9vPWcU">6DNSN2BJsaPFdFFc1zP37kkeNe4Usc1Sqkzr9C9vPWcU</a></td></tr><tr><td>SolanaTBTC (Program)</td><td><a href="https://solscan.io/account/Gj93RRt6QB7FjmyokAD5rcMAku7pq3Fk2Aa8y6nNbwsV">Gj93RRt6QB7FjmyokAD5rcMAku7pq3Fk2Aa8y6nNbwsV</a></td></tr><tr><td>SolanaWormholeGateway</td><td><a href="https://solscan.io/account/87MEvHZCXE3ML5rrmh5uX1FbShHmRXXS32xJDGbQ7h5t">87MEvHZCXE3ML5rrmh5uX1FbShHmRXXS32xJDGbQ7h5t</a></td></tr></tbody></table>
### Starknet
| Contract | Address |
| ------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| StarknetTBTC | [0x04daa17763b286d1e59b97c283c0b8c949994c361e426a28f743c67bdfe9a32f](https://voyager.online/contract/0x04daa17763b286d1e59b97c283c0b8c949994c361e426a28f743c67bdfe9a32f) |
| L1 StarkGate Bridge | [0x2111A49ebb717959059693a3698872a0aE9866b9](https://etherscan.io/address/0x2111A49ebb717959059693a3698872a0aE9866b9#tokentxns) |
| L2 StarkGate Bridge | [0x067eb1988556edd7543a3c9ee24cc078be35fd49f0b7f264cc0434aeb6dfb09e](https://voyager.online/contract/0x067eb1988556edd7543a3c9ee24cc078be35fd49f0b7f264cc0434aeb6dfb09e) |
| StarknetBitcoinDepositor | [0xC9031f76006da0BD4bFa9E02aDf0d448dB3BC155](https://etherscan.io/address/0xC9031f76006da0BD4bFa9E02aDf0d448dB3BC155#tokentxns) |
### Sui
| Contract | Address |
| ------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Sui tBTC | [0x77045f1b9f811a7a8fb9ebd085b5b0c55c5cb0d1520ff55f7037f89b5da9f5f1](https://suiscan.xyz/mainnet/coin/0x77045f1b9f811a7a8fb9ebd085b5b0c55c5cb0d1520ff55f7037f89b5da9f5f1::TBTC::TBTC/txs) |
| L1BitcoinDepositor | [0xb810AbD43d8FCFD812d6FEB14fefc236E92a341A](https://etherscan.io/address/0xb810AbD43d8FCFD812d6FEB14fefc236E92a341A) |
| Sui Package ID | [0x77045f1b9f811a7a8fb9ebd085b5b0c55c5cb0d1520ff55f7037f89b5da9f5f1](https://suiscan.xyz/mainnet/coin/0x77045f1b9f811a7a8fb9ebd085b5b0c55c5cb0d1520ff55f7037f89b5da9f5f1::TBTC::TBTC/txs) |
### BOB
<table><thead><tr><th width="343.90625"></th><th></th></tr></thead><tbody><tr><td>BOB tBTC</td><td><a href="https://explorer.gobob.xyz/token/0xBBa2eF945D523C4e2608C9E1214C2Cc64D4fc2e2">0xBBa2eF945D523C4e2608C9E1214C2Cc64D4fc2e2</a></td></tr><tr><td>Standard Bridge on BOB</td><td><a href="https://explorer.gobob.xyz/address/0x4200000000000000000000000000000000000010">0x4200000000000000000000000000000000000010</a></td></tr><tr><td>BurnFromMintTokenPoolUpgradeable</td><td><a href="https://explorer.gobob.xyz/address/0x36Ee23c94523A05981baaEEaea4BA97cDDe21f6a?tab=read_proxy">0x36Ee23c94523A05981baaEEaea4BA97cDDe21f6a</a></td></tr><tr><td>CCIP Router</td><td><a href="mailto:undefined">0x827716e74F769AB7b6bb374A29235d9c2156932C</a></td></tr></tbody></table>
# Sepolia Testnet
## Threshold Contracts
Delivered in `@threshold-network/solidity-contracts@1.3.0-sepolia.0` NPM package.
