Pith Number

pith:AIUFQQUK

pith:1997:AIUFQQUKPIG7U5GASUBBXYL5XB

not attested not anchored not stored refs pending

Analyzing X-ray variability by State Space Models

(2) Fakult\"at f\"ur Physik, Albert-Ludwigs-Universit\"at Freiburg, Germany, Germany), J. Timmer (2), M.K\"onig (1), R.Staubert (1) ((1) Institut f\"ur Astronomie und Astrophysik - Astronomie, Universit\"at T\"ubingen

arxiv:astro-ph/9704003 v1 · 1997-04-01 · 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{AIUFQQUKPIG7U5GASUBBXYL5XB}

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	2026-05-18T01:21:56.558333Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

022858428a7a0dfa74c095021be17db86366907269ef1b16e939a2a83a7e2d9b

Aliases

arxiv: astro-ph/9704003 · arxiv_version: astro-ph/9704003v1 · doi: 10.48550/arxiv.astro-ph/9704003 · pith_short_12: AIUFQQUKPIG7 · pith_short_16: AIUFQQUKPIG7U5GA · pith_short_8: AIUFQQUK

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/AIUFQQUKPIG7U5GASUBBXYL5XB \
  | 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: 022858428a7a0dfa74c095021be17db86366907269ef1b16e939a2a83a7e2d9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5beb8c0b6ed7eb0a65cbab3ca561e227ce72572b60585e4dbfbdb99a14e756e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-04-01T09:45:22Z",
    "title_canon_sha256": "aa1bdf5997abcbcd47c13608b5aa41e8e2217412f354074df9751db80b33962f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9704003",
    "kind": "arxiv",
    "version": 1
  }
}