This year, Bitcoin pioneer Adam Back and his founded company Blockstream have repeatedly been at the center of public opinion in the crypto community. In February, documents related to Jeffrey Epstein released by the U.S. Department of Justice revealed that Jeffrey Epstein had invested in Blockstream in 2014 through a fund associated with Joichi Ito. In April, The New York Times published an investigative report listing Adam Back as one of the strongest candidates for Bitcoin inventor Satoshi Nakamoto. At the same time, BSTR, a Bitcoin treasury company he helped promote, is preparing to go public through a SPAC.
However, new controversies quickly emerged. Earlier this month, the investigative account NatInfoSec published a lengthy article accusing Blockstream of potentially raising billions of dollars from investors under the guise of mining revenue, but with doubts about the actual mining farms and hashrate support, and that the related structure exhibits Ponzi-like characteristics. The article’s wording is strong, and although some inferences still require independent verification, the doubts it raises have prompted a re-examination of Blockstream by the market.
Accusation Chain 1: Doubt over Hashrate and Redemption Capability. This is the most financially logical part of the entire accusation. NatInfoSec points out that to fulfill the currently issued BMN obligations, Blockstream needs to operate a hashrate of over 20 EH/s. If contract buffer clauses are included in the calculation, the required hashrate could be as high as 35 to 45 EH/s. However, Blockstream’s own dashboard shows that the actual current hashrate is only 15 EH/s. NatInfoSec claims it could not find evidence in public channels matching the scale of Blockstream’s notes.
In NatInfoSec’s view, if mine output cannot cover redemption obligations, one must question where the BTC ultimately received by investors comes from. The article specifically mentions the Substitute Performance BTC mechanism in the BMN2 clause, stating that this clause allows Blockstream to fulfill delivery obligations with BTC from any source within the 48-month contract period, without prior notice, without disclosing the source, and with no quantity limit. The article also states that BMN1 previously supplemented its redemption by purchasing BTC on the open market, which further shifts the core issue of BMN from “is mining revenue sufficient” to “is the source of redemption verifiable.”
Accusation Chain 2: High Yield and High-Risk Debt Assumption. The article mentions that Blockstream has issued related notes of different tiers through platforms like STOKR, with yields gradually increasing from approximately 9.775% to 18%, with the latest tier approaching 20%. However, some maturity arrangements do not involve direct principal repayment but rather rolling over into new notes with higher yields. Bitcoin mining is a highly cyclical industry, and a fixed annual yield of around 20% requires the issuer to provide a clear explanation of the source in the industry context.
Accusation Chain 3: Chris Cook’s Prior Record and Disclosure Issues. The most impactful part of the accusation concerns the background of Christopher William Cook. NatInfoSec claims that Cook was a key executive in Blockstream’s mining operations and currently serves as CEO of Exacore. The article points out that Exacore is the related operating entity spun off from Blockstream’s mining business. A review of U.S. federal court records reveals that Cook was sentenced to 41 months in federal prison in 2008 for mail fraud and ordered to pay approximately $1.85 million in restitution. The article states that this conviction record was not disclosed in any of the BMN issuance documents. Furthermore, Blockstream’s marketing materials on the STOKR platform had previously mentioned Cook.
[ChainCatcher]
Blockstream Under Fire: Cryptoeconomic Fraud Allegations Threaten Core Revenue Model and SPAC Debut
The crypto world is witnessing a pivotal crisis: Blockstream, the influential infrastructure firm co-founded by Bitcoin cryptography pioneer Adam Back, is facing a cascade of serious, interlocking allegations that challenge the legitimacy of its revenue-engineered financings—and potentially its core mining operations.
The latest blow comes from NatInfoSec’s meticulously sourced 20,000+ word investigation, which posits that Blockstream’s Bitcoin Mining Notes (BMN1 and BMN2), issued via platforms like STOKR, may operate under a structural deficit tantamount to indirect fraud. This isn’t speculative whisper; it’s an analytical dissection grounded in contractual terms, publicly available hashrate telemetry, financial modeling, and U.S. federal court records.
The Hashrate Deficit: A Mathematical Impossibility
The most damning technical point is the massive hashrate gap. According to NatInfoSec, fulfilling current BMN redemption obligations—especially under stress scenarios and buffer clauses—requires 35–45 EH/s of sustainable mining capacity. Blockstream’s publicly reported hashrate, per its own dashboard, stands at just 15 EH/s. That’s a deficit of 130–200%, depending on assumptions.
