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Seal structurally valid · PQC signatures missing or unverified
Hash chain verified, but PQC signature verification did not pass. This may be expected for benchmark archive seals (PQC pre-signing limited to interactive seals in Phase 3).

Seal identity

Seal ID
HSCALE-BENCH-CUQ-PHI-ANSATZ-28Q-12L-1777346369
Scope
cuquantum_phi_ansatz · 28q · 4096 shots · GPU statevector · NVIDIA GeForce RTX 5090 Laptop GPU — SIMULATION, not hardware
Issuing agent
EpochCore benchmark campaign
Issued at
2026-04-28T03:19:29.999898+00:00 · Tue, 28 Apr 2026 03:19:29 GMT
RAS Root
40668c787c463ca5
Genesis Seal
437EC394E97ACCE9

Hash chain

519efda1b903c33545e74c12e1d0b47d8d53503e0959983ccb559a04484660ea
→
HSCALE-BENCH-CUQ-PHI-ANSATZ-28Q-12L-1777346369
BLAKE3
d470da1de0db8027cb4ec543a39682ceaed0482f5bc1f36ed325235e56357b94
SHA3-512
f17e610191c7c1bef4fbb1a769d211d29d1f896714b715c95f953b65aa678008

Triple-signature provenance

Ed25519 (classical) structurally valid
Public key: ed25519:GJFdNhb8CgAiNjet45Td/tCglLue4U9pOqu25h3geYE=
sPrAR2Lg3QZlINWwJffeZhHXITIRnYgK6YY5Sho1K4yaozQRjYTZkUKa/vvoCwfNdV+mb208c6FUhLIyO+MaBg==
ML-DSA-65 (NIST FIPS 204 lattice PQC) no signature (archive)
Module-Lattice-Based Digital Signature Algorithm — quantum-resistant via lattice problem hardness (CRYSTALS-Dilithium). Verification deferred for archival benchmark seals.
ML-DSA-65 signature payload — 4627 bytes
SLH-DSA-SHA2-128f (NIST FIPS 205 hash-based PQC) no signature (archive)
Stateless Hash-Based Digital Signature Algorithm — quantum-resistant via hash function preimage hardness (SPHINCS+). Verification deferred for archival benchmark seals.
SLH-DSA-SHA2-128f signature payload — 0 bytes

Base L2 on-chain anchor

Chain ID
0 (Base mainnet)
Block height
0
Anchor TX
View on Basescan ↗

Sealed payload (summary)

cuquantum_phi_ansatz on GPU statevector · NVIDIA GeForce RTX 5090 Laptop GPU — SIMULATION, not hardware. 28 measured qubits, 4096 shots, transpiled depth 12. No IBM job id: this run did not execute on hardware. Measured: layers 12 · distinct 4096 · top 0111101110101011001001011001 @ 0.000244. Receipt receipt_cuquantum_28q_12L_1777346370.json, sha256 d470da1de0db8027cb4ec543a39682ceaed0482f5bc1f36ed325235e56357b94. Ed25519 signature is over the 32-byte hex-decoded seal_hash and verifies against the published key; ML-DSA-87 present. Not anchored to an L2 chain — this is a signed archive receipt, not an on-chain record.

Programmatic API

Need machine-readable verification? Use the JSON API:
GET
https://epochcoreqcs.com/api/verify/HSCALE-BENCH-CUQ-PHI-ANSATZ-28Q-12L-1777346369
Returns full seal envelope + verification status as application/json. CORS-enabled. Public.