<table><thead><tr><th width="374.5478238350802">Contract</th><th>Address</th></tr></thead><tbody><tr><td>T Token</td><td><a href="https://sepolia.etherscan.io/address/0x46abDF5aD1726ba700794539C3dB8fE591854729">0x46abDF5aD1726ba700794539C3dB8fE591854729</a></td></tr></tbody></table>
## TBTC Application Contracts
Delivered in `@keep-network/random-beacon@2.1.0-sepolia.1`, `@keep-network/ecdsa@2.1.0-sepolia.1` and `@keep-network/tbtc-v2@1.6.0-sepolia.6` NPM packages.
| Contract | Address |
| ----------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- |
| Bridge | [0x9b1a7fE5a16A15F2f9475C5B231750598b113403](https://sepolia.etherscan.io/address/0x9b1a7fE5a16A15F2f9475C5B231750598b113403#code) |
| RandomBeacon | [0x02CBA6D77CF9fB019e322c55b34c9d42f2eF4D74](https://sepolia.etherscan.io/address/0x02CBA6D77CF9fB019e322c55b34c9d42f2eF4D74) |
| TBTC | [0x517f2982701695D4E52f1ECFBEf3ba31Df470161](https://sepolia.etherscan.io/address/0x517f2982701695D4E52f1ECFBEf3ba31Df470161) |
| TBCTVault | [0xB5679dE944A79732A75CE556191DF11F489448d5](https://sepolia.etherscan.io/address/0xB5679dE944A79732A75CE556191DF11F489448d5) |
| VendingMachine | [0x0b82E51164720543dB3FB13043876F37e9a19A4A](https://sepolia.etherscan.io/address/0x0b82E51164720543dB3FB13043876F37e9a19A4A) |
| WalletRegistry | [0x2DfC89675AB5Fb5Be7c2A86d373Daac3E795fc25](https://sepolia.etherscan.io/address/0x2DfC89675AB5Fb5Be7c2A86d373Daac3E795fc25) |
| WalletProposalValidator | [0x4d7E5B28F018C60Ed662017b381eEd553cfa8Fbe](https://sepolia.etherscan.io/address/0x4d7E5B28F018C60Ed662017b381eEd553cfa8Fbe) |
| LightRelay | [0x998D17122dA4ed98e558198665984E08D1cEAA8d](https://sepolia.etherscan.io/address/0x998D17122dA4ed98e558198665984E08D1cEAA8d) |
| LightRelayMaintainerProxy | [0xA669AC294BCf04CEeB5EBC26d9E1bF4fc4574e06](https://sepolia.etherscan.io/address/0xA669AC294BCf04CEeB5EBC26d9E1bF4fc4574e06) |
| RedemptionWatchtower | [0x4E6CFb556143381070b17825707b3DE7F3148FaC](https://sepolia.etherscan.io/address/0x4E6CFb556143381070b17825707b3DE7F3148FaC) |
| L1BitcoinDepositor (Arbitrum) | [0xD9B523fb879C63b00ef14e48C98f4e3398d3BA2D](https://sepolia.etherscan.io/address/0xD9B523fb879C63b00ef14e48C98f4e3398d3BA2D) |
| L1BitcoinDepositor (Base) | [0x59FAE614867b66421b44D1Ed3461e6B6a4B50106](https://sepolia.etherscan.io/address/0x59FAE614867b66421b44D1Ed3461e6B6a4B50106) |
## L2 tBTC Application Contracts
### Arbitrum Sepolia (chain ID: 421614)
Delivered in `` @keep-network/tbtc-v2-arbitrum@1.1.1-sepolia.0` `` NPM package.
| Contract | Address |
| ----------------------- | ---------------------------------------------------------------------------------------------------------------------------- |
| ArbitrumTBTC | [0xb8f31A249bcb45267d06b9E51252c4793B917Cd0](https://sepolia.arbiscan.io/address/0xb8f31A249bcb45267d06b9E51252c4793B917Cd0) |
| ArbitrumWormholeGateway | [0xc3D46e0266d95215589DE639cC4E93b79f88fc6C](https://sepolia.arbiscan.io/address/0xc3d46e0266d95215589de639cc4e93b79f88fc6c) |
| L2BitcoinDepositor | [0xB2fEC598a9374078Bb639f3d70555fc4389b7a78](https://sepolia.arbiscan.io/address/0xB2fEC598a9374078Bb639f3d70555fc4389b7a78) |
### Optimism Sepolia (chain ID: 11155420)
Delivered in `` @keep-network/tbtc-v2-optimism@1.1.0-sepolia.0` `` NPM package.
| Contract | Address |
| ----------------------- | -------------------------------------------------------------------------------------------------------------------------------------- |
| OptimismTBTC | [0x9A82bE743f0120fA24893b1631B6b2817fD94b1D](https://sepolia-optimism.etherscan.io/address/0x9a82be743f0120fa24893b1631b6b2817fd94b1d) |
| OptimismWormholeGateway | [0x5FB63D9e076a314023F2D1aB5dBFd7045C281EbA](https://sepolia-optimism.etherscan.io/address/0x5FB63D9e076a314023F2D1aB5dBFd7045C281EbA) |
### Base Sepolia (chain ID: 84532)
Delivered in `` @keep-network/tbtc-v2-base@1.1.0-sepolia.0` `` NPM package.
