Tron Pledges a Post-Quantum Mainnet as the Incumbent Race Accelerates

Justin Sun said Tron will put NIST post-quantum signatures on mainnet, targeting a Q2 2026 testnet and Q3 2026 mainnet, and billed it as the "first major public blockchain" to do so. As of mid-April it was only an announcement, with no formal on-chain proposal or technical spec, and the "world's first" claim overlooks QRL, post-quantum since 2018. Others are moving too: Solana has PQ signatures on testnet, and Coinbase formed a quantum advisory board in January. The race shows both the urgency and the difficulty of retrofitting a live chain with millions of legacy addresses. (Update: the testnet pledge was delivered on June 30; see above.)