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FBTC

Bug bounty on Immunefi fbtc.com

Accepting reports KYC to get paid Asset Management web3
Go to program Website
Top reward
$100,000
Top severity paid
Critical
Assets in scope
12
Public CVEs
0
Last change

At a glance

What to know before you start testing.

Pays up to $100,000
for critical bugs, from $1,000.
Report on Immunefi
Submit through the program page.
Paid by USDC, USDT
Proof of identity needed to get paid.
Publish after a fix
Coordinate the timing with the company.

Rewards

What Immunefi lists as the payout for each severity.

Severity Reward
Critical $100,000 10% of funds at risk · from $20,000
High $25,000 from $10,000
Medium $2,500
Low $1,000

Scope

12 assets you may test.

Smart contracts 12

  • https://arbiscan.io/address/0x0d771823c72CcCa4D74695934d5a346938914547
  • https://basescan.org/address/0x26D4a08Ed364Cf07142127aeC202Df910aB33455
  • https://bscscan.com/address/0x0Ed3bb37CD17d17bD18dB0D36558D57520D76292#code
  • https://bscscan.com/address/0x84cFc251F9cC8B2cf9cc1D6EaB3D2bEAA2C128F5
  • https://etherscan.io/address/0x722b9348712418469DD6bb6c92C2560072537584
  • https://explorer.gobob.xyz/address/0xdDf20C1A73A2bCa6ad4D877EFe7c9029Ff82a37B
  • https://explorer.mantle.xyz/address/0x09e4c43eD89E5972df026d94FdA3a7680637c59A
  • https://explorer.mantle.xyz/address/0x4697F9b54Bf24776b81f42A5E2Da81FBA3763bA4?tab=contract
  • https://explorer.mantle.xyz/address/0x80b534D4bB3D809FbDA809DCB26D3f220634AED7
  • https://explorer.mantle.xyz/address/0xbee335BB44e75C4794a0b9B54E8027b111395943
  • https://explorer.mantle.xyz/address/0xC96dE26018A54D51c097160568752c4E3BD6C364
  • https://explorer.mantle.xyz/address/0xd12D39E682715a40dbC860fa07F02bF48841294e

Rules

What the policy asks of you, and the bug types it won't reward, quoted from FBTC (via Immunefi)'s policy. "We" in these lines means the program, not this site.

While testing

  • 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
  • Proof of concept is always required for all severities.

Not accepted

  • Any unfixed vulnerabilities mentioned in these reports are not eligible for a reward.

Summarised with AI from the program policy on Immunefi, and checked word for word against it. Read the original

Changes

Tracked since 11 Nov 2026. Last checked 48 minutes ago.

No changes yet. When the rewards or scope move, you will see it here and in the RSS feed.

Before we tracked it

Scope and reward changes recorded before this page started tracking it.

