QRL, the first fully post-quantum secure blockchain ledger, launched its mainnet in June 2018 using XMSS signatures to counter quantum computing threats. Current circulating supply is ~70.94M tokens, ATH $4.17, and it is transitioning from PoW to PoS.

Quantum Resistant Ledger positions itself as a post-quantum secure blockchain, using XMSS hash-based signatures instead of ECDSA. Its all-time high stands at 4.17, with 70.94 million QRL in circulation and a capped supply of 105 million.

Quantum Resistant Ledger positions itself as a post-quantum secure blockchain using XMSS instead of ECDSA. Project information says the mainnet launched in June 2018, with 70.94 million QRL in circulation, a 105 million maximum supply, and an all-time high price of 4.17.

NVIDIA announces open-source Ising model series using agent AI for quantum computing error correction, sparking interest in quantum-focused altcoins.

NVIDIA AI announced the open-source Ising model series to advance quantum computing with agent AI, focusing on real-time error correction. This sparks growing interest in quantum-focused altcoins, signaling potential shifts in crypto security and investment.

Rapid advances in quantum computing are raising concerns over crypto wallet security, as most wallets still rely on ECC. While NIST has released post-quantum standards, adoption across wallets and blockchains remains slow, leaving exposed public keys and historical transactions at risk.

A MarsBit analysis argues that quantum computing is unlikely to erase blockchains overnight, but it could trigger a long, systemic rewrite of crypto security assumptions. The piece frames the main risk around “Q-Day,” the point at which a cryptographically relevant fault-tolerant quantum computer becomes capable of breaking mainstream public-key cryptography in practice. Current estimates place that window mostly around 2035–2045, with more aggressive scenarios suggesting 2030–2035. The report says the real issue is not the absence of post-quantum cryptography, but whether the crypto industry can coordinate migration before attacks become economically viable. Bitcoin’s challenge is concentrated in exposed public keys, dormant legacy UTXOs, signature bloat, and governance conflict over how to treat coins that never migrate. Ethereum, by contrast, faces a broader full-stack transition involving EOAs, validator signatures, KZG commitments, data availability, and parts of the ZK stack. The article concludes that post-quantum migration is fundamentally a coordination and governance problem, not a simple cryptographic swap. For markets, repricing may begin well before Q-Day itself if hardware roadmaps accelerate, resource estimates fall, or regulators and custodians start demanding PQC compliance.

Google's quantum paper warns Bitcoin and Ethereum face quantum attack risks, while Algorand jumps 50% as a live post-quantum cryptography example. Analysis covers migration challenges and Algorand's head start.