Pith Number

pith:5ZX2KZHL

pith:2006:5ZX2KZHLTZ7O6PGTARTQ5TI4GR

not attested not anchored not stored refs pending

The Energy Spectrum of the Blazar Markarian 421 Above 130 GeV

A. Jarvis, C. E. Covault, C. Mueller, D. A. Bramel, D. A. Williams, D. Driscoll, D. M. Gingrich, D. S. Hanna, J. Ball, J.E. Carson, J. Kildea, J. Zweerink, K. Ragan, P. Fortin, R. A. Ong, R. A. Scalzo, R. Mukherjee, T. Lindner

arxiv:astro-ph/0612562 v1 · 2006-12-19 · 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{5ZX2KZHLTZ7O6PGTARTQ5TI4GR}

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	2026-07-04T15:21:50.888715Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee6fa564eb9e7eef3cd304670ecd1c346836f143f05728c8a693a609ce2a3f2b

Aliases

arxiv: astro-ph/0612562 · arxiv_version: astro-ph/0612562v1 · doi: 10.48550/arxiv.astro-ph/0612562 · pith_short_12: 5ZX2KZHLTZ7O · pith_short_16: 5ZX2KZHLTZ7O6PGT · pith_short_8: 5ZX2KZHL

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/5ZX2KZHLTZ7O6PGTARTQ5TI4GR \
  | 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: ee6fa564eb9e7eef3cd304670ecd1c346836f143f05728c8a693a609ce2a3f2b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6df9e0bb54d11e59daa42ceab1a3d4cbca45b4e35afd40c7824e3d5e8e914613",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-12-19T21:47:40Z",
    "title_canon_sha256": "145dad0fdbd75a9da9c16119f784b7868f0e977c3861963cb1c7bca0e57ec6da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0612562",
    "kind": "arxiv",
    "version": 1
  }
}