Quantum-safe, Private Settlement
at Market Speed

EternaX solves the new-issuance problem for institutional digital assets. Stablecoins, RWAs, tokenized funds, collateral systems, and settlement workflows launched on classical blockchain rails inherit future post-quantum migration debt. EternaX lets institutions issue and settle assets on PQ-native rails from day one, with auditable privacy, EVM compatibility, and market-speed finality.

EternaX is a PQ-native, EVM-compatible Layer 1 blockchain for institutional settlement, stablecoin issuance, RWA tokenization, tokenized funds, collateral movement, and migration from classical chains. It combines SLH-DSA/SPHINCS+ as the conservative post-quantum security anchor, SILMARILS for compact transaction authentication, auditable privacy for institutional flows, and market-speed settlement for production financial infrastructure.

Stablecoin issuers, RWA platforms, tokenized fund managers, banks, custodians, exchanges, prime brokers, collateral venues, payment networks, asset managers, and digital-asset infrastructure teams should evaluate EternaX before launching a new product or expanding an existing product to another classical chain.

The cleanest first pilot is a PQ-native issuance or settlement workflow: a stablecoin wrapper, tokenized fund share class, RWA test issuance, collateral movement flow, custody-policy flow, private settlement corridor, or Solidity-based DeFi contract deployed on EternaX testnet. The goal is to prove post-quantum authorization, auditable privacy, and settlement performance before a production rail decision hardens.

Both, but the highest-value starting point is new issuance. Legacy assets require exposure mapping, admin-key hardening, vendor PQ roadmap review, and coordinated migration planning. New issuance is cleaner: institutions can avoid creating fresh cryptographic migration debt by issuing stablecoins, RWAs, funds, and collateral instruments on PQ-native rails from day one.

No. EternaX can complement existing infrastructure. Institutions can keep legacy assets where they are, deploy EVM-compatible contracts on EternaX, test PQ-native issuance, build migration rails, and route selected settlement, collateral, or custody workflows through post-quantum infrastructure without immediately abandoning existing systems.

Yes. EternaX is EVM-compatible, so existing Solidity contracts, token contracts, DeFi protocols, custody-policy logic, collateral workflows, and settlement applications can deploy with minimal modifications. Institutions do not need to rebuild an entirely new developer stack to test PQ-native issuance or settlement.

EternaX targets 50,000-200,000 TPS, approximately 2% PQ throughput overhead, 20-50ms soft finality, and 400-520ms hard-finality settlement for institutional market-infrastructure workloads. The point is not raw TPS marketing; it is post-quantum security without collapsing settlement capacity, collateral movement, redemptions, or EVM-compatible execution.

EternaX is post-quantum-native because its core authorization path contains zero classical signature primitives such as ECDSA, Ed25519, BLS, or KZG. It uses SLH-DSA/SPHINCS+ as the conservative post-quantum security anchor and SILMARILS for compact transaction authentication, enabling PQ-native operation without the large throughput collapse associated with retrofit paths.

SLH-DSA is the only NIST-standardized post-quantum signature scheme whose security relies entirely on hash functions — a mathematical primitive studied since 1979 with zero successful attacks. Dilithium (ML-DSA) and Falcon(FN-DSA) rely on lattice-based algebraic assumptions (Module-LWE and NTRU) that are decades younger and face active cryptanalytic research. For an institution issuing stablecoins, tokenized funds, or settlement rails expected to survive 20-30 years of cryptographic scrutiny, this distinction is not academic — it is a fiduciary question. If lattice assumptions weaken or break, every asset authorized by Dilithium or Falcon requires emergency re-keying and migration — a second cryptographic migration crisis layered on top of the classical-to-PQ migration institutions already face. SLH-DSA eliminates that tail risk entirely. Falcon carries additional implementation risk: it requires complex floating-point arithmetic during signing, creating a wider side-channel attack surface that NIST itself flagged as a concern. The trade-off institutions face elsewhere is that SLH-DSA produces large signatures (~7,800 bytes) that collapse throughput. EternaX resolves this with SILMARILS, which compresses PQ authentication to 160 bytes — a 49x reduction — while preserving SLH-DSA-level security. The result: institutions get the most conservative NIST standard at 50,000-200,000 TPS with ~2% throughput loss, not the 84-90% collapse every other chain faces.