This isn’t a “temporary dip” issue. Mining revenue is real-time and verifiable on-chain via block rewards and associated mining pools. There is no plausible way to generate 20+ EH/s of confirmed, consistent hashrate without broadcasting it across public mining pools and blockchain analytics (e.g., Blockchair, Bitcoin.com). The absence of such visibility suggests the BMN redemption promise is not asset-backed—but liability-backed. Which, without an independent audit or capital buffer disclosure, strongly echoes the Ponzi dynamic: new investor inflows used to service earlier redemptions.
The “Substitute Performance” clause in BMN2 is particularly alarming: it allows Blockstream to deliver BTC from any source, with no disclosure, no notice, and no cap on quantity. That clause effectively severs the instrument’s link to mining output and turns BMN into an uncollateralized, high-risk obligation. If Blockstream cannot disclose how it sources BTC to fulfill deliveries—especially if the source is borrowing, spot-market purchases during rate spikes, or rollovers—the product should be classified as a leveraged debt security, not a mining-revenue note.
The Yield Mirage: 20% Is Not a Mining ROI—It’s a Red Flag
Another critical flaw is the unsustainable yield curve. Notes have yielded 9.775% → 18% → 20%, with newer offerings甚至 coupling principal rollovers into higher-yielding successor notes—a classic structuring tactic to postpone default. In 2021–2024 Bitcoin mining history, mining yield per annum has rarely exceeded 25% total over 2–3 years (net of capex, electricity, downtime), and rarely in a guaranteed form.
A fixed 20% per year claim inherently implies:
– Subsidized (or hidden) electricity costs (unrealistic for a third-party operator),
– Excessive leverage (which would require collateral not disclosed),
– Or—most likely—external capital being redirected as “revenue,” i.e., principal repayment mislabeled.
Yield alone isn’t fraud. But in combination with opacity and non-verifiable asset backing? It is material misrepresentation.
The Chris Cook Problem: Undisclosed Fraud Conviction
The most legally perilous thread is the non-disclosure of Christopher Cook’s felony record. Cook, Blockstream’s former mining operations executive and now CEO of Exacore (the spun-out entity running the mining infrastructure), was sentenced to 41 months in federal prison in 2008 for mail fraud and ordered to repay $1.85 million. U.S. federal conviction records are public and easily traceable.
Yet, this conviction appears nowhere in BMN offering documents, risk factor sections, or STOKR marketing materials. Even if Cook was not the issuer, under SEC Rule 506(d) (and equivalents in MiCA/UK FCA frameworks), a directed selling agent or affiliate operator with an unexpired disqualifying event can invalidate an exemption for private placements.
For BSTR—the SPAC poised to take Exacore public—the Cook conviction could constitute a material adverse effect. SPAC due diligence rarely overlooks felony fraud; it’s a automatic red flag for underwriters and future shareholders. If BSTR proceeds未经full disclosure, it faces near-certain SEC enforcement action or shareholder litigation upon listing.
Market Implications: A Tipping Point for “Revenue-Backed” Instruments
Blockstream is not just a mining farm. It’s a cornerstone of Bitcoin’s “non-sovereign infrastructure” thesis—liquid derivatives, Elements sidechains, mining pool tech. But if investors conclude the financial engineering arm is built on shaky or deceptive foundations, trust in the broader ecosystem erodes.
Near-term:
– BMN holders will demand audits, transparency, or defaults. Retail-heavy STOKR investors may organize class actions.
– SPAC BSTR faces valuation re-pricing—or cancellation—pending due diligence.
Regulatory:
– SEC likely scrutinizing Blockstream’s filings. If BMN instruments are deemed unregistered securities, all proceeds may be subject to rescission.
– EU MiCA regulators may impose stricter “revenue-backed token” disclosures post-incident.
Market sentiment:
– Another “trust but verify” moment. Institutions will flee opaque crypto finance products—especially in mining, where capex opacity invites fraud.
– CleanSpark, Marathon, and other clean-sheet public miners may gain market share by contrast.
Verdict
This is not about conspiracy theories or ad hominem attacks. It’s about verifiable gaps between promise and performance, compounded by undisclosed material risks. The NatInfoSec report doesn’t conclude fraud—but it presents prima facie evidence of structural misalignment: hashrate shortfall, yield mismatch, disclosure failure. Unless Blockstream releases an independent third-party audit of its mining economics and capital reserves within 30 days, skepticism becomes justification.
For investors: Treat BMN as high-risk, illiquid debt until proven otherwise. For the industry: This episode should trigger a recalibration of how “mining-backed” products are vetted—particularly where hashrate, yield, and personnel integrity intersect.
The reputation of Adam Back and Blockstream is now on the line—not for what they built, but for what they didn’t disclose.