Now
Season 0
c0 Testnet is live: faucet, carbon registry, MRV oracle, c0scan explorer and retirement certificates.
True Carbon
The carbon ledger testnet. Record, verify and retire every tonne of CO2e in public, on c0.
Chain 49198 · block syncing
Why a carbon ledger
The concept of true carbon is simple. A tonne removed is recorded once, verified in the open and retired for good. Today that story is scattered across PDFs and private databases, where one tonne can be sold twice and a missing report goes unnoticed. c0 puts every step on a public ledger: who measured it, which evidence backs it, when it was retired and for whom. Nothing to trust, everything to check.
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How it works
Follow the river.
Five moves from an empty wallet to a retired tonne. Everything happens on c0 Testnet, in public, with transactions you sign yourself.
Connect
Add c0 Testnet to MetaMask or any EVM wallet in one click. Your wallet signs, nobody holds your keys.
Add network
- Network
- c0 Testnet
- Chain ID
- 49198
- Gas token
- tC0
- RPC
- c0scan.xyz/rpc
Fuel up
Claim test gas from the faucet once a day. tC0 exists only on the testnet and has no market value.
0.5 tC0
every 24 hours per address
Covers thousands of transactions at a 1 gwei base fee.
Record
Log a footprint or submit a removal from your project. Evidence files are hashed in your browser and only the hash goes on-chain.
Verify
The MRV oracle checks plausibility caps and duplicate evidence, then settles each decision as a signed transaction anyone can audit.
Retire
Burn tCO2e against your footprint and receive a permanent public certificate. Retired means gone.
Scan every tonne.
Every project on c0 is a pin on the ledger. Green is verified, amber waits for the MRV oracle, red was rejected.
Wetlands, on the record.
Mangroves in the Niger Delta and peatland in the Congo Basin: demo projects registered at genesis, each issuance traceable to its evidence hash.
From Patagonia to your wallet.
Credits flow from verified records into wallets and the credit pool, and end their life in a public retirement.
- Blocks
- ...
- Transactions
- ...
- Tonnes verified
- ...
- Tonnes retired
- ...
Add c0 to your wallet.
One click in MetaMask, Rabby or any EVM wallet. Prefer to type it in? Every parameter is below.
- Network name
- c0 Testnet
- RPC URL
- https://c0scan.xyz/rpc
- Chain ID
- 49198
- Currency symbol
- tC0
- Block explorer
- https://c0scan.xyz
- tCO2e token
- 0xc02E000000000000000000000000000000000002
- Carbon registry
- 0xC02E000000000000000000000000000000000001
Faucet
Paste any address or connect your wallet. The faucet signs a real transaction you can follow on c0scan.
$C0, on Robinhood Chain.
The community token of c0 launches on pons, the Robinhood Chain launchpad. The testnet stays free to use, with or without it.
Get $C0
Planned
- Vote on activity factors and oracle rules
- Stake to run an MRV verifier
- Pay registry fees on mainnet
Roadmap items, subject to change.
tC0 and tCO2e are testnet assets with no value and cannot be bridged. $C0 is a separate token on Robinhood Chain. Nothing on this site is financial advice. Token names are not unique: always verify the contract address.
The road ahead.
A testnet first, a token second, real measurements last. Each phase ships when it is ready, not on a countdown.
Next
$C0 launch
The community token goes live on Robinhood Chain through pons. The contract address is published here first.
Later
Registry v1
A methodology library with community-reviewed factors, verifier staking and guided project onboarding.
Later
Mainnet
A production chain bridged to Robinhood Chain, with MRV partners feeding measured data instead of demos.
Season 0, in pictures.
Updates, launch notes and the occasional gm from the ledger.
