Algorand has signed over 1 million post-quantum transactions on its mainnet, the foundation announced, outpacing other major Layer 1 blockchains in quantum-resistant transaction volume.
Post-quantum cryptography uses algorithms designed to resist attacks from quantum computers, which do not yet exist at scale but could theoretically break widely used encryption. Algorand's adoption of post-quantum signatures allows users to sign transactions with cryptographic keys that would remain secure even if quantum computing advances as predicted. The milestone comes as the Solana Foundation and others prepare blockchain infrastructure for a computing transition that industry officials expect in the next 10 to 15 years.
Solana deployed post-quantum transaction support on its testnet in December 2025 and has not yet brought the feature to mainnet. QoreChain, a smaller Layer 1, launched a mainnet post-quantum transaction capability in July 2026. Algorand's 1 million volume represents the largest quantity of quantum-resistant transactions processed by any major blockchain in live user conditions, according to the Coinbase Quantum Advisory Board assessment cited in the verification.
The transaction count carries no direct measure of user adoption or economic value. Post-quantum transactions on Algorand are currently optional for users and carry higher computational costs than standard transactions. The protocol began supporting the feature in a 2024 upgrade but adoption remained minimal until mid-2026, when several wallet and exchange operators integrated the capability and began routing some transactions through the quantum-resistant path.
Algorand has positioned quantum readiness as a core protocol feature since its 2019 launch. The foundation has argued that early adoption of post-quantum cryptography allows users to protect legacy transactions against future decryption attacks, a concern that applies to any long-lived digital asset or stored record. Bitcoin developers have debated similar upgrades but have not yet implemented post-quantum signature support on the mainnet, citing engineering complexity and the uncertainty around quantum timelines.
Algorand's quantum transaction volume grew from 250,000 in late August 2026 to over 1 million by early September. The foundation did not specify which wallet providers, exchanges, or developers drove the recent growth. Network activity data from Algorand's explorer could confirm the transaction count but does not indicate what portion of the network's daily volume these quantum-resistant transactions represent.
At 1 million quantum-resistant transactions, Algorand has processed roughly four times the testnet volume Solana published in March 2026. If Solana brings post-quantum support to mainnet within the next 12 months, the transaction volumes across Layer 1s would likely become comparable or favor Solana given its larger user base and daily throughput. The document to watch is Solana's next public update on its post-quantum roadmap, which will indicate whether the foundation is prioritizing quantum readiness for 2027 mainnet delivery.
