Pith Number

pith:X5RJMSRM

pith:1999:X5RJMSRM5IAWQZBS4WV7J3WSXA

not attested not anchored not stored refs pending

Hour-Scale Multiwavelength Variability in Markarian 421

A.C. Breslin, A. Celotti, A.M. Burdett, A.M. Hillas, A. Treves, C. Masterson, D.A. Carter-Lewis, D. Horan, D.J. Fegan, E. Pian, F. Krennrich, F. Tavecchio, F.W. Samuelson, G. Fossati, G. Ghisellini, G.H. Sembroski, G. Tagliaferri, H.J. Rose, I.H. Bond, J.A. Gaidos, J.H. Buckley, J. Knapp, J.P. Finley, J. Quinn, L. Chiappetti, L. Maraschi, M. Catanese, M. D'Vali, M.F. Cawley, P. Grandi, P. Moriarty, R.W. Lessard, S. Dunlea, S.J. Fegan, S. Le Bohec, S.M. Bradbury, T.A. Hall, T.C. Weekes, V.V. Vassiliev

arxiv:astro-ph/9906209 v1 · 1999-06-11 · 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{X5RJMSRM5IAWQZBS4WV7J3WSXA}

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	2026-07-04T14:16:47.661216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf62964a2cea01686432e5abf4eed2b81a6ca6921f0abc59d5f9a994d3ca6559

Aliases

arxiv: astro-ph/9906209 · arxiv_version: astro-ph/9906209v1 · doi: 10.48550/arxiv.astro-ph/9906209 · pith_short_12: X5RJMSRM5IAW · pith_short_16: X5RJMSRM5IAWQZBS · pith_short_8: X5RJMSRM

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/X5RJMSRM5IAWQZBS4WV7J3WSXA \
  | 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: bf62964a2cea01686432e5abf4eed2b81a6ca6921f0abc59d5f9a994d3ca6559

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3c855d774af421b462a2e9fbf11ad4b50c1f23d535dffce770cb19cfbfff32a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-06-11T21:15:15Z",
    "title_canon_sha256": "2a9bc14dfe8ecbb86c82a00d93440deb79b86c8bd2641cf6b116163bcbe8d856"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9906209",
    "kind": "arxiv",
    "version": 1
  }
}