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Bitcoin lending protocol Tropykus announces shutdown of its current version; deposit and lending functions are permanently discontinued.

According to an official announcement by Tropykus, the decentralized lending protocol Tropykus has initiated a phased shutdown of its current protocol version. Deposit and lending functionalities will be permanently discontinued. Users may withdraw funds and repay loans via tropykus.com until the deadline of July 27, 2026; thereafter, such operations will only be supported through direct interaction with smart contracts. The team stated that this shutdown decision stems from long-term strategic evolution—not from the security report previously received by Money on Chain, a partner of Tropykus. That report had prompted the protocol to proactively suspend deposits and new lending activities. However, the team emphasized that internal discussions regarding the shutdown predated the security incident, and the incident merely accelerated the decision. Technically, the team noted that the original architecture was designed for an earlier technological environment and is no longer capable of meeting long-term development needs in the face of emerging security challenges posed by technologies such as artificial intelligence. The team advises all users to complete withdrawals and settle their lending positions via tropykus.com before July 27, 2026. After this date, users will need technical proficiency to interact directly with smart contracts to perform these operations.

Developer proposes to fork Bitcoin eCash, reallocate Satoshi Nakamoto's BTC holdings

Paul Sztorc, a developer who has long focused on Bitcoin scaling solutions, proposed a Bitcoin hard fork named eCash, set to occur at block height 964,000 in August 2026. Users holding BTC at the time of the fork will receive eCash on a 1:1 basis, and the new chain will introduce the Drivechains sidechain architecture. The controversy mainly centers on the plan to pre-allocate a portion of the eCash corresponding to the Satoshi Nakamoto address on the new chain to early investors, a move that has drawn criticism from the community, with some accusing it of "stealing" tokens. Paul Sztorc stated that this initiative aims to provide incentives for development and collaboration before the project's launch.

QCP: BTC Monthly Gain Exceeds 14%; Geopolitical and Security Incidents Disrupt Market Sentiment

QCP Group’s analysis states that U.S.-Iran negotiations have once again collapsed, while the Middle East ceasefire continues, leaving the overall geopolitical landscape relatively static. A shooting incident occurred at the White House Correspondents’ Dinner, with Trump suspected as the target. Following Asia’s market open, BTC briefly surged past $79,000 and ETH above $2,400—but gains quickly reversed amid concerns triggered by news of Iran’s Foreign Minister traveling to Russia for talks with Putin. Since early April, BTC has rallied over 14% cumulatively, marking four consecutive weeks of positive closes. Spot ETFs recorded nine straight days of net inflows totaling approximately $2.11 billion. Strategy funds added over $3.8 billion worth of BTC in the past month. The current key resistance level for BTC lies near the CME gap around $82,000. BTC perpetual contract funding rates remain persistently negative; a breakout above this level could trigger short-covering. Implied volatility continues declining, and risk-reversal skew has narrowed somewhat, signaling gradually rising market interest in upside exposure. Key events this week: - April 29: Earnings reports from Microsoft, Amazon, Meta, and Google, plus the FOMC interest-rate decision. - April 30: Apple earnings report, U.S. Q1 GDP data, and March PCE inflation data.

Balancer attacker has exchanged 21,000 ETH for 617.43 BTC over the past three days

according to Onchain Lens monitoring, a Balancer attacker has exchanged 21,000 ETH for 617.43 BTC over the past three days, worth $48.72 million. The attacker currently still holds 1,000 ETH, worth $2.32 million, and may conduct further sell-offs.

Bitcoin’s Quantum Security Crisis: 6.9 Million BTC at Risk, Governance Challenges Impede Response

According to CoinDesk, while quantum computers cannot break Bitcoin’s mining mechanism or blockchain ledger, they could potentially crack the elliptic curve cryptography (ECC) that secures wallet ownership—using Shor’s algorithm. Currently, approximately 6.9 million BTC—roughly one-third of the total supply—are at potential risk because their public keys are already visible on-chain; this includes Satoshi Nakamoto’s estimated early holdings of about 1 million BTC. Transactions generated after Ethereum’s 2021 Taproot upgrade are similarly exposed due to public key disclosure. Ethereum has maintained an official post-quantum migration plan since 2018, with four full-time teams and over ten independent development groups, and operates a dedicated progress website at pq.ethereum.org. In contrast, Bitcoin currently lacks a unified roadmap for quantum resistance: existing proposals such as BIP-360 and BitMEX Research’s detection framework have not gained broad support among core developers. Prominent Bitcoin advocate Nic Carter has bluntly labeled Bitcoin’s quantum response “the worst,” while Blockstream CEO Adam Back acknowledges that current quantum systems remain confined to laboratory settings—but still endorses deploying optional upgrade paths in advance. Analysts note that Bitcoin’s decentralized governance culture makes coordinating large-scale security upgrades extremely difficult, and resolving historical issues—such as how to handle Satoshi’s holdings—presents a particularly thorny dilemma. A related Google paper warns that once quantum attacks become feasible, the window for effective response may already have closed.

