Pith Number

pith:PXQ7XEWT

pith:2025:PXQ7XEWTSJSGPBTBOQVKCC46JN

not attested not anchored not stored refs pending

NMR-Solver: Automated Structure Elucidation via Large-Scale Spectral Matching and Physics-Guided Fragment Optimization

Fanjie Xu, Guolin Ke, Jun-Jie Wang, Linfeng Zhang, Rong Zhu, Weinan E, Xiaohong Ji, Yongqi Jin, Zhifeng Gao

arxiv:2509.00640 v1 · 2025-08-30 · physics.chem-ph · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PXQ7XEWTSJSGPBTBOQVKCC46JN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T12:02:20.000820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7de1fb92d39264678661742aa10b9e4b43eea7803ae72beeb7e2e994ccf6f559

Aliases

arxiv: 2509.00640 · arxiv_version: 2509.00640v1 · doi: 10.48550/arxiv.2509.00640 · pith_short_12: PXQ7XEWTSJSG · pith_short_16: PXQ7XEWTSJSGPBTB · pith_short_8: PXQ7XEWT

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/PXQ7XEWTSJSGPBTBOQVKCC46JN \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 7de1fb92d39264678661742aa10b9e4b43eea7803ae72beeb7e2e994ccf6f559

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f940dc88bc5ec90e5544cb793e8ebd090c29b0f8346d29c49575305ba1a759e0",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2025-08-30T23:59:12Z",
    "title_canon_sha256": "f25c261955e3dd467148025039f297831b0f0a995bc0fb1df378936b4359728a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.00640",
    "kind": "arxiv",
    "version": 1
  }
}