Pith Number

pith:5HSPY6QQ

pith:1998:5HSPY6QQEMMTBZZNGNZUS24HN5

not attested not anchored not stored refs pending

The flat X-ray spectrum of the LINER NGC1052

ESTEC, I), L.A.Antonelli (2) ((1) SSD of ESA, M.Guainazzi (1), NL; (2) Osservatorio Astronomico di Roma, Noordwijk

arxiv:astro-ph/9812385 v1 · 1998-12-21 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5HSPY6QQEMMTBZZNGNZUS24HN5}

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	2026-07-04T16:07:23.529484Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9e4fc7a10231930e72d3373496b876f675a663a599a962f98a385689e0de199

Aliases

arxiv: astro-ph/9812385 · arxiv_version: astro-ph/9812385v1 · doi: 10.48550/arxiv.astro-ph/9812385 · pith_short_12: 5HSPY6QQEMMT · pith_short_16: 5HSPY6QQEMMTBZZN · pith_short_8: 5HSPY6QQ

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/5HSPY6QQEMMTBZZNGNZUS24HN5 \
  | 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: e9e4fc7a10231930e72d3373496b876f675a663a599a962f98a385689e0de199

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2645ccb2c15e4b8e6f0a08eab9e855dbbf68b4ec2d290a2d8c3991caaa848d31",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-12-21T13:32:59Z",
    "title_canon_sha256": "202ac109c3eb6f931c50e3b2929d01c5d9fc39f4f7b62141a5026fa5635c100d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9812385",
    "kind": "arxiv",
    "version": 1
  }
}