  1. Scope removed

    https://basescan.org/address/0x84cFc251F9cC8B2cf9cc1D6EaB3D2bEAA2C128F5

  2. Scope removed

    https://basescan.org/address/0xc96de26018a54d51c097160568752c4e3bd6c364

  3. Scope removed

    https://arbiscan.io/address/0xbee335BB44e75C4794a0b9B54E8027b111395943#code

  4. Scope removed

    https://basescan.org/address/0xbee335bb44e75c4794a0b9b54e8027b111395943

  5. Scope removed

    https://etherscan.io/address/0xC96dE26018A54D51c097160568752c4E3BD6C364

  6. Scope removed

    https://arbiscan.io/address/0x80b534D4bB3D809FbDA809DCB26D3f220634AED7

  7. Scope removed

    https://etherscan.io/address/0x09e4c43eD89E5972df026d94FdA3a7680637c59A

  8. Scope removed

    https://etherscan.io/address/0x722b9348712418469DD6bb6c92C2560072537584

  9. Scope removed

    https://basescan.org/address/0x26D4a08Ed364Cf07142127aeC202Df910aB33455

  10. Scope removed

    https://arbiscan.io/address/0xC96dE26018A54D51c097160568752c4E3BD6C364

  11. Scope removed

    https://bscscan.com/address/0x84cFc251F9cC8B2cf9cc1D6EaB3D2bEAA2C128F5

  12. Scope removed

    https://etherscan.io/address/0x80b534D4bB3D809FbDA809DCB26D3f220634AED7

  13. Scope removed

    https://bscscan.com/address/0x09e4c43eD89E5972df026d94FdA3a7680637c59A

  14. Scope removed

    https://basescan.org/address/0x0d771823c72ccca4d74695934d5a346938914547

  15. Scope removed

    https://etherscan.io/address/0xd12D39E682715a40dbC860fa07F02bF48841294e

  16. Scope removed

    https://bscscan.com/address/0x0Ed3bb37CD17d17bD18dB0D36558D57520D76292#code

  17. Scope removed

    https://arbiscan.io/address/0x84cFc251F9cC8B2cf9cc1D6EaB3D2bEAA2C128F5

  18. Scope removed

    https://bscscan.com/address/0x80b534D4bB3D809FbDA809DCB26D3f220634AED7

  19. Scope removed

    https://arbiscan.io/address/0x0Ed3bb37CD17d17bD18dB0D36558D57520D76292#code

  20. Scope removed

    https://bscscan.com/address/0xbee335BB44e75C4794a0b9B54E8027b111395943

  21. Scope removed

    https://bscscan.com/address/0xC96dE26018A54D51c097160568752c4E3BD6C364

  22. Scope removed

    https://arbiscan.io/address/0x0d771823c72CcCa4D74695934d5a346938914547

  23. Scope removed

    https://etherscan.io/address/0xbee335BB44e75C4794a0b9B54E8027b111395943

  24. Scope removed

    https://basescan.org/address/0x80b534d4bb3d809fbda809dcb26d3f220634aed7

Public CVEs

Published vulnerabilities in this vendor's products, from the NVD.

Search NVD

No CVEs matched yet. We match NVD records by vendor name, so products sold under another name can be missing.

Original policy

Copied from immunefi.com on 12 Nov 2026. The summaries on this page are made from it; the live page may have changed since.

Back to Explore FBTC | FBTC is a decentralized protocol that enables the seamless transfer and management of Bitcoin (BTC) across various blockchain networks. By leveraging advanced cryptographic techniques and decentralized governance, FBTC ensures the security, efficiency, and interoperability of BTC assets within the broader blockchain ecosystem. Asset Management Maximum Bounty $100,000 Live Since 19 December 2024 Last Updated 24 January 2025 PoC Required KYC required Arbitration enabled Submit a Bug Information Scope Resources Rewards FBTC provides rewards in USDC/USDT on ETH , denominated in USD. Rewards by Threat Level Smart Contract Critical Max: $100,000 Min: $20,000 Primacy of Rules High Max: $25,000 Min: $10,000 Primacy of Rules Medium Flat: $2,500 Primacy of Rules Low Flat: $1,000 Primacy of Rules Critical Reward Calculation Mainnet assets: Reward amount is 10 % of the funds directly affected up to a maximum of: $100,000 Minimum reward to discourage security researchers from withholding a bug report: $20,000 Rewards Body Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System V2.3 . Reward Calculation for Critical Level Reports For critical smart contract bugs, the reward amount is 10% of the funds directly affected up to a maximum of USD 100 000. The calculation of the amount of funds at risk is based on the time and date the bug report is submitted. However, a minimum reward of USD 20 000 is to be rewarded in order to incentivize security researchers against withholding a critical bug report. Repeatable Attack Limitations If the smart contract where the vulnerability exists can be upgraded or paused, only the initial attack is eligible for a reward. This is because the project can mitigate the risk of further exploitation by upgrading or pausing the component where the vulnerability exists. The reward amount will depend on the severity of the impact and the funds at risk. For critical repeatable attacks on smart contracts that cannot be upgraded or paused, the project will consider the cumulative impact of the repeatable attacks for a reward. This is because the project cannot prevent the attacker from repeatedly exploiting the vulnerability until all funds are drained and/or other irreversible damage is done. Therefore, this warrants a reward equivalent to 10% of funds at risk, capped at the maximum critical reward. Reward Calculation for High Level Reports High vulnerabilities concerning theft/permanent freezing of unclaimed yield/royalties are rewarded within a range of USD 10 000 to USD 25 000 depending on the funds at risk, capped at USD 25 000. In the event of temporary freezing, the reward doubles from the full frozen value for every additional [24h] that the funds are temporarily frozen, up to the maximum high reward cap of USD 25 000. This is because as the duration of the freezing lengthens, the potential for greater damage and subsequent reputational harm intensifies. Thus, by increasing the reward proportionally with the frozen duration, the project ensures stronger incentives for bug disclosure of this nature. View impacts in scope Program Overview FBTC is a decentralized protocol that enables the seamless transfer and management of Bitcoin (BTC) across various blockchain networks. By leveraging advanced cryptographic techniques and decentralized governance, FBTC ensures the security, efficiency, and interoperability of BTC assets within the broader blockchain ecosystem. For more information about FBTC, please visit https://fbtc.com/ FBTC provides rewards in USDC/USDT on Ethereum, denominated in USD. For more details about the payment process, please view the Rewards by Threat Level section further below. FBTC’s completed audit reports can be found at https://github.com/fbtc-xyz/fbtc-contract/tree/main/audits . Any unfixed vulnerabilities mentioned in these reports are not eligible for a reward. Audits Auditor Link Completed at All Audits │ https://github.com/fbtc-xyz/fbtc-contract/tree/main/audits │ 20 December 2024 Auditor All Audits Link https://github.com/fbtc-xyz/fbtc-contract/tree/main/audits Completed at 20 December 2024 KYC required The submission of KYC information is a requirement for payout processing. Participants must adhere to the Eligibility Criteria. Proof of Concept Proof of concept is always required for all severities. Responsible Publication Category 3: Approval Required 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. Chain Rollbacks Pre-Impact Bug Monitoring Attack Investment Amount Attacks With A Financial Risk To The Attacker When Is An Impactful Attack Downgraded To Griefing? Submit a Bug Total Assets in Scope 36