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22 June 2021
Live since
KYC required
Maximum bounty

Program Overview

Tranchess, in simple terms, is a tokenized structured fund protocol. The protocol is inspired by structure fund that caters to investors with different risk appetite.

More information about Tranchess can be found on their website,

This bug bounty program is focused around its smart contracts and is mostly concerned with the prevention of the loss of user funds.

Rewards by Threat Level

Rewards for Smart Contract vulnerabilities are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System. This is a simplified 5-level scale, with separate scales for websites/apps and smart contracts/blockchains, encompassing everything from consequence of exploitation to privilege required to likelihood of a successful exploit.

Vulnerability reports concerning rounding errors with an effect of less than the equivalent of USD 0.01 are not eligible for a reward. Additionally, vulnerability impacts of the Exchange smart contract resulting in “contract consumes unbounded gas”, classified as Medium in the Immunefi Vulnerability Severity Classification System, is not eligible for a reward as it is by design.

Critical vulnerabilities are capped at 10% of economic damage, primarily taking into consideration the funds at risk, but also factoring in PR and branding considerations, at the discretion of the team.
However, there is a minimum reward of USD 50 000.

Payouts are handled by the Tranchess team directly and are denominated in USD. However, payouts are done in USDC.

Smart Contracts and Blockchain

Up to USD $200,000
USD $20,000
USD $5,000
USD $1,000

Assets in Scope

Smart Contract
Smart Contract - TwapOracle
Smart Contract - AprOracle
Smart Contract - Chess
Smart Contract - Chess Schedule
Smart Contract - VotingEscrow
Smart Contract - InterestRateBallot
Smart Contract - TimeLockController
Smart Contract - ProxyAdmin
Smart Contract - Fund
Smart Contract - Token QUEEN
Smart Contract - Token BISHOP
Smart Contract - Token ROOK
Smart Contract - PrimaryMarket
Smart Contract - Exchange

Prioritized Vulnerabilities

We are especially interested in receiving and rewarding vulnerabilities of the following types:

  • Re-entrancy
  • Logic errors
    • including user authentication errors
  • Solidity/EVM details not considered
    • including integer over-/under-flow
    • including unhandled exceptions
  • Trusting trust/dependency vulnerabilities
    • including composability vulnerabilities
  • Oracle failure/manipulation
  • Novel governance attacks
  • Economic/financial attacks
    • including flash loan attacks
  • Congestion and scalability
    • including running out of gas
    • including block stuffing
    • including susceptibility to frontrunning
  • Consensus failures
  • Cryptography problems
    • Signature malleability
    • Susceptibility to replay attacks
    • Weak randomness
    • Weak encryption
  • Susceptibility to block timestamp manipulation
  • Missing access controls / unprotected internal or debugging interfaces

Out of Scope & Rules

The following vulnerabilities are excluded from the rewards for this bug bounty program:

  • Attacks that the reporter has already exploited themselves, leading to damage
  • Attacks requiring access to leaked keys/credentials
  • Attacks requiring access to privileged addresses (governance, strategist)
  • Incorrect data supplied by third party oracles
    • Not to exclude oracle manipulation/flash loan attacks
  • Basic economic governance attacks (e.g. 51% attack)
  • Lack of liquidity
  • Best practice critiques
  • Sybil attacks

The following activities are prohibited by this bug bounty program:

  • Any testing with mainnet or public testnet contracts; all testing should be done on private testnets
  • 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
  • Automated testing of services that generates significant amounts of traffic
  • Public disclosure of an unpatched vulnerability in an embargoed bounty