tBTC

tBTC receives a B- risk grade (30/100) from Hindenrank, where lower scores indicate lower risk. Moderate risk — cross-chain bridge operations and threshold cryptography introduce inherent complexity, balanced by multiple years of operation and no loss-of-funds incidents. tBTC is a decentralized Bitcoin bridge operated by the Threshold Network, enabling BTC holders to use their Bitcoin across Ethereum and 7+ other blockchains. With $376M in locked BTC and over 25,000 tBTC minted, it is one of the leading decentralized BTC wrappers. Its B- grade reflects moderate bridge risk inherent to cross-chain operations, balanced by years of operation without loss-of-funds incidents.

The key risks identified for tBTC are: (1) tBTC uses threshold cryptography where a group of node operators collectively custody deposited Bitcoin. While no single operator can steal funds, a coordinated compromise of enough operators could theoretically drain locked BTC. The random selection process and staking requirements mitigate this risk. (2) The protocol operates across 8+ blockchains, each with its own bridge adapter. A vulnerability in any chain's adapter could potentially allow minting of unbacked tBTC, though each integration undergoes security review. (3) T token value directly impacts bridge security since operators stake T as economic collateral. A significant T price decline could reduce the cost of attacking the bridge relative to the value of locked BTC.

tBTC scores 30/100 across eight risk dimensions: Mechanism Novelty: 3/15, Interaction Severity: 6/20, Oracle Surface: 2/10, Documentation Gaps: 2/10, Track Record: 6/15, Scale Exposure: 5/10, Regulatory Risk: 2/10, Vitality Risk: 4/10. The highest risk area is Scale Exposure at 5/10.

Among 24 rated Bridge protocols on Hindenrank, tBTC ranks #4 by safety (lowest risk score = safest). Its 30/100 risk score and B- grade place it among the safer Bridge protocols.

tBTC scores 6/15 on the Track Record risk dimension, indicating some history of security incidents or exploits. Higher scores reflect more severe or frequent incidents. Review the full risk report for details.