Researcher cracks 15-bit ECC key, earns 1 Bitcoin reward

According to Odaily, independent researcher Giancarlo Lelli was awarded the Q-Day Prize and 1 Bitcoin by quantum security startup Project Eleven for successfully cracking the encryption keys protecting Bitcoin. Giancarlo Lelli utilized publicly available quantum hardware and a variant of Shor's algorithm to crack a 15-bit encryption key among 32,767 possibilities. The difficulty of this quantum attack is 512 times greater than the 6-bit key record set in September 2025. Project Eleven CEO Alex Pruden stated that the resource requirements for such attacks continue to decline, with approximately 6.9 million Bitcoins currently held in vulnerable static addresses, including 1 million Bitcoins owned by Satoshi Nakamoto. The Bitcoin network has proposed BIP-360 to introduce quantum-resistant address types, while platforms such as Ethereum, Ripple, and Tron have also begun releasing plans for transitioning to post-quantum defenses.

The Balancer hacker has currently converted 14,300 ETH into 419.3 BTC.

According to on-chain analyst Yujin (@EmberCN), the hacker who stole approximately $98 million worth of assets from Balancer last November has been continuously swapping ETH for BTC via THORChain. To date, the hacker has swapped a total of 14,300 ETH for 419.3 BTC (approximately $32.51 million). The hacker currently holds 7,700 ETH on the Ethereum chain and 419.3 BTC on the Bitcoin chain, with a combined value of approximately $50.4 million. Since the price of ETH has fallen significantly from around $3,600 at the time of the theft, the value of the hacker’s holdings has shrunk by nearly half—from the original $98 million.

Balancer attacker exchanges 13,191 ETH for 386 BTC

According to Onchain Lens monitoring, the Balancer attacker (0xa6d6...BDaA) exchanged 13,191 ETH for 386.52 BTC, worth $30.54 million, over the past 15 hours. The attacker currently still holds 8,000 ETH, valued at $18.52 million.

Balancer hacker has swapped 7,000 ETH for 204.7 BTC, worth approximately $15.88 million

According to on-chain analyst Yujin (@EmberCN), the hacker who stole approximately $98 million in assets from Balancer last November is today exchanging ETH for BTC via THORChain. So far, 7,000 ETH have been swapped for 204.7 BTC—valued at roughly $15.88 million—and the process continues. Additionally, it has been disclosed that this address currently holds 15,000 ETH on Ethereum, valued at approximately $34.65 million, and 204.7 BTC on Bitcoin.

rsETH Hack Causes 68,900 ETH Shortfall; DeFi United Raises 13,500 ETH for Industry自救

According to on-chain analyst Ember (@EmberCN), the rsETH incident on April 18 resulted in a funding shortfall of approximately 68,900 ETH (around $160 million): the hacker collateralized rsETH to borrow 99,600 ETH; after Arbitrum recovered 30,700 ETH, the remaining funds were fully converted by the hacker into BTC. The incident has now entered the remediation phase. Aave is coordinating the establishment of a “DeFi United” relief fund, which has so far received cumulative donations totaling 13,500 ETH (approximately $31.45 million). Donors include Lido Finance (2,500 stETH), ether.fi Foundation (5,000 ETH), Aave founder Stani Kulechov (5,000 ETH), Golem Foundation (1,000 ETH), as well as LayerZero and Ink Foundation (amounts undisclosed).

KelpDAO hacker converted nearly all 75,700 ETH into BTC within 36 hours

According to on-chain analyst Yujin (@EmberCN), the KelpDAO hacker, over a period of approximately one and a half days, has converted nearly all 75,700 ETH (valued at roughly $175 million) on Ethereum into BTC—primarily via the cross-chain protocol THORChain. This money-laundering activity generated approximately $800 million in trading volume and $910,000 in platform fees for THORChain.

U.S. Navy Admiral States That Bitcoin’s PoW Technology Can Increase the Cost of Cyberattacks and Support National Security Strategy

According to Cointelegraph, Admiral Samuel Paparo of the U.S. Navy stated at a hearing before the Senate Armed Services Committee that Bitcoin is a “valuable computer science tool,” and that its proof-of-work technology holds significant applications in cybersecurity—increasing attackers’ costs and enabling the protection of data, information, and command signals, thereby supporting U.S. national security interests. Paparo noted: “Beyond the economic dimension, it has extremely important computer science applications in cybersecurity.” Earlier, in 2023, Jason Lowery of the U.S. Space Force expressed a similar view.

KelpDAO Hacker Has Cross-Chained Most ETH to BTC via THORChain

According to on-chain analyst Yu Jin, the KelpDAO hacker began laundering and transferring ETH yesterday afternoon, and by now should have laundered 34,500 ETH (worth $80 million).Most of this ETH was cross-chain swapped into BTC via THORChain, which consequently earned a significant amount in "toll fees":1. THORChain's trading volume surged to $360 million over the past 24 hours, compared to an average daily volume of only $20 million previously.2. THORChain's platform fee revenue reached $420,000 over the past 24 hours, whereas its daily fee income was only $5,000 before.

