Pith Number

pith:OJ3S5HRX

pith:1999:OJ3S5HRX5MOD6ANXOSNMGPWDU7

not attested not anchored not stored refs pending

The Flux Variability of Markarian 501 in Very High Energy Gamma Rays

A. C. Breslin, 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, H. J. Rose, I. H. Bond, J. A. Gaidos, J. Bussons Gordo, J. E. McEnery, J. H. Buckley, J. P. Finley, J. Quinn, M. Catanese, M. F. Cawley, P. J. Boyle, P. Moriarty, R. C. Lamb, R. Srinivasan, R. W. Lessard, S. M. Bradbury, T. C. Weekes, T. Hall, V. V. Vassiliev

arxiv:astro-ph/9903088 v1 · 1999-03-05 · 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{OJ3S5HRX5MOD6ANXOSNMGPWDU7}

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	2026-07-04T16:10:46.262148Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72772e9e37eb1c3f01b7749ac33ec3a7e86205b9be1a081d8031e527e4ef2620

Aliases

arxiv: astro-ph/9903088 · arxiv_version: astro-ph/9903088v1 · doi: 10.48550/arxiv.astro-ph/9903088 · pith_short_12: OJ3S5HRX5MOD · pith_short_16: OJ3S5HRX5MOD6ANX · pith_short_8: OJ3S5HRX

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/OJ3S5HRX5MOD6ANXOSNMGPWDU7 \
  | 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: 72772e9e37eb1c3f01b7749ac33ec3a7e86205b9be1a081d8031e527e4ef2620

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6e196052f06d156f5e13fca7692d138d3ce7bb7a0ba55c81bba4b23cdd4cb36",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-03-05T15:15:09Z",
    "title_canon_sha256": "44c51050c3c7ee9412add67184b3ceadbbf7d000cba5a93bc30c39c5b12e42e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9903088",
    "kind": "arxiv",
    "version": 1
  }
}