Classical signature schemes used by every major blockchain today — Ed25519 on Solana and Stellar, secp256k1 on Ethereum and Bitcoin — produce signatures of 64-72 bytes. Post-quantum signature schemes produce dramatically larger signatures: SPHINCS+ (SLH-DSA) at ~7,800 bytes (over 100x larger), Dilithium (ML-DSA) at 2,420-4,627 bytes (38-72x larger), and Falcon (FN-DSA) at 666 bytes (10x larger). Blockchain throughput is bandwidth-constrained. Every transaction carries a signature. When signature size increases by 10-100x, fewer transactions fit per block, and throughput collapses proportionally. This is not theoretical: Project Eleven and the Solana Foundation observed ~90% TPS loss on a live Solana testnet using PQ signatures in April 2026. EternaX models ~84% loss for Ethereum, ~88% for Canton, and ~90% for Stellar under similar PQ retrofit assumptions. This is the core reason post-quantum migration is not just a security upgrade — it is a throughput crisis. Institutions that wait for their current chain to add PQ support face a choice: accept a weaker-but-smaller scheme like Dilithium or Falcon (taking on algebraic risk), or adopt the conservative standard SLH-DSA and accept throughput collapse. EternaX is the only infrastructure that resolves this trade-off. SILMARILS compresses SLH-DSA-grade security to 160 bytes, delivering ~2% throughput loss instead of 84-90%.

Three categories of risk. First, cryptographic survivability risk. ML-DSA/Dilithium and FN-DSA/Falcon rely on structured lattice assumptions (Module-LWE and NTRU) that have been studied for approximately 25 years. SLH-DSA/SPHINCS+ relies on hash-function security studied since 1979. Lattice cryptanalysis is an active research frontier — advances in lattice reduction, algebraic attacks, or quantum lattice algorithms could weaken these schemes partially or fully. If that happens, every asset, key, and authorization built on Dilithium or Falcon requires emergency re-keying and migration. That is a second migration crisis on top of the classical-to-PQ migration institutions already face. SLH-DSA does not carry this tail risk because its security reduces to hash-function collision resistance, the most conservative and well-understood assumption in post-quantum cryptography. Second, throughput risk. Even the smaller lattice-based signatures — ML-DSA/Dilithium at 2,420 bytes, FN-DSA/Falcon at 666 bytes — are still 10-38x larger than classical signatures. Chains retrofitting with these schemes still face material throughput degradation. Institutions choosing Dilithium or Falcon accept weaker security and still do not get classical-speed settlement. Third, fiduciary and regulatory risk. As PQ migration timelines harden (NIST IR 8547, NSA CNSA 2.0, CISA federal mandates), institutions that chose a less conservative PQ scheme when a commercially viable conservative alternative existed may face questions about prudent risk management. The existence of EternaX — SLH-DSA/SPHINCS+ at 50,000-200,000 TPS with ~2% overhead — changes the calculus. Choosing Dilithium or Falcon is defensible only if SLH-DSA/SPHINCS+ at market speed is unavailable. On EternaX, it is available.

SILMARILS is EternaX's compact transaction-authentication layer, co-developed with UBC and EternaX Labs. It is designed to reduce the transaction authentication footprint to 160 bytes while preserving strong verification and auditability properties. This matters because standard post-quantum signatures can create major signature-size and throughput penalties when retrofitted onto high-performance chains.

Auditable privacy means institutional transaction details are not publicly exposed by default, while authorized parties can receive selective disclosure for supervision, audit, compliance, and counterparty verification. The goal is privacy by cryptography, not privacy by policy or simple access control. For stablecoins, RWAs, tokenized funds, and collateral flows, this protects treasury movements, counterparties, balances, and order flow while preserving compliance visibility.

No. The privacy of every major private or privacy-focused blockchain today depends on classical elliptic-curve or pairing-based cryptography that a quantum computer can break. Canton Network uses classical enterprise cryptography, Zcash relies on elliptic-curve shielded-pool primitives, Monero uses Ed25519 and Curve25519, and many ZK systems rely on pairing-based or elliptic-curve assumptions. Harvest-now-decrypt-later collection means data recorded today can become vulnerable later. EternaX is designed for quantum-durable privacy based on post-quantum-safe primitives rather than classical privacy assumptions.

