Registry framing**
   * A one-line statement that Regen Network is the registry of record and registry retirement occurs on a periodic sync cycle.

If your counterpart requires the registry entry, provide the Base proof immediately and follow up after the next sync window with the Regen Network-side retirement reference.

### Supported Regen Network credit types

During launch, only specific Regen Network batches are included.

**Token naming convention**\
`REGEN-{category_id}{project_id}-{vintage_end}`

* `C02` is a category ID and is included.
* Vintage shown is the **end** of the serial range.

| Project                               | Regen Network project ID | Regen Network serial / range  | Token format        |
| ------------------------------------- | ------------------------ | ----------------------------- | ------------------- |
| Buena Vista Heights Conservation Area | C02-003                  | C02-003-20200630-20220629-001 | `REGEN-C02003-2022` |
| Harvey Manning Park Expansion         | C02-004                  | C02-004-20210102-20211207-001 | `REGEN-C02004-2021` |
| St. Elmo Preservation Project         | C02-006                  | C02-006-20210216-20210215-001 | `REGEN-C02006-2022` |

### Glossary

* **Mirrored credit (Base):** ERC-20 representation of an escrowed Regen Network credit.
* **Registry of record:** The authoritative registry where the underlying credit exists and is ultimately retired (Regen Network).
* **Retirement (Base):** On-chain retirement of the mirrored token on Base (verifiable immediately).
* **Retirement (Regen Network):** Canonical registry retirement performed on Regen Network during reconciliation.
* **Reconciliation / sync:** The periodic process mapping Base retirements → Regen Network retirements.

### FAQ

<details>

<summary>“Why doesn’t the registry retirement appear immediately?”</summary>

Because this POC uses **periodic reconciliation** rather than per-transaction registry retirement.

</details>

<details>

<summary>“Is my retirement still valid?”</summary>

Your Base retirement is valid and verifiable immediately. The Regen Network retirement is the registry follow-through executed during the next sync window.

</details>

<details>

<summary>“What if I need my Regen certificate quickly?”</summary>

Assume sync happens in minimum 1-month intervals. We can not provide any hard guarantees for sync time. However, your Carbonmark certificate serves as a guarantee that the credit was consumed and that you've already claimed the environmental benefit.

</details>


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