India’s Central Bureau of Investigation arrested Ayush Varshney, co-founder and chief technology officer of Darwin Labs Private Limited, on March 10, 2026, in connection with the sprawling GainBitcoin fraud case. The arrest pulls renewed attention to one of India’s biggest crypto-linked investment scandals, a scheme investigators say diverted roughly ₹20,000 crore, or about $2.1 billion, along with around 29,000 Bitcoin from investors.
Varshney was detained after being intercepted at Mumbai’s international airport while allegedly attempting to leave for Sri Lanka. His arrest matters not only because of the scale of the alleged fraud, but because the case now turns heavily on whether investigators can trace, access, and eventually recover digital assets tied to the scheme.
CBI ARRESTS KEY PERSON IN MULTI-THOUSAND CRORE GAINBITCOIN CRYPTOCURRENCY SCAM pic.twitter.com/wapt91EWWj
— Central Bureau of Investigation (India) (@CBIHeadquarters) March 11, 2026
The alleged technical backbone behind GainBitcoin
Investigators have described Darwin Labs as the firm that built the digital infrastructure supporting GainBitcoin’s investor-facing operations. According to the case record, the company developed the systems used to onboard funds, display balances, and manage payout flows across the scheme’s ecosystem.
The infrastructure attributed to Darwin Labs included the MCAP ERC-20 token and its associated smart contract, the GBMiners.com Bitcoin mining pool platform, a Bitcoin payment gateway, the Coin Bank Bitcoin wallet, and the investor-facing website www.gainbitcoin.com. Taken together, those tools formed the operational layer that allegedly allowed the platform to present itself as a functioning crypto investment and mining business.
Investigators characterized Darwin Labs as the “technical backbone of the entire GainBitcoin scam,” arguing that the systems created the appearance of mining and payout activity without verifiable evidence that any real mining operation existed. That allegation places the technical design of the platform at the center of the case rather than treating it as a secondary support function.
How the scheme allegedly unraveled
GainBitcoin was launched in 2015 by Amit Bhardwaj and associates and promoted as a cloud-mining and multi-level marketing operation promising returns of about 10% a month over 18 months. The model initially paid investors in Bitcoin, a structure that appears to have helped sustain both inflows and recruitment while confidence remained intact.
That structure began to break down by 2017, when payouts reportedly started to weaken as new capital slowed. Investigators say the scheme then shifted from Bitcoin payments to MCAP, an in-house token with lower value, a move that significantly reduced what investors could recover.
The collapse triggered multiple FIRs across India and eventually led to a wider judicial response. On December 13, 2023, the Supreme Court directed the CBI to consolidate the scattered investigations into a single probe so authorities could trace funds more effectively and coordinate asset recovery.
Varshney’s arrest followed the issuance of a Look Out Circular and his detention at Mumbai airport, signaling a more aggressive phase in that consolidated investigation. The case now raises a practical question that goes beyond the courtroom: whether traced wallets, keys, or tokens tied to the alleged diversion can actually be secured and liquidated without causing fresh disruption.
The broader lesson is clear. Opaque custody structures and custom token mechanisms can sharply worsen investor harm when native crypto payouts are replaced with illiquid in-house substitutes, and that is precisely why the GainBitcoin investigation now hinges on technical tracing, wallet attribution, and the difficult mechanics of restitution.