| Contract | Address |
| ------------------- | ----------------------------------------------------------------------------------------------------------------------------- |
| BaseTBTC | [0xb8f31A249bcb45267d06b9E51252c4793B917Cd0](https://sepolia.basescan.org/address/0xb8f31A249bcb45267d06b9E51252c4793B917Cd0) |
| BaseWormholeGateway | [0xc3D46e0266d95215589DE639cC4E93b79f88fc6C](https://sepolia.basescan.org/address/0xc3D46e0266d95215589DE639cC4E93b79f88fc6C) |
| L2BitcoinDepositor | [0xDEbD9aA9BC4845c7Cd2d9a997F82A2Daea540bD5](https://sepolia.basescan.org/address/0xDEbD9aA9BC4845c7Cd2d9a997F82A2Daea540bD5) |
### Starknet Sepolia
| Contract | Address |
| ------------------------ | ------------------------------------------------------------------ |
| StarknetTBTC | 0x05f09ee6e942b869aa159287924156cb9bc4510a447c0cc80a898780434d5c2c |
| L1 StarkGate Bridge | 0xF6217de888fD6E6b2CbFBB2370973BE4c36a152D |
| L2 StarkGate Bridge | 0x01fd5ad689cec587e80a3d380b5b47ff082203e118bdd22b77256ffa379b15d9 |
| StarknetBitcoinDepositor | 0x40c74a5f0b0e6CC3Ae4E8dD2Db46d372504445DA |
# Security Audits
This page documents the various third-party security audits conducted on Threshold Network components, including tBTC bridge, staking contracts, the vending machines, thUSD, and integrations.
## Protocol Upgrades
#### Defense by Thesis - Beta Staker Allowlist & Bridge Fee Rebates
* **Date:** 27 November 2025
* **Report:** [View Audit 1 PDF](https://drive.google.com/file/d/1ymBpfc9vihOVA-XccqhpeitnZS208O5u/view) - [View Audit 2 PDF](https://drive.google.com/file/d/1QK1jnaoqdtoeyqTD7xz93sSk1BwerFwe/view?usp=sharing) 
* **Scope:** Smart contracts for T staking rebates. See related proposals, [TIP-067](https://forum.threshold.network/t/beta-staker-expansion-tip-067-compensation-adjustment/1113) and [TIP-106](https://forum.threshold.network/t/tip-106-experimenting-with-a-tbtc-fee-rebate-for-locking-t-tokens/1146) 
#### **Defense by Thesis - WalletRegistry & EcdsaDkg**
* **Date**: 5 November 2025
* **Report**: [View PDF](https://drive.google.com/file/d/1oQJO-fW4ZUUS_DQovOtaB9CB7U6YT0AP/view?usp=sharing)
* **Scope:** WalletRegistry and EcdsaDkg smart contracts
#### **Defense by Thesis - Gasless Minting Feature for the Threshold App**
* **Date**: 31 Oct 2025
* **Report**: [View PDF](https://drive.google.com/file/d/1RW4Bb3Rd_HdOU8pVxLpIRXCXDYKubeIp/view?usp=sharing)
* **Scope:** NativeBTCDepositor contract
## Cross-Chain Integrations
#### Certora - Threshold CCIP Update
* **Date:** 25 Sept 2025
* **Report:** [View PDF](https://drive.google.com/file/d/1Sxc5qx69qQtqdy7AtscoAHyGaSyqyYJM/view?usp=sharing)
* **Scope:** Threshold CCIP Update
#### MixBytes() - Cross-Chain Redemptions
* **Date:** 08 Sept 2025
* **Report:** [View PDF](https://drive.google.com/file/d/1rbVYly_VuW6LdAwhpbgxO8DpNiBn-6Vk/view?usp=sharing)
* **Scope:** Cross-chain bridge transfers
#### Zellic – Sui Integration (tBTC)
* **Date:** 01 May 2025
* **Report:** [View PDF](https://www.notion.so/threshold-labs/tBTC-Direct-Minting-Audit-Reports-1ec45959b48e8008ab0fe7b20a130760?source=copy_link#1f345959b48e8033a1cfffe4ab1922e1)
* **Scope:** tBTC integration with the Sui blockchain
#### Hashlock – Starknet Integration (tBTC)
* **Date:** April 2025
* **Report:** [View PDF](https://www.notion.so/threshold-labs/tBTC-Direct-Minting-Audit-Reports-1ec45959b48e8008ab0fe7b20a130760?source=copy_link#1f345959b48e80bba0cbccff21d5bf7b)
* **Scope:** tBTC integration with the StarkNet blockchain
#### **Thesis Defense – Base Integration (tBTC)**
* **Date:** April 11th, 2024
* **Report:** [View PDF](https://github.com/Thesis-Defense/Security-Audit-Reports/blob/main/PDFs/240411_Thesis_Defense-Threshold_tBTC_Base_Smart_Contracts_Security_Audit_Report.pdf)
* **Scope:** tBTC integration with the Base blockchain
