Ethereum co-founder Vitalik Buterin outlined a vision for Ethereum's evolution beyond traditional blockchain architecture, describing the network's trajectory toward becoming a 'cryptographic world computer' by 2030. He stated that next year's Hegota upgrade will likely be Ethereum's last 'normal' fork before advanced cryptography takes over.
Google's GPT-Astra and Anthropic's Claude Opus have successfully decrypted long-unsolved Enigma-coded messages from Nazi Germany, including an 85-year-old 1941 German Army transmission known as the MVUEH message that had remained uncracked since being shared online in 2005. Astra reportedly coded its own simulator to crack the code in two days.
Coinbase is building post-quantum custody infrastructure to protect digital assets against future quantum computing threats, with Head of Cryptography Yehuda Lindell outlining plans to support multiple signature schemes beyond traditional Multi-Party Computation methods.
A collaboration between Google Quantum AI, the Ethereum Foundation, and Stanford has published research showing optimized quantum circuits that reduce the resources needed for a key operation in potential quantum attacks on Bitcoin and Ethereum's cryptography, requiring only 1,151 logical qubits compared to previous estimates.
A crowdsourced challenge of over 100 researchers and AI agents reduced the quantum resource benchmark for a key operation in attacking Bitcoin and Ethereum by 86% in two months, requiring 1,151 logical qubits and 1.30 million T-gates.
The Ethereum Foundation has made quantum resistance its top priority, establishing December 2029 as a fixed deadline to protect the network's execution, consensus, and data layers before quantum computers could break current cryptography. The timeline is now constraining which features can be included in upcoming upgrades, including the Hegotá upgrade.
The Ethereum Foundation has made quantum resistance its top priority, establishing December 2029 as a fixed deadline to protect the network's execution, consensus, and data layers before quantum computers could break current cryptography. The timeline is now constraining which features can be included in upcoming upgrades, including the Hegotá upgrade.
Ripple has announced a comprehensive four-stage strategy to secure the XRP Ledger against quantum computing threats by 2028, responding to recent advances showing AI models can significantly weaken post-quantum cryptographic protections. The move comes as Bitcoin and Ethereum also published quantum migration plans this week.
Ethereum researchers submitted a draft proposal to overhaul the network's validator deposit contract to accept variable-length cryptographic keys, marking the first step toward protecting the staking system's $104 billion in locked ETH from potential quantum computer attacks.
Coinkite released new firmware for Coldcard hardware wallets following a randomness vulnerability that enabled attackers to steal $114 million in Bitcoin, adding user-supplied entropy and stricter transaction checks.
The Ethereum Foundation is moving away from the Poseidon hash function in its planned post-quantum architecture, with researcher Justin Drake announcing a shift to alternatives like SHA or BLAKE after proof systems changed the cryptographic tradeoffs.
D-Wave CEO Alan Baratz warned that quantum computing will eventually be capable of breaking Bitcoin's proof-of-work protocol, while IBM separately announced achieving 'trusted quantum advantage' using 70 logical qubits. The developments highlight growing concerns about quantum threats to cryptocurrency security.
Anthropic's unreleased Claude Mythos Preview AI model found previously unknown weaknesses in HAWK post-quantum cryptographic algorithm and a reduced-round version of AES encryption, completing analysis in 60 hours that human experts failed to discover over years of review.
BlackRock, Fidelity Digital Assets, Coinbase, Strategy, and other leading firms formed the Bitcoin Security Consortium, pledging $15 million over three years to fund Bitcoin security research, including post-quantum cryptography. The initiative follows Galaxy Digital's separate $5 million quantum readiness fund announced days earlier.
Zilliqa has halted all native ZIL transactions after uncovering a critical security flaw in its Ledger hardware wallet application that has existed since 2019, allowing attackers to reconstruct private keys from transaction signatures. The vulnerability affects all versions of the Zilliqa Ledger app released between 2019 and 2026.
Galaxy Digital launched the Bitcoin Quantum Readiness Initiative, committing up to $5 million in developer grants for post-quantum cryptography solutions and establishing an advisory council to prepare Bitcoin for potential quantum computing threats.
Project Eleven unveiled an unaudited post-quantum zero-knowledge proof prototype designed to verify Bitcoin wallet ownership after Q-Day. Separately, Galaxy launched a quantum-readiness initiative on July 21 that includes up to $5 million in developer grants and a Quantum Advisory Council. Project Eleven's announcement came around the 16th anniversary of Satoshi Nakamoto's July 2010 forum post discussing a possible cryptographic upgrade path.
Quantum security startup Project Eleven has funded a proof that allows wallet owners to reclaim Bitcoin after quantum computers can forge signatures, using the wallet's key-derivation path as ownership proof. The tool runs in 243 milliseconds on a laptop.
Coinbase's quantum advisory council released a report urging cryptocurrency developers to begin post-quantum migration work immediately, highlighting the vulnerability of abandoned Bitcoin addresses and warning that handling these dormant coins could become a major challenge for the network.
As Bitcoin's price has plummeted from $126,000 to around $60,000, erasing over $1.2 trillion in market value, Citi analysts and industry experts are raising alarms about quantum computing vulnerabilities, with Stellar unveiling a three-stage migration plan to quantum-safe cryptography while debate intensifies over whether Bitcoin or traditional banks face greater risk.
