chainalysis

Bitcoin

2026-08-31 13:30:00

Why a long-dormant Bitcoin OG moved $1 million through a custodian and then burned it remains unexplained

A puzzling Bitcoin transaction trail has left blockchain analysts with a rare case where the onchain record is detailed, yet the motive is still missing. Cointelegraph reported that a wallet dormant for nearly 12 years sent 20.00010537 BTC, worth about $1 million, to a large crypto custodian or centralized platform in March. Roughly three weeks later, 20.00006037 BTC came back to the same address, with only 4,500 satoshis, or about $3, missing. Less than two months later, the coins were deliberately sent to an unspendable address. The transaction is part of a broader 107 BTC burn in May, valued at roughly $8.5 million at the time. Chainalysis said five wallets that eventually destroyed their Bitcoin show strong indicators of common ownership. All five were funded on the same day in April 2014, later sent nearly identical dollar-value amounts of BTC to the same exchange deposit address, and much of the money can be traced back to Mt. Gox. One of the wallets sent 19.6 BTC in 60 transfers between 2022 and 2024, with 58 of those transfers clustered within 10% of about $10,400 despite major changes in Bitcoin’s price. Analysts have floated liquidation, wallet testing, compliance, and privacy as possible explanations, but none accounts for the full sequence.

870

BitMine

2026-08-31 13:55:32

WuBlockchain roundup: BitMine adds 53,501 ETH, Strategy buys 4,603 more BTC

WuBlockchain’s Aug. 31 daily roundup covered a fresh batch of crypto regulatory and industry developments, led by new treasury disclosures from BitMine and Strategy. BitMine said it bought 53,501 ETH over the past week, lifting its total holdings to 5,901,112 ETH, or about 4.9% of Ethereum’s total supply. Of that amount, 5,067,309 ETH has been staked, representing roughly 86% of its holdings, with expected annual staking income of about $335 million. As of Aug. 30, the company held about $541 million in cash and marketable securities, while its crypto assets, cash, securities and other investments totaled about $15.6 billion. Strategy, in an 8-K filed with the U.S. Securities and Exchange Commission, said it bought 4,603 BTC between Aug. 24 and Aug. 30 for about $369.7 million at an average price of roughly $80,318 per coin. As of Aug. 30, the company held 845,050 BTC acquired for about $63.73 billion in total, at an average purchase price of about $75,412. The roundup also noted the U.S. government’s sale of Anthropic shares once held by former FTX executives, token buyback activity across crypto projects, a contract protest filed by Chainalysis, and projections for regulated crypto trading volumes in Russia.

940

Bitcoin

2026-08-31 13:36:26

Dormant Bitcoin Wallet Moved 20 BTC to Exchange, Took It Back, Then Burned the Coins

A Bitcoin wallet that had been inactive for nearly 12 years moved its entire 20.00010537 BTC balance, worth about $1 million, to a large centralized exchange in March, according to a report cited by Cointelegraph. Roughly three weeks later, almost the exact same amount returned, with only 4,500 satoshis, or about $3, missing. The coins were then permanently burned in May. Blockchain analytics firm Chainalysis said the wallet shows a strong "common ownership" link with four other addresses. All five received their initial funding on the same day in April 2014, and most of the funds can be traced back to the now-defunct Mt. Gox exchange, pointing to an early Bitcoin holder. Bitcoin educator Bennet also found that one of the linked addresses sent 19.6 BTC to the custodian in 60 transactions between 2022 and 2024. In 58 of those transfers, the U.S. dollar value was close to $10,400 even as Bitcoin's price rose more than fourfold over that period. That pattern suggests a fixed-dollar liquidation strategy. Even so, the March transfer and return, followed by the burn, does not fit a standard transaction explanation, and Chainalysis said the motive remains unclear.

840

Policy and Re

2026-08-31 10:55:47

AI-driven impersonation scams are overtaking code exploits as a core crypto security threat

Impersonation and AI-assisted fraud are becoming one of the most serious security problems in crypto, shifting attention away from code bugs alone and toward identity, access control, and accountability. Chainalysis said at least $14 billion in on-chain funds flowed into crypto scams in 2025, though not all of that activity was tied to AI. Within a subset of cases linked on-chain to AI vendors, the average scam operation was about $3.2 million, compared with roughly $719,000 for scams without those links, a correlation the company did not describe as causal. Executives interviewed across the sector pointed to a broad change in attack methods. Binance Chief Security Officer Jimmy Su said smart-contract security has improved enough that attackers now focus more on people around protocols, credentials, and governance systems, citing Binance security team assistance in stopping a $1.2 million governance attack on BrainTrust. Binance Research also said access control failures accounted for about two-thirds of the $621 million lost to DeFi exploits in April 2026 alone. The report also highlights unresolved attribution issues, mixer-related tracing gaps, and a new frontier in AI agents that can pay, register for services, and potentially transact on users’ behalf. Several executives argued that the missing layer is not transaction verification itself, but trustworthy identity and responsibility behind those actions.

