Pith Number

pith:O7K4MUSW

pith:2001:O7K4MUSWHVHLCEINP3YAZC33BS

not attested not anchored not stored refs pending

Cutoff in the TeV Energy Spectrum of Markarian 421 During Strong Flares in 2001

A.M. Hillas, B. McKernan, D.A. Carter-Lewis, D. Das, D. Horan, D.J. Fegan, D. Kieda, D. M\"uller, D. Petry, F. Krennrich, G.H. Gillanders, G.H. Sembroski, H.J. Rose, H.M. Badran, I. de la Calle Perez, I.H. Bond, J.A. Gaidos, J.H. Buckley, J. Holder, J. Kildea, J. Knapp, J.P. Finley, J. Quinn, K. Gibbs, K. Kosack, M. Catanese, M.J. Lang, M. Jordan, M. Kertzman, N. Stanton, N.W. Reay, P. Moriarty, P.T. Reynolds, R. Ong, R. Pallassini, R. Sidwell, S. Dunlea, S.J. Fegan, S. LeBohec, S.M. Bradbury, S.P. Swordy, S.P. Wakely, T.A. Hall, T.C. Weekes, V.V. Vassiliev, W. Cui

arxiv:astro-ph/0107113 v1 · 2001-07-05 · 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{O7K4MUSWHVHLCEINP3YAZC33BS}

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	2026-07-04T16:23:40.093401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77d5c652563d4eb1110d7ef00c8b7b0c91706df541063d0307453d5177d18314

Aliases

arxiv: astro-ph/0107113 · arxiv_version: astro-ph/0107113v1 · doi: 10.48550/arxiv.astro-ph/0107113 · pith_short_12: O7K4MUSWHVHL · pith_short_16: O7K4MUSWHVHLCEIN · pith_short_8: O7K4MUSW

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/O7K4MUSWHVHLCEINP3YAZC33BS \
  | 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: 77d5c652563d4eb1110d7ef00c8b7b0c91706df541063d0307453d5177d18314

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96022ade593f1f289af59fa14a0ec4e8d55d1d3c408be44bd85d06697e4550fd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-05T22:04:11Z",
    "title_canon_sha256": "4538dd67033e9d4fba1c2b048cc3f27c6419ecb40f84f4f139a2d59d367a68e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107113",
    "kind": "arxiv",
    "version": 1
  }
}