Toucan-logo

Toucan

Toucan is building technology to finance climate action at scale. They are developing infrastructure to move carbon credits onto open blockchains, which helps make carbon markets more transparent, efficient, accessible, and scalable.

Polygon
Defi
Solidity
Maximum Bounty
$200,000
Live Since
03 November 2022
Last Updated
08 April 2024
  • PoC required

Submit a Bug

Rewards by Threat Level

Smart Contract
Critical
USD $50,000 to USD $200,000
High
USD $40,000
Medium
USD $7,500

Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System V2.2. This is a simplified 5-level scale, with separate scales for websites/apps, smart contracts, and blockchains/DLTs, focusing on the impact of the vulnerability reported.

All bug reports must come with a PoC with an end-effect impacting an asset-in-scope in order to be considered for a reward. Explanations and statements are not accepted as PoC and code is required.

Rewards for critical smart contract vulnerabilities are further capped at 10% of economic damage, with the main consideration being the funds affected in addition to PR and brand considerations, at the discretion of the team. However, there is a minimum reward of USD 50 000 and a maximum reward of USD 200 000.

Known issues highlighted in the following audit reports are considered out of scope:

Payouts are handled by the Toucan team directly and are denominated in USD. However, payouts are done in USDC (ERC20). All payouts require invoice with email and crypto wallet address.

Program Overview

Toucan is building technology to finance climate action at scale. They are developing infrastructure to move carbon credits onto open blockchains, which helps make carbon markets more transparent, efficient, accessible, and scalable.

Toucans infrastructure is composed of four key modules:

  1. The Carbon Bridge verifiably 1:1 tokenizes carbon credits from a supported registry and turns them into ERC-20 tokens that anyone can use. More than 20m carbon credits (or around 85 % of all on-chain carbon credits) have been tokenized using Toucans bridge
  2. Their Carbon Pools are a way of grouping together tokens linked to credits with similar attributes. The result: standardized and deeply liquid carbon reference tokens (like NCT) that can be easily priced and traded on cryptocurrency exchanges.
  3. Information about all tokenized carbon credits is stored on Toucans Open Carbon Registry. This is a unified global ledger with consistent data standards to be used across organizations. On the Open Carbon Registry, everyone can view the project information, trading history and retirement details of all tokenized carbon credits. The Open Carbon Registry brings much-needed transparency into a previously opaque market.
  4. The retirement module helps companies retire carbon credits with the full transparency of a public blockchain.

For more information about Toucan, please visit https://toucan.earth/.

KYC not required

No KYC information is required for payout processing.

Prohibited Activities

Default prohibited activities
  • Any testing on mainnet or public testnet deployed code; all testing should be done on local-forks of either public testnet or mainnet
  • Any testing with pricing oracles or third-party smart contracts
  • Attempting phishing or other social engineering attacks against our employees and/or customers
  • Any testing with third-party systems and applications (e.g. browser extensions) as well as websites (e.g. SSO providers, advertising networks)
  • Any denial of service attacks that are executed against project assets
  • Automated testing of services that generates significant amounts of traffic
  • Public disclosure of an unpatched vulnerability in an embargoed bounty
  • Any other actions prohibited by the Immunefi Rules

Feasibility Limitations

The project may be receiving reports that are valid (the bug and attack vector are real) and cite assets and impacts that are in scope, but there may be obstacles or barriers to executing the attack in the real world. In other words, there is a question about how feasible the attack really is. Conversely, there may also be mitigation measures that projects can take to prevent the impact of the bug, which are not feasible or would require unconventional action and hence, should not be used as reasons for downgrading a bug's severity. Therefore, Immunefi has developed a set of feasibility limitation standards which by default states what security researchers, as well as projects, can or cannot cite when reviewing a bug report.