Ask about Chain Fusion · freeProtocol Information
Chain Fusion allows the Internet Computer Protocol (ICP) to interconnect with multiple blockchains in a decentralized manner, eliminating the need for a single trusted intermediary such as a bridge. The ability of ICP smart contracts to utilise threshold signature schemes to sign and submit transactions directly to other chains enables Chain-key tokens. Each Chain-key token on ICP is backed 1:1 by the native asset and is redeemable at any time. The native wallets are managed by a smart contracts on ICP, there are no intermediaries or centralized bridges. Chain-key tokens begin with ck (e.g. ckBTC, ckETH, etc.). They transact quickly (1 second finality) and transaction fees are negligible.
Audits:
Methodology
TVL: Counts ETH and ERC20 tokens held at 0xb25eA1D493B49a1DeD42aC5B1208cC618f9A9B80 on Ethereum. The Bitcoin bucket uses the current ckBTC ledger supply as a proxy for BTC backing, excluding burned ckBTC and deposits not yet minted; it does not independently sum Bitcoin UTXOs.View code on GitHubHacks
Date: Sep 28, 2019
Amount: $6.4m
Classification: Key Compromise
Technique: Private Key Compromised
Chains: Ethereum
Language: Solidity
Target Type: DeFi Protocol
Competitors
Chain Fusion history
TVL is the default DefiLlama definition. Daily values are UTC snapshots from Dec 21, 2023 to Oct 20, 2026.
All-time high TVL: $68.01m on Oct 7, 2025. All-time low TVL: $577,216 on Dec 21, 2023.
Daily TVL, Sep 21, 2026 to Oct 20, 2026
| Date | TVL |
|---|---|
| Sep 21, 2026 | $25.28m |
| Sep 22, 2026 | $26.65m |
| Sep 23, 2026 | $26.47m |
| Sep 24, 2026 | $26m |
| Sep 25, 2026 | $26.02m |
| Sep 26, 2026 | $25.73m |
| Sep 27, 2026 | $25.81m |
| Sep 28, 2026 | $25.69m |
| Sep 29, 2026 | $25.37m |
| Sep 30, 2026 | $25.63m |
| Oct 1, 2026 | $25.67m |
| Oct 2, 2026 | $25.95m |
| Oct 3, 2026 | $25.77m |
| Oct 4, 2026 | $25.71m |
| Oct 5, 2026 | $26.04m |
| Oct 6, 2026 | $25.59m |
| Oct 7, 2026 | $25.5m |
| Oct 8, 2026 | $24.85m |
| Oct 9, 2026 | $24.33m |
| Oct 10, 2026 | $24.48m |
| Oct 11, 2026 | $24.6m |
| Oct 12, 2026 | $24.87m |
| Oct 13, 2026 | $24.32m |
| Oct 14, 2026 | $24.83m |
| Oct 15, 2026 | $24.42m |
| Oct 16, 2026 | $24.53m |
| Oct 17, 2026 | $24.32m |
| Oct 18, 2026 | $24.33m |
| Oct 19, 2026 | $24.44m |
| Oct 20, 2026 | $24.51m |
TVL at each month end, Nov 2024 to Oct 2026
| Date | TVL |
|---|---|
| Nov 30, 2024 | $28.03m |
| Dec 31, 2024 | $27.18m |
| Jan 31, 2025 | $28.93m |
| Feb 28, 2025 | $25.18m |
| Mar 31, 2025 | $29.02m |
| Apr 30, 2025 | $28.74m |
| May 31, 2025 | $30.71m |
| Jun 30, 2025 | $41.11m |
| Jul 31, 2025 | $57.12m |
| Aug 31, 2025 | $62.94m |
| Sep 30, 2025 | $62.82m |
| Oct 31, 2025 | $59.24m |
| Nov 30, 2025 | $44.01m |
| Dec 31, 2025 | $40.63m |
| Jan 31, 2026 | $38.8m |
| Feb 28, 2026 | $28.54m |
| Mar 31, 2026 | $25.78m |
| Apr 30, 2026 | $22.86m |
| May 31, 2026 | $18.26m |
| Jun 30, 2026 | $17.92m |
| Jul 31, 2026 | $19.67m |
| Aug 31, 2026 | $24.85m |
| Sep 30, 2026 | $25.63m |
| Oct 20, 2026 (latest) | $24.51m |
TVL at each year end, Dec 31, 2023 to Dec 31, 2025
| Date | TVL |
|---|---|
| Dec 31, 2023 | $6.82m |
| Dec 31, 2024 | $27.18m |
| Dec 31, 2025 | $40.63m |
The .csv export on the chart above downloads every daily value. The same data is in the public API: https://api.llama.fi/protocol/chain-fusion
Frequently asked questions
What is Chain Fusion's TVL?
As of Oct 20, 2026, Chain Fusion has $24.78m in total value locked. TVL has decreased 2.1% over the past 30 days.
What chains does Chain Fusion operate on?
Chain Fusion operates on 2 chains: Bitcoin and Ethereum. Bitcoin holds the largest share at 78.6%.
How does Chain Fusion's TVL compare to similar protocols?
Among Decentralized BTC protocols tracked by DefiLlama, Chain Fusion ranks #2 by TVL. The category holds $388.06m across 6 protocols, and Chain Fusion accounts for 6.4% of that total. Similar protocols include tBTC, SUBFROST, BitSafe CBTC, Zeus Network, and iBTC Network.
Has Chain Fusion ever been exploited?
Chain Fusion has 1 recorded security incident. The most recent incident occurred on Sep 28, 2019 and involved $6.4m. It was classified as Key Compromise.