## tBTC Bridge Audits
#### Least Authority – Solana Smart Contracts (tBTC)
* **Date:** 29 August 2023
* **Report:** [View Audit PDF](https://leastauthority.com/blog/audits/audit-of-keep-network-solana-smart-contracts/) - [Link to Least Authority](https://leastauthority.com/blog/audits/audit-of-keep-network-solana-smart-contracts/)
* **Scope:** Smart contracts for the tBTC Bridge on Solana
#### Least Authority – tBTC Bridge
* **Date:** 29 September 2022
* **Report:** [View Audit PDF](https://github.com/threshold-network/security-audits/blob/main/29-Sep-2022-LeastAuthority.pdf) - [Link to Least Authority](https://leastauthority.com/blog/audits/audit-of-keep-network-tbtc-bridge-v2/)
* **Scope:** Security audit of the core tBTC Bridge contracts
### T Vending Machine Audits
#### CertiK – Vending Machine
* **Date:** 19 November 2021
* **Report:** [View Audit PDF](https://github.com/threshold-network/security-audits/blob/main/19-Nov-2021-CertiK.pdf) - [Link to CertiK](https://www.certik.com/projects/threshold-network)
* **Scope:** Vending machine security audit
#### ChainSecurity – Staking, T Token, and Vending Machine
* **Date:** 09 November 2021
* **Report:** [View Audit PDF](https://github.com/threshold-network/security-audits/blob/main/09-Nov-2021-ChainSecurity.pdf) - [Link to ChainSecurity](https://chainsecurity.com/security-audit/threshold-network)
* **Scope:** Staking contracts, T token logic, and vending machine mechanisms
# Links
<table><thead><tr><th width="221.765625">Resource</th><th>Link</th></tr></thead><tbody><tr><td>Threshold Website</td><td><a href="https://threshold.network/">https://threshold.network</a></td></tr><tr><td>Official App</td><td><a href="https://app.threshold.network/">https://app.threshold.network</a></td></tr><tr><td>tBTC landing page</td><td><a href="https://tbtc.network/">https://tbtc.network</a></td></tr><tr><td>Github</td><td><a href="https://github.com/threshold-network">https://github.com/threshold-network</a></td></tr><tr><td>DefiLlama (tBTC)</td><td><a href="https://defillama.com/yields?token=TBTC">https://defillama.com/yields?token=TBTC</a></td></tr><tr><td>Bug Bounty</td><td><a href="https://immunefi.com/bug-bounty/thresholdnetwork/information/">https://immunefi.com/bug-bounty/thresholdnetwork/information/</a></td></tr><tr><td>Discord</td><td><a href="https://discord.gg/threshold">https://discord.gg/threshold</a></td></tr><tr><td>Governance Forum</td><td><a href="https://forum.threshold.network/">https://forum.threshold.network</a></td></tr><tr><td>Blog</td><td><a href="https://threshold.network/blog">https://threshold.network/blog</a></td></tr><tr><td>X (Threshold Network)</td><td><a href="https://twitter.com/thetnetwork">https://twitter.com/thetnetwork</a></td></tr><tr><td>X (tBTC)</td><td><a href="https://x.com/tBTC_project">https://twitter.com/tbtc_project</a></td></tr><tr><td>Dune Analytics</td><td><a href="https://dune.com/threshold_network/tbtc-performance-dashboard">https://dune.com/threshold_network/tbtc-performance-dashboard</a></td></tr><tr><td>CoinMarketCap (T token)</td><td><a href="https://coinmarketcap.com/currencies/threshold/">https://coinmarketcap.com/currencies/threshold/</a></td></tr><tr><td>CoinMarketCap (tBTC)</td><td><a href="https://coinmarketcap.com/currencies/tbtc-token/">https://coinmarketcap.com/currencies/tbtc-token/</a></td></tr><tr><td>Youtube</td><td><a href="https://www.youtube.com/@Threshold.Network">https://www.youtube.com/@Threshold.Network</a></td></tr><tr><td>Linkedin</td><td><a href="https://linkedin.com/company/threshold-network">https://linkedin.com/company/threshold-network</a></td></tr><tr><td>Galxe</td><td><a href="https://app.galxe.com/quest/Threshold">https://app.galxe.com/quest/Threshold</a></td></tr></tbody></table>프로젝트로 돌아가기 