920

Chainalysis

2026-08-30 18:11:48

Chainalysis Sues ICE Over $94.6M Sole-Source Contract to TRM Labs

Blockchain analytics company Chainalysis has sued ICE before the U.S. Court of Federal Claims, alleging that the agency unlawfully awarded a $94.6 million sole-source contract to competitor TRM Labs. The contract provides forensic software and support for Homeland Security Task Force investigations, with a performance period running from July 1, 2026 to June 30, 2027. Chainalysis says it is the largest U.S. government blockchain-analysis contract awarded to date. In the complaint, Chainalysis says ICE issued an RFI on May 28 with 18 questions covering a proprietary fraud-victim database, AI-agent data retrieval, automated notices to virtual asset service providers to execute voluntary freezes, and cooperation with stablecoin issuers. Less than two weeks later, the final Statement of Need omitted many of those requirements, while ICE's market research used the RFI standard to conclude Chainalysis could not meet its needs. The suit also says “sextortion” appeared as one of three mission areas in the Statement of Need even though the RFI never mentioned it, and that some requirements closely match TRM’s proprietary product architecture. Chainalysis says it was the only company to submit a capability statement, yet ICE completed its market research the next day and named TRM the only supplier able to meet all requirements. ICE, according to the complaint, did not ask Chainalysis any follow-up questions.

910

Chainalysis

2026-08-30 17:57:32

Chainalysis sues ICE over $95 million blockchain analytics contract awarded to TRM Labs

Blockchain analytics firm Chainalysis has filed a lawsuit against U.S. Immigration and Customs Enforcement, or ICE, over the award of a $95 million blockchain analytics contract to rival TRM Labs. According to the report cited by Techub News, Chainalysis claims the contract was unfairly granted to its competitor. The company is asking a federal court to block the contract and require ICE to reopen the process under what it describes as full and open competition. The item was attributed to The Block. No additional details about the filing, the court, or the procurement process were disclosed in the source brief.

830

IRS

2026-08-28 10:02:28

IRS crypto enforcement is shifting toward wallets, with 86% of taxable onchain activity outside 1099-DA forms

The U.S. Internal Revenue Service is increasingly looking past tax forms and toward wallet-level tracking in crypto, according to a Forbes column by CoinTracker head of tax strategy Shehan Chandrasekera. Citing Chainalysis estimates, the piece says global taxable onchain activity will reach at least $457 billion in 2025, and 86% of that sits outside the visibility of reporting forms such as Form 1099-DA. That share includes self-custody wallets, decentralized exchanges, DeFi protocols, staking and lending income, and peer-to-peer payments. These channels generally do not involve brokers that would issue IRS forms. Chandrasekera did not say the IRS has announced a new formal “wallet enforcement” policy. Instead, he framed it as a practical shift created by rules already in effect. One key issue is that 1099-DA forms for tax year 2025 are expected to report gross proceeds while leaving cost basis fields, including Box 1g, mostly blank. Brokers will not begin reporting cost basis alongside proceeds until transactions after Jan. 1, 2026. That means taxpayers may need to restore cost basis themselves on Form 8949 or risk mismatches that could trigger automated CP2000 notices. The article also points to wallet-by-wallet cost basis tracking under Rev. Proc. 2024-28 and notes the IRS has long used blockchain analytics tools and programs such as Operation Hidden Treasure to identify unreported crypto income.

860

Chainalysis

2026-08-28 09:28:52

Sub-Saharan Africa On-Chain Volume Rose 52% to Over $205B Last Year, Movement Says

Movement Network cited Chainalysis' 2025 Geography of Cryptocurrency Report, showing sub-Saharan Africa's on-chain transaction volume surpassed $205 billion last year, up 52% year over year, ranking third globally. Nigeria saw digital asset inflows of over $92.1 billion, with Bitcoin accounting for 89% of the country's crypto purchases.

820