Pith Number

pith:NW2WHZP3

pith:1997:NW2WHZP3CD4JY57EBIMAGCFEEF

not attested not anchored not stored refs pending

Tev Observations of the Variability and Spectrum of Markarian 421

A.C. Breslin, A. Hall, A.J. Rodgers, A.M. Burdett, A.M. Hillas, C. Masterson, D.A. Carter-Lewis, D.J . Fegan, F. Krennrich, F.W. Samuelson, G.H. Sembroski, G. Mohanty, H.J . Rose, I.H. Bond, J. Bussons~Gordo, J.E. McEnery, J. Gaidos, J.H. Buckley, J.P. Finley, J. Quinn, J. Zweerink, M. Catanese, M.F. Cawley, P.J. Boyle, P. Moriarty, R.C. Lamb, R. Srinivasan, R.W. Lessard, S.M. Bradbury, T.C. Weekes

arxiv:astro-ph/9706125 v1 · 1997-06-13 · 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{NW2WHZP3CD4JY57EBIMAGCFEEF}

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	2026-07-04T14:15:09.832910Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6db563e5fb10f89c77e40a180308a42144d05089636acf1fbbc93c3db4fa29bb

Aliases

arxiv: astro-ph/9706125 · arxiv_version: astro-ph/9706125v1 · doi: 10.48550/arxiv.astro-ph/9706125 · pith_short_12: NW2WHZP3CD4J · pith_short_16: NW2WHZP3CD4JY57E · pith_short_8: NW2WHZP3

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/NW2WHZP3CD4JY57EBIMAGCFEEF \
  | 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: 6db563e5fb10f89c77e40a180308a42144d05089636acf1fbbc93c3db4fa29bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dbc95cd9fcaf35aa78ba7ae4da978a8ae657a6d041ab52e9aaf2503aa64f35ac",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-06-13T00:28:04Z",
    "title_canon_sha256": "1cab7690a158bdae6d117ac0c3bc674c80aff7243ba9a08c5bfd751ecd17f427"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9706125",
    "kind": "arxiv",
    "version": 1
  }
}