BigONE Exchange
Last changed 2026-10-10 · Score recalculated — Rescored under Scoring v2, the published formula (avoid.net/scoring): 24 → 38. Problems weighed by who is responsible: the subject's own conduct −30, incidents the subject suffered −10, concerns that are not fraud −9.2, problems around the subject, caused by others −2.8; legitimacy credit long-running +10, regulated +5. Version history →
Why this score
| Every page starts at | 65 |
| The subject's own conduct | -30 |
| Concerns that are not fraud | -9.2 |
| Incidents it suffered (e.g. hacks) | -10 |
| Problems around it, caused by others | -2.8 |
| Long-running | +10 |
| Regulated | +5 |
| Sum | 28 |
Score: 38/100 (kept between 0 and 100)
How scoring works →Summary
BigONE is a Seychelles-registered centralized cryptocurrency exchange that launched globally in November 2017, evolving from Yunbi.com, a China-based exchange backed by Li Xiaolai's INBlockchain fund. In July 2025 the exchange suffered a $27 million supply-chain hack; simultaneously, blockchain investigator ZachXBT alleged the platform had processed at least $60 million in pig-butchering and romance-scam proceeds through a single deposit address over the prior seven months. The exchange operates without a license from major financial regulators (FCA, ASIC, CySEC) and carries a documented history of alleged wash trading, user complaints about frozen withdrawals, and tournament prize disputes.
Connected Entities
6 entities · 60 linked investigations- Roger Ver→mentioned with→Bitcoin(70%)
- Ethereum→mentioned with→Bitcoin(60%)
- BigONE Exchange→mentioned with→Solana(65%)
- BigONE Exchange→mentioned with→ZachXBT(70%)
- BigONE Exchange→mentioned with→Ethereum(65%)
- BigONE Exchange→mentioned with→Bitcoin(70%)
- ZachXBT→mentioned with→Ethereum(70%)
- ZachXBT→mentioned with→Bitcoin(65%)
- BigONE Exchange→mentioned with→Roger Ver(80%)
- Solana→mentioned with→Ethereum(60%)
1 submission awaiting moderator review.
Timeline(10 events)
24 June 2017
The big.one domain is registered, laying groundwork for the global rebrand of Yunbi.com.
Cypherhunter entity profileNovember 2017
BigONE officially launches as a global cryptocurrency exchange, rebranding from Yunbi.com (INBlockchain / Li Xiaolai). Roger Ver (Bitcoin.com) is cited as an early backer and promoter.
NewsBTC press release23 June 2018
BigONE reports a 6,300,000% surge in BTC/USDT volume within three days, briefly reaching CoinMarketCap's top 3 by volume. Hacken.AI subsequently investigates and concludes the volumes are fabricated.
Hacken.AI investigation – MediumDecember 2018
Li Xiaolai, BigONE's founding backer, publicly announces retirement from crypto investing via Weibo.
Asia Crypto TodayMay 2019
Bitcointalk thread published alleging BigONE ran fake trading tournaments and withheld prize payments from winners.
Bitcointalk forum threadDecember 2024
ZachXBT identifies a single BigONE deposit address that had allegedly received over $60 million in pig-butchering and romance scam proceeds over the prior seven months.
Blockchain.news flash news9 July 2025
ZachXBT reports that a pig-butchering scam group opened a new BigONE Bitcoin deposit address and funneled approximately $4.5 million in scam proceeds through it within one week.
Blockchain.news flash news16 July 2025
BigONE suffers a $27 million supply-chain hack. Attackers compromise a developer's device and deploy malicious binaries that modify withdrawal-approval logic, draining hot wallets across Bitcoin, Ethereum, Tron, Solana, and BNB Smart Chain.
BleepingComputer16 July 2025
ZachXBT publicly criticizes BigONE following the hack, stating the exchange processed significant scam-related volumes and expressing no sympathy for the team.
The Defiant17 July 2025
BigONE pledges full user compensation from internal reserves and external borrowings; announces up to $8 million in recovery bounties; engages SlowMist for forensic investigation.
CoinTelegraphDecision Log
- slot 455361082 · hash B8ehahcyK7CTq3CX3mZru1y3HF5suutyEjUbCMapaxJD
- slot 425143578 · hash HRXtSJSYYjPXM16SJ3suCa1HtFwWJ3NYRYdfCotzBzfL
- slot 425143574 · hash 2BoRcWoz5F6CGLKejsFWWH2gwg9G7oZBUdi2HXuy8aHe
- slot 423640126 · hash F7MgfcYzc59ciGELZHnUVX2b7v9y65YfeppAHx1baskM
This investigation is cryptographically anchored to the Solana blockchain (4 decisions). 17 of 18 cited source URLs have an Internet Archive snapshot.
model: claude-sonnet-4-6
generated: 6/1/2026, 5:47:04 PM
last updated: 10/10/2026, 6:41:53 PM
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