Pith Number

pith:NQN4YQHL

pith:2026:NQN4YQHLFQPCKYCTPWXIGMXXSG

not attested not anchored not stored refs pending

Timing and Spectral Analysis of the 2024 Outburst of 2S 1553$-$542 with NuSTAR and NICER

Chenxu Gao, Haifan Zhu, Mariano Mendez, Pengfu Tian, Wei Wang, Wen Yang, Ziyi Xu

arxiv:2607.25548 v1 · 2026-07-28 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NQN4YQHLFQPCKYCTPWXIGMXXSG}

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	2026-07-29T01:25:46.299877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c1bcc40eb2c1e2560537dae8332f7918a642dc2f4492926a9c5a78cb0c42ed2

Aliases

arxiv: 2607.25548 · arxiv_version: 2607.25548v1 · doi: 10.48550/arxiv.2607.25548 · pith_short_12: NQN4YQHLFQPC · pith_short_16: NQN4YQHLFQPCKYCT · pith_short_8: NQN4YQHL

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/NQN4YQHLFQPCKYCTPWXIGMXXSG \
  | 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: 6c1bcc40eb2c1e2560537dae8332f7918a642dc2f4492926a9c5a78cb0c42ed2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b402ee82232caec4f25c823b28e4d57b949f10bbafba98455a76684728386b6b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-07-28T10:26:25Z",
    "title_canon_sha256": "fc4a9f30be733a6af56ae283c1133b8be45eb0c560e5f4ab585fe85bc3d9ad00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.25548",
    "kind": "arxiv",
    "version": 1
  }
}