Algorand (ALGO) surged after a white paper by Google Quantum AI was released, blockchain outlet CoinPost reported on April 4. Algorand rose about 16 percent over 24 hours on CoinGecko, and its gain over the past week topped 44 percent.

Behind the rise was “Securing Elliptic Curve Cryptocurrencies against Quantum Vulnerabilities,” released by Google on March 30. The paper presented a new estimate that the quantum resources needed to break 256-bit elliptic curve cryptography (ECDSA) could be reduced to 1,200 to 1,450 logical qubits.

Google pointed to Algorand as a case in which post-quantum cryptography (PQC) has been actually deployed on a quantum-vulnerable blockchain. It said the lattice-based signature scheme Falcon was applied to smart transactions and state proofs, and specified that PQC-protected transactions were also executed in 2025.

Google also mentioned a rekey function that allows account secret keys to be changed. It assessed the feature as a design that takes a future transition to PQC into account.

Concerns about quantum risk also grew. Project Eleven, based on Google technical data, analysed that a quantum computer could theoretically decrypt a Bitcoin secret key within 9 minutes. It also offered an estimate that about 6.7 million BTC are currently vulnerable to quantum attacks. Google also mentioned Solana and XRP Ledger in the paper as blockchains pursuing experimental implementations of quantum-resistant cryptography.