Truebit
Last changed 2026-10-10 · Score recalculated — Rescored under Scoring v2, the published formula (avoid.net/scoring): 8 → 64. Problems weighed by who is responsible: incidents the subject suffered −6.4, concerns that are not fraud −3.2, problems around the subject, caused by others −1.6; legitimacy credit long-running +10. Version history →
Why this score
| Every page starts at | 65 |
| Concerns that are not fraud | -3.2 |
| Incidents it suffered (e.g. hacks) | -6.4 |
| Problems around it, caused by others | -1.6 |
| Long-running | +10 |
| Sum | 64 |
Score: 64/100 (kept between 0 and 100)
How scoring works →Summary
Truebit is an Ethereum-based protocol for verifiable off-chain computation, co-founded by mathematician Jason Teutsch and Solidity creator Christian Reitwiessner. On January 8, 2026, an integer overflow vulnerability in a five-year-old, closed-source legacy Purchase contract was exploited, draining 8,535 ETH (approximately $26.44 million) and causing the TRU token to collapse by over 99.9%; the attacker subsequently laundered all stolen funds through Tornado Cash.
Connected Entities
3 entities · 60 linked investigations- Ethereum→mentioned with→Ethereum Foundation(80%)
- Ethereum Foundation→mentioned with→Ethereum(80%)
- Truebit→mentioned with→Ethereum(70%)
- Truebit→mentioned with→Ethereum Foundation(80%)
1 submission awaiting moderator review.
Timeline(6 events)
2017
Truebit whitepaper published by Jason Teutsch and Christian Reitwiessner, introducing the verifiable off-chain computation protocol concept for Ethereum.
2021
Truebit deploys the TRU token Purchase contract (compiled with Solidity 0.6.10) containing the undetected integer overflow vulnerability; ETH bonding curve reserves begin accumulating.
September 2025
Truebit announces general availability of Truebit Verify platform for tokenized asset verification and enterprise data pipelines.
8 January 2026
Attacker at address 0x6C8EC8f14bE7C01672d31CFa5f2CEfeAB2562b50 exploits integer overflow in Truebit's legacy Purchase contract, draining 8,535 ETH (~$26.44 million). TRU token collapses 99.9%+ within hours.
9 January 2026
SlowMist, Halborn, and PeckShield publish technical post-mortems. PeckShield links attacker address to the prior Sparkle Protocol exploit. Truebit team confirms law enforcement contact and contract halt.
10 January 2026
Lookonchain confirms all 8,535 ETH (approx. $26.44 million) has been deposited into Tornado Cash and laundered. Recovery prospects effectively eliminated.
Decision Log
- #2rescore+56Recording pending10/10/2026, 6:49:04 PMhash DgWfeweMTQPSvB3HLHui5UiUf6UFJxgcUf4rpWVujH71
- slot 420905016 · hash GB6TddMyYFU1P3m27f2B7zou657rbwE5iyttJPRY8AoK
This investigation is cryptographically anchored to the Solana blockchain (1 decision). 14 of 16 cited source URLs have an Internet Archive snapshot.
model: claude-sonnet-4-6
generated: 5/4/2026, 2:54:19 AM
last updated: 10/10/2026, 6:49:04 PM
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