Tron post-quantum signatures live on Nile testnet, Sun says

Tron founder Justin Sun said on Saturday that the network’s post-quantum cryptography is now live on testnet, claiming the chain could shift to quantum-resistant security on mainnet whenever it chooses. “We’re ready to bring quantum resistance to mainnet at any time,” Sun wrote in a post on X, according to Cointelegraph.

He added that the team is tracking progress in quantum computing and AI, and wants Tron to be among the few major blockchains that are quantum-resistant before Q-Day — the point at which quantum machines become strong enough to break current security standards.

Also read: Europol Flags Crypto Wallet Keys as Quantum Computing Risk

Key facts

• Tron’s quantum-resistant signatures have been live on the Nile testnet since July 2, 2026, activated through Committee Proposal No. 20628 and the GreatVoyage-v4.8.2-PQ1-build1 release, per Cryptobriefing.
• Two NIST-standardized algorithms are involved: FN-DSA-512, built on Falcon-512, and ML-DSA-44, based on Dilithium, added shortly after FN-DSA-512 went live.
• The signatures reach transaction signing, block production, peer-to-peer handshakes between nodes, and smart contract verification inside the Tron Virtual Machine, according to Cryptobriefing.
• Mainnet activation still needs separate approvals from Tron’s governance bodies, and Tron’s original mainnet-readiness target of Q3 2026 has slipped to the end of 2026.
• FN-DSA-512 signatures can run to about 667 bytes, larger than the legacy ECDSA signatures used today — a cost paid in throughput and storage.

What is live, and what is not

Everything currently runs on the Nile testnet and stays opt-in, per Cryptobriefing. Tron mainnet functions are untouched for now, and existing wallets keep working as they always have. There is no requirement to move funds, rotate keys or change addresses to keep using the network.

That gap between testnet readiness and mainnet deployment is the crux of the story. Sun has framed the technology as ready; the governance step that would turn it on for real users has not been completed.

Also read: Banks and regulators join quantum-resistant crypto transfer pilot

The wider quantum push

Developers across the industry have been working on post-quantum cryptography because sufficiently powerful quantum computers may eventually break the elliptic-curve cryptography that secures Bitcoin, Ethereum and many other networks. Cointelegraph reported that Blockchain security company AmericanFortress unveiled a cryptographic plan to protect crypto wallets from future quantum attacks without requiring users to move funds, rotate keys or change wallet addresses, publishing the proposal in a technical paper on the Cryptography ePrint Archive that had not yet been peer-reviewed.

Earlier in 2026, a Strategy-led consortium pledged $15 million to fund Bitcoin quantum security research, the Ethereum Foundation published a proposal for migrating accounts to quantum-resistant cryptography, and Algorand outlined plans to introduce quantum-resistant accounts by 2027, according to Cointelegraph.

Why it matters

Tron processes hundreds of millions of transactions every month and holds tens of billions of dollars in stablecoin value, so a change to its signing layer touches a large base of users and issuers. Putting NIST-standardized post-quantum signatures into the protocol itself, rather than relying on an external add-on, places Tron among the early movers on end-to-end quantum resistance. The trade-off is size: larger signatures can affect throughput and storage costs, and the testnet exists to surface those problems before they reach production. An opt-in design also means protection only reaches users who actually adopt the new schemes.

What to watch

The immediate marker is governance: mainnet activation requires its own approvals, and Tron’s own stated goal is to complete the upgrade by the end of 2026, one quarter behind the original Q3 target. Watch for that approval vote and for any published results on how the larger signatures perform under load.

Reported by cointelegraph.com.

Sources: Cointelegraph, Cryptobriefing