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Cardano Founder Charles Hoskinson Challenges Bitcoin Quantum Plan

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Brian Armstrong's Bold Prediction: AI Agents Will Soon Dominate Global Financial

TLDR

  • Charles Hoskinson questioned Bitcoin’s ability to protect legacy coins from future quantum threats.
  • Adam Back defended ongoing post-quantum research and dismissed criticism as financially motivated.
  • The debate focused on exposed public keys in early Bitcoin wallet addresses.
  • Hoskinson said securing legacy coins may require a hard fork.
  • Back described current quantum computers as theoretical and limited to laboratory experiments.

Charles Hoskinson challenged Bitcoin’s post-quantum roadmap after Adam Back defended current research efforts. Back rejected claims that developers ignore quantum threats and called such warnings financially driven. The exchange unfolded on X and centered on how Bitcoin would secure exposed legacy coins.

Back, who leads Blockstream, responded to rising concerns about quantum computing risks. He argued that critics spread fear to promote post-quantum startups and related stocks. He stated, “Mostly people with investments in PQ startups and stocks are those falsely claiming Bitcoin is doing nothing.”

Bitcoin Post-Quantum Strategy Faces Scrutiny

Back said current Cryptographically Relevant Quantum Computers remain theoretical and limited to laboratory settings. He described them as “blue sky research” still trapped in experiments. He contrasted that view with what he called the “actual fast pace of bitcoin PQ work.”

He maintained that developers continue to research quantum-resistant cryptography for Bitcoin. He argued that public criticism ignores ongoing technical discussions within the community. However, he did not outline a detailed timeline for deployment in his posts.

He also pushed back against claims that the network lacks preparation. He said critics become upset when confronted with technical realities. Therefore, he framed the debate as driven by misinformation rather than engineering gaps.

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Hoskinson responded directly to Back’s comments on X. He focused on legacy wallet structures that expose public keys on-chain. He questioned how developers would secure those coins without a hard fork.

Cardano Founder Raises Legacy Coin Concerns

Hoskinson pointed to early Pay-to-PubKey and reused P2PKH addresses. These addresses reveal public keys directly on the blockchain. A powerful quantum computer could use Shor’s algorithm to derive private keys from those public keys.

He warned that attackers could target dormant holdings, including coins linked to Satoshi Nakamoto.

He wrote, “Not sure how you address the legacy coins without a hard fork.” He added, “But best of luck. We are all watching.”

His comments highlighted the complexity of altering Bitcoin’s base rules. A hard fork would require broad network agreement and coordinated upgrades. Such changes often create debate within decentralized communities.

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Back did not directly address the hard fork scenario in his initial response. Instead, he reiterated that practical quantum threats remain distant. He maintained that Bitcoin research continues at a steady pace.

The discussion reflects ongoing technical disagreement between prominent industry figures. Both executives used X to state their positions publicly. As of the latest exchange, neither side announced new protocol changes or formal proposals.

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Crypto World

Goldman Sachs Targets Income-Focused Bitcoin Exposure

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Crypto Breaking News

Goldman Sachs Targets Income-Focused Bitcoin Exposure

Goldman Sachs has filed for a Bitcoin Premium Income ETF with the U.S. Securities and Exchange Commission. The product focuses on income generation while offering controlled exposure to Bitcoin price movements. It reflects growing demand for structured crypto products among traditional market participants.

The fund will not hold Bitcoin directly, and it avoids direct spot ownership. Instead, it will invest in shares of existing spot Bitcoin exchange-traded products. This approach allows the bank to offer exposure while managing operational and custody risks.

Additionally, the ETF will use an options overwrite strategy to generate income. This method involves selling options against held positions to collect premiums regularly. As a result, the fund aims to deliver steady income with moderated exposure to price swings.

The strategy limits potential upside, but it also reduces downside risk during market declines. This design suits clients seeking stability and predictable returns over aggressive growth. Therefore, the product aligns with demand for lower-volatility crypto exposure.

