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Guide

How to use Carbonhood

Five minutes end to end — from adding the network to verifying a retirement certificate against a block.

About 5 minutes5 stepsSteps 2 and 3 need no wallet

How the pipeline works

Two things run in parallel when you use Carbonhood: what you do actively, and what the contracts do automatically every time a trade happens.

You
  1. Buy or sell HOOD on pons — each trade generates a 1% pool fee
  2. Calculate your carbon footprint — four questions, about a minute
  3. Watch the dashboard update with every retirement the treasury makes
Auto
  1. 70% of every fee routes to CarbonTreasury — not a team wallet
  2. Relayer monitors the balance and fires when it crosses 0.05 WETH
  3. Carbonmark API picks the cheapest verified listing and retires the credits
  4. Certificate hash anchored on Robinhood Chain — auditable forever
Example — $10,000 trade: Pons takes $100 fee. $70 goes to CarbonTreasury. Once the threshold is crossed, the relayer buys ~2.3 t of carbon via Carbonmark (at ~$30/t), retires it on Verra, and anchors the certificate hash on-chain. Dashboard map pin appears automatically.
  1. Step 1

    Add Robinhood Chain to your wallet

    Robinhood Chain is an Arbitrum L2 with ETH for gas. Any EVM wallet works — add it manually with these details.

    If the RPC fails to connect, your ISP may be blocking the domain. An Alchemy endpoint for the same chain works as an alternative.

  2. Step 2

    Calculate your footprint

    Four questions — transport, home energy, diet, flights. The result shows your annual tonnes of CO₂e and, more usefully, the exact trade volume needed to offset it.

    The maths is public: retiring one tonne costs roughly the market carbon price, and the treasury captures 0.7% of every trade. Divide one by the other and you get the volume figure. No hidden multiplier.

    Open the calculator
  3. Step 3

    Read the treasury dashboard

    The dashboard separates two numbers that are usually blurred together.

    • Credits retired — registry-verified credits actually bought and retired by the treasury. Each row links to its certificate and its on-chain attestation.
    • Plantation baseline — a modelled estimate of what the agroforestry plot sequesters. Useful context, but it is not a verified credit and is never folded into the retirement figure.
  4. Step 4

    Verify a retirement yourself

    Every claim on the dashboard is checkable without trusting us.

    1. 1Open any row in the retirement log and click On-chain.
    2. 2The transaction calls attestRetirement on the treasury with the certificate hash, tonnage, and registry serial.
    3. 3Hash the certificate payload yourself and compare it to the on-chain value. If they match, the certificate existed at that block and has not been edited since.
  5. Step 5

    Buy HOOD on pons

    Trading happens in the token's locked Uniswap V3 pool on pons. Liquidity is locked at launch and the 70% creator share of every fee goes to the treasury contract, not a team wallet.

    Check the address first. Names and symbols can be copied by anyone — verify the token address before trading.

    Pool fee
    1%
    Quote token
    WETH

Start with your own number

The calculator takes about a minute and needs no wallet.

Calculate my footprint