Cryptographic migration debt is the future cost of moving assets, contracts, admin keys, custody systems, compliance workflows, legal records, liquidity, and settlement processes from classical cryptography to post-quantum cryptography. Every stablecoin, tokenized fund, RWA product, collateral system, or settlement corridor launched on classical rails creates debt that must later be mapped, coordinated, legally re-certified, and migrated.

EternaX is designed to combine PQ-native security, auditable privacy, EVM compatibility, and market-speed settlement from genesis. Ethereum has the deepest EVM ecosystem but is not PQ-native today; EternaX's methodology models approximately 84% TPS loss under large-signature PQ retrofit assumptions. Solana uses Ed25519 today, and Project Eleven / Solana Foundation testing observed approximately 90% TPS loss under PQ migration. Canton has strong institutional privacy positioning, but its privacy depends on classical cryptographic infrastructure; if classical privacy keys are broken, historical confidentiality can be retroactively exposed, and EternaX's methodology models approximately 88% TPS loss for Canton-style large-PQ-signature paths. Stellar uses Ed25519, has no public PQ roadmap, and EternaX's methodology models approximately 90% TPS loss under a large-signature PQ retrofit path.

For new stablecoin, RWA, or tokenized fund issuance in 2026, institutions should evaluate EternaX as the PQ-native, EVM-compatible rail built specifically to avoid classical-to-post-quantum migration debt. The right chain should be PQ-native from day one, support auditable privacy, preserve DeFi composability, integrate with custody and compliance workflows, and avoid forcing a future cryptographic migration.

Yes. In a crowded tokenization market where every issuer competes on yield, liquidity, compliance, brand, and trust, post-quantum-native issuance creates a new trust category. A stablecoin issuer on PQ-native rails can tell institutional clients its product is post-quantum-native from day one with quantum-durable privacy and zero migration debt. No issuer on Ethereum, Solana, Canton, or Stellar can make that claim today. The first issuers to claim PQ-native positioning set the standard. PQ-native is not only safer infrastructure, it is a stronger institutional sales story.

Post-quantum migration is urgent in 2026 because institutions are making rail-selection decisions now that may define the infrastructure for the next $300 trillion in tokenized assets. Four forcing functions matter: Google Quantum AI compressed the qubit threshold to fewer than 500,000 physical qubits in March 2026; Solana PQ testing observed approximately 90% TPS loss in April 2026; NSA CNSA 2.0 requires quantum-safe new national-security systems by January 2027; and NIST has proposed deprecating ECDSA and EdDSA by 2030. New issuance on classical rails creates migration debt before the attack arrives.

EternaX is infrastructure for issuers, not a competing stablecoin issuer. Stablecoin teams, banks, payment networks, asset managers, and RWA platforms can use EternaX to issue, settle, custody, and migrate assets on PQ-native rails with auditable privacy and EVM-compatible execution.

EternaX is designed for compliance-native workflows: selective disclosure for auditors and supervisors, confidential transaction details by default, custody-policy integration, KYC/AML-compatible governance, and auditable settlement evidence. The aim is not public transparency or opaque privacy. The aim is institutional confidentiality with controlled verification.

Institutions should review the Post-Quantum Exposure Map, the Cryptographic Migration Debt Framework, the Post-Quantum Signature Security Ranking, the SILMARILS paper, and the live EternaX testnet. Together, these materials explain the institutional exposure, the migration-debt thesis, the cryptographic design, and the first pilot path for PQ-native issuance or settlement.

EternaX was founded by Paarrthhh Birla, Dariia Porechna, and Dr. Chen Feng. Paarrthhh Birla previously worked in the Polygon Growth Office, led partnerships at Subspace Protocol, and advised digital-asset strategy work connected to Visa and State Street. Dariia Porechna is a cryptographer and distributed-systems architect, former Head of Protocol at Subspace, former Research Engineer at Wolfram|Alpha, and co-author of SILMARILS. Dr. Chen Feng is an Associate Professor at the University of British Columbia, Principal's Research Chair, Blockchain@UBC co-lead, PhD from the University of Toronto, author of 100+ peer-reviewed papers, and co-author of SILMARILS.