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Structured Strategy Reflects Shifting Institutional Approach

The ETF introduces a structured format that blends traditional finance techniques with digital asset exposure. Goldman Sachs has adapted familiar income strategies to fit the evolving cryptocurrency market. This move signals deeper integration between legacy finance and digital assets.

Market analysts describe the strategy as tailored for conservative portfolios seeking alternative income streams. The fund sacrifices some price gains in exchange for regular yield generation. Consequently, it positions itself differently from standard spot Bitcoin ETFs.

Moreover, the indirect exposure through existing ETPs adds another layer of diversification. It reduces reliance on a single asset structure while maintaining exposure to Bitcoin trends. This structure also aligns with regulatory and operational preferences.

The filing highlights how banks continue to refine crypto offerings beyond simple price tracking. Institutions now focus on customization, risk control, and income strategies. This shift indicates a broader evolution in how financial firms approach digital assets.

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Competition Intensifies After Morgan Stanley ETF Success

The filing follows a strong debut from Morgan Stanley’s recently launched spot Bitcoin ETF. The product introduced aggressive pricing and triggered competition among major asset managers. It set a new benchmark for cost efficiency in Bitcoin ETF offerings.

Morgan Stanley priced its ETF at a low expense ratio, undercutting key competitors in the market. This pricing strategy pressured other firms to adjust their fee structures. As a result, competition has increased across the Bitcoin ETF segment.

Other major players have also entered the space with varying strategies and pricing models. These include funds focusing on direct exposure and others offering hybrid approaches. Goldman Sachs now adds a structured-income-focused option to the mix.

The growing range of products reflects rising institutional interest in Bitcoin-linked investments. Banks continue to expand offerings to capture different segments of market demand. This trend suggests continued innovation and competition in crypto financial products.

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Risk & affiliate notice: Crypto assets are volatile and capital is at risk. This article may contain affiliate links. Read full disclosure

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eToro Acquires Zengo in Self-Custody Push, CEO Predicts $250K Bitcoin

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eToro Acquires Zengo in Self-Custody Push, CEO Predicts $250K Bitcoin

EToro said Wednesday it agreed to acquire self-custodial crypto wallet provider Zengo, deepening the trading platform’s push into onchain products as digital assets remain central to its business.

The deal will let eToro add Zengo’s wallet technology and broaden its offering in areas such as tokenized assets, prediction markets, perpetuals and yield products, according to the company. Terms were not disclosed. Bloomberg reported the transaction is worth about $70 million, mostly in cash, citing a person familiar with the matter.

CEO Yoni Assia said at Paris Blockchain Week during a fireside chat that the acquisition fits eToro’s effort to attract a more crypto native user base while expanding beyond regulated brokerage products into self-custody infrastructure.

Crypto activities have become an important revenue source for the platform. eToro reported total revenue and income of $13.8 billion in 2025, of which $12.98 billion was revenue from crypto assets.

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Yoni Assia, CEO of eToro, speaking at Paris Blockchain Week in 2026. Source: Cointelegraph

Assia keeps $250,000 Bitcoin target

At Paris Blockchain Week, Assia said he expects the current market slowdown to last another quarter before Bitcoin (BTC) returns to an accumulation phase, eventually pushing the token above $250,000.

“Bitcoin is on the path eventually to $250,000, $500,000 and beyond.”

EToro’s CEO is the latest industry figure to call for a $250,000 Bitcoin price target, following BitMEX co-founder Arthur Hayes and “Rich Dad Poor Dad” author Robert Kiyosaki.

Related: Deutsche Börse invests $200 million in Kraken parent Payward

However, other large companies remain divided on Bitcoin’s trajectory for the rest of the year, with some questioning the relevance of the four-year cycle theory.

Galaxy Digital urged investor caution and described the year ahead as “too chaotic to predict,” citing looming uncertainties such as the US midterm elections and shifting monetary policy.

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Top assets by market capitalization. Source: CompaniesMarketCap

Regardless of the timeline, a Bitcoin rally to $250,000 would require Bitcoin’s price to increase by about 3.3-fold and implies a $5 trillion market capitalization. This would make BTC the world’s second-largest asset after gold, up from the 12th spot, according to CompaniesMarketCap data.

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