KelpDAO’s stolen funds have entered the laundering phase: part of the funds has been bridged across chains to the Bitcoin network via THORChain, and over 400 addresses have already been utilized.

According to on-chain analyst Specter (@SpecterAnalyst), the North Korean hacking group TraderTraitor began laundering stolen funds from KelpDAO at approximately 3 a.m. Beijing time today—just three hours after the Arbitrum Council froze 30.7 ETH (approximately $71 million). The attackers split the remaining funds across three wallets, holding roughly 25,000 ETH (~$57.6 million), 25,700 ETH (~$59.2 million), and 25,000 ETH (~$57.9 million), respectively. The third wallet immediately initiated laundering operations and now holds only about 3,800 ETH (~$8 million). The majority of the funds were bridged to the Bitcoin network via THORChain, with approximately 99% flowing through this protocol. As a result, THORChain’s daily trading volume surged to $211 million—more than ten times its 30-day average—and generated roughly $189,000 in fees. During this laundering process, the illicit proceeds were also commingled with funds stolen in the BTC Turk (2025) and Bybit (2025) hacks. To date, approximately 442 BTC (~$33 million) linked to these incidents have been traced on the Bitcoin network, and over 400 addresses have been utilized throughout the entire laundering operation.

ZachXBT: Funds related to the KelpDAO attack have begun cross-chain transfers to the Bitcoin network

On-chain investigator ZachXBT updated that funds related to the KelpDAO attack have begun moving: approximately $1.5 million has been cross-chained from Ethereum Mainnet to the Bitcoin network via Thorchain, and roughly $78,000 has been transferred via Umbra. The attacking address initially sourced its funds from Tornado Cash, and fund laundering and cross-chain transfers are ongoing.

0xSun: News-Driven Trading Still Holds Advantages, Currently Inclined to Long BTC and Hedge by Shorting Altcoins

Odaily News Trader 0xSun posted stating that news-driven trading remains one of the more cost-effective strategies in the current crypto market, with its core lying in the directionality and volatility brought by events.Reviewing several recent events, including abnormal ETH transactions, Arc fee adjustments, TAO ecosystem changes, RAVE-related investigations, and the KelpDAO security incident, all triggered significant price fluctuations within a short period. He believes that participating in such opportunities relies on either the speed of information acquisition or the ability to judge the impact of events.Furthermore, he indicated that as the recent altcoin market has gradually cooled down, he has resumed the strategy of going long on BTC while hedging by shorting some altcoin assets. He believes that against the backdrop of relatively weak liquidity and the fading of certain narratives, the overall performance of altcoins may face relatively more pressure.

The U.S. government transferred Bitcoin worth $606,470 to Coinbase Prime.

Arkham monitoring shows that a U.S. government address has just transferred $606,470 worth of Bitcoin to Coinbase Prime. This Bitcoin was previously seized by the U.S. government from Ilya Lichtenstein, the Bitfinex hacker. It remains unclear whether this batch of stolen Bitcoin will be sold on Coinbase.

The U.S. government deposited 8.2 BTC into Coinbase Prime, valued at approximately $606,000.

According to on-chain analytics platform Lookonchain (@lookonchain), the U.S. government deposited 8.2 BTC (approximately $606,000) into Coinbase Prime; these funds originated from assets previously seized in connection with the Bitfinex hack.

Adam Back Advocates Optional Quantum-Resistant Upgrades, Diverging from BIP-361’s Mandatory Freeze Proposal

According to Decrypt, Blockstream CEO Adam Back stated at Paris Blockchain Week that he supports advancing Bitcoin’s quantum resistance upgrade on an opt-in basis, opposing proposals to forcibly freeze quantum-vulnerable addresses. He emphasized that “preparation well in advance is far safer than scrambling to respond during a crisis,” and noted that the Bitcoin community possesses strong coordination capabilities to rapidly address critical vulnerabilities. Previously, developer Jameson Lopp and five others proposed BIP-361 (“Post-Quantum Migration and Legacy Signature Sunset”), which advocates phasing out quantum-vulnerable addresses over five years and ultimately freezing coins held in unmigrated addresses—including approximately 1.7 million bitcoins held by Satoshi Nakamoto.

Adam Back advocates for Bitcoin to promptly advance optional post-quantum upgrades and opposes pre-emptively freezing vulnerable addresses.

According to CoinDesk, Adam Back, CEO of Blockstream, stated at Paris Blockchain Week that Bitcoin developers should move forward early with optional post-quantum upgrades—even though practical quantum computers remain far from realization. He noted that Taproot’s flexible design supports integrating new post-quantum signature schemes without affecting existing users. Previously, Jameson Lopp and others proposed BIP-361, aiming to phase out quantum-vulnerable addresses over five years and freeze bitcoins in addresses that fail to complete the migration. Adam Back believes the Bitcoin community can rapidly coordinate a response in an emergency—without needing to predefine freezing arrangements.