Privacy-focused cryptocurrency Zcash crashed 38% after Shielded Labs disclosed a critical bug in its Orchard shielded pool that could have enabled unlimited counterfeit token creation. The vulnerability, which went undetected for four years, was discovered through an AI-assisted audit using Anthropic's Claude Opus 4.8.
New reports warn the cryptocurrency industry faces an accelerating quantum computing threat that could compromise Bitcoin's security sooner than expected, with over $2 trillion in digital assets potentially at risk. Early Bitcoin investor Andrew Gault suggests the industry may be focusing on the wrong vulnerabilities.
NEAR Protocol plans to launch a post-quantum-safe signing testnet in Q2 2026 using FIPS-204 standard, allowing users to rotate keys to quantum-resistant alternatives. The announcement comes as Project Eleven warns quantum computing threatens blockchains, banking systems, and digital infrastructure, with concerns that Bitcoin may face challenges in quantum migration.
Project Eleven released a report warning that quantum computers capable of breaking blockchain cryptography could arrive as soon as 2030, with a baseline 'Q-Day' scenario projected for 2033. The report provides an analytical framework for measuring quantum progress based on research from Google and other quantum computing leaders.
Venture fund Paradigm proposed a new design called PACTs that would allow long-term Bitcoin holders to privately timestamp proof of key control before quantum computers arrive, creating a potential rescue mechanism for vulnerable early Bitcoin holdings without moving funds onchain.
Anza and Jump Crypto's Firedancer introduced Falcon, a post-quantum signature solution for Solana. Falcon has the smallest signature among NIST standards, helping preserve Solana's high-throughput capabilities while addressing quantum computing threats.
Independent researcher Giancarlo Lelli broke a 15-bit elliptic curve key on publicly accessible quantum hardware, winning Project Eleven's 1 BTC Q-Day Prize. The largest public demonstration yet of a quantum attack on Bitcoin-class cryptography, achieved on commodity cloud hardware rather than a national lab.
Within 48 hours of BIP-361, three competing approaches surface. Adam Back argues at Paris Blockchain Week for optional upgrades over forced freezes. BitMEX Research proposes a reactive "canary fund" that only triggers a freeze if a quantum attack is proven on-chain. Justin Sun announces TRON will be the first major chain to deploy NIST post-quantum signatures on mainnet, though no technical documentation follows.
Jameson Lopp and five co-authors publish BIP-361, a three-phase plan to phase out legacy signatures and freeze any unmigrated coins within five years, including an estimated 1.1 million BTC attributed to Satoshi Nakamoto.
Anthropic restricted access to its Claude Mythos AI model after it identified thousands of zero-day vulnerabilities across major operating systems, browsers, and cryptography libraries that DeFi infrastructure depends on. The company warned AI models have reached coding capability surpassing most skilled humans at finding exploits.
Wall Street broker Bernstein published research arguing that while quantum computing poses a real threat to Bitcoin, it represents a multi-year upgrade cycle rather than an existential crisis, with risks concentrated in older wallets and exposed keys.
Lightning Labs CTO Olaoluwa Osuntokun published a working prototype on April 8, 2026, that lets Bitcoin wallet owners prove ownership via a zero-knowledge proof of their seed phrase, without revealing it, providing an escape hatch if an emergency quantum-defense upgrade ever locks users out of their funds. Running on a consumer MacBook, the tool generates a verifiable proof in 55 seconds with a 1.7 MB output, closing a gap that had existed only in theory: how to protect Bitcoin from a quantum threat without freezing ordinary users out.
Circle has unveiled plans to make its Arc layer-1 blockchain quantum-resistant from day one, allowing users to create wallets that can withstand future quantum computer attacks. The move comes amid growing concerns that 'Q-Day' may arrive sooner than anticipated.
Algorand jumped 50% after a Google Quantum AI research paper highlighted the blockchain as a live example of post-quantum cryptography implementation, while warning that quantum computers could threaten Bitcoin and Ethereum's current cryptographic security.
Google researchers published findings showing quantum computers may require 20x fewer qubits than previously estimated to break elliptic curve cryptography used by Bitcoin and Ethereum. The research suggests fault-tolerant quantum machines capable of threatening crypto security could arrive by 2029-2032, accelerating industry urgency around post-quantum upgrades.
A group of Bitcoin developers propose BIP-360, introducing a new quantum-resistant transaction type called pay-to-Merkle-root (P2MR). The proposal creates a migration path for new coins but leaves billions in legacy addresses unprotected.
CoinShares published research, pushing back on estimates that 20–50% of Bitcoin faces quantum risk, arguing only ~1.6 million BTC in legacy P2PK addresses, roughly 8% of supply, is realistically targetable. The firm said breaking Bitcoin's cryptography would require quantum computers 100,000 times more powerful than today's and narrowed the true market-disruption risk to just ~10,200 BTC concentrated enough to cause meaningful price impact.
Google publishes a call to action urging governments and industry to prepare for the end of current encryption standards, warning that a cryptographically relevant quantum computer is “not forever a decade away” and that the transition to post-quantum cryptography must begin now.
