CarbonLedger

STELLAR · SOROBAN · RWA

Carbon credits
that can't lie.

Every tonne verified on-chain. Every retirement permanent and irreversible. Full audit trail from issuance to retirement — readable by anyone, anywhere, without a wallet.

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Built on Stellar

TOTAL CREDITS ISSUED

0

TOTAL RETIRED

0

ACTIVE PROJECTS

0

CO₂ OFFSET (tCO₂e)

0

The reality

The carbon market is broken.

Fraud

Forested carbon claims with no verification mechanism.

Double-counting

The same tonne sold to multiple buyers, off-ledger.

Opacity

No way to verify what you actually bought after the invoice.

Greenwashing

Retired credits with no proof, no certificate, no trail.

CarbonLedger makes all of this mathematically impossible.

The solution

Three primitives. Zero greenwashing.

Every credit gets a unique serial number

Double counting is mathematically impossible. Serial ranges are assigned at mint time and enforced globally across all batches in the smart contract.

verify_serial_range()

Retirement is permanently irreversible

Once retired on-chain, credits cannot be transferred, sold, or un-retired. Ever. The smart contract has no undo path — retirement is a one-way door.

retire_credits()

Anyone can verify everything

Every credit's full history — from project registration to satellite monitoring to purchase to retirement — is readable by anyone, without a wallet.

GET /audit/:serial

How it works

From forest to certificate in 4 steps.

1

STEP 01

REGISTER

Project developer submits coordinates + methodology.

register_project()

2

STEP 02

VERIFY

Accredited verifier reviews & approves on-chain. Oracle begins monitoring.

verify_project()

3

STEP 03

MINT

Admin mints credits with unique serial numbers. Credits live in wallets.

mint_credits()

Lives on Stellar
4

STEP 04

RETIRE

Corporation retires on-chain, certificate issued permanently.

retire_credits()

For corporations

Turn ESG commitments into on-chain proof.

  • Permanent retirement certificates your auditors can verify independently.
  • Serial number range proves exactly which tonnes you offset.
  • Public URL for every certificate — share it in your annual report.
Start Offsetting Corporate Dashboard
CarbonLedger
VERIFIED

Carbon Retirement Certificate

This certifies that

Dangote Industries Ltd

has permanently retired

500 tCO₂e

Project

Kaduna Forest Conservation

Methodology

VCS

Vintage

2023

Serial

100,001 – 100,500

Retired

2025-01-08 14:32 UTC

Reason

2024 Annual Carbon Offset

Certificate ID

CERT-9af3c2b1

tx: Cf3a91b8de4c7
Built on Stellar

Live activity

The ledger never sleeps.

carbon-ledger ~ tail -f activity.log
> [12:34:07] 500 VCS credits MINTED — Kaduna Forest Project #KD-2023
> [12:33:24] 200 credits PURCHASED — Dangote Industries Ltd → listing #0042
> [12:32:41] 150 credits RETIRED — Beneficiary: NNPCL — cert #9af3c2b1
> [12:31:58] 1,000 VCS credits LISTED — $18.50 USDC/tonne
> [12:30:15] 800 credits RETIRED — Beneficiary: Zenith Bank — cert #12af90c4
> [12:29:32] VERIFY: Cross River Rainforest oracle update — satellite OK
> [12:28:49] 2,400 credits MINTED — Niger Delta Mangroves #NDM-2024
> [12:27:06] PROJECT REGISTERED — Mount Cameroon Reforestation (PENDING)
> [12:34:08] ▌

Ready to make your carbon commitments verifiable?

Join the projects, verifiers and corporations building a carbon market that can't lie.

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