Pith Number

pith:DQBSW4FV

pith:1999:DQBSW4FVE3MICC5EKIBXM35PBF

not attested not anchored not stored refs pending

Evidence for Intergalactic Absorption in the TeV Gamma-Ray Spectrum of Mkn 501

Alexander K. Konopelko, Apostolos Mastichiadis (Department of Physics, Floyd W. Stecker (Laboratory for High-Energy Astrophysics, Germany), Greece), Greenbelt, Heidelberg, John G. Kirk (Max-Planck-Institut fuer Kernphysik, MD), NASA/Goddard Space Flight Center, Panepistimiopolis, University of Athens, Zografos

arxiv:astro-ph/9904057 v1 · 1999-04-05 · 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{DQBSW4FVE3MICC5EKIBXM35PBF}

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	2026-05-18T04:34:28.929888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c032b70b526d8810ba45203766faf0969903fec199da9187e11ecbc6af52864

Aliases

arxiv: astro-ph/9904057 · arxiv_version: astro-ph/9904057v1 · doi: 10.48550/arxiv.astro-ph/9904057 · pith_short_12: DQBSW4FVE3MI · pith_short_16: DQBSW4FVE3MICC5E · pith_short_8: DQBSW4FV

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/DQBSW4FVE3MICC5EKIBXM35PBF \
  | 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: 1c032b70b526d8810ba45203766faf0969903fec199da9187e11ecbc6af52864

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8226dd4cd1a254ea8722c4dc5358411fb07012d2515cc11b0f6576eb8f4fa47",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-04-05T10:39:20Z",
    "title_canon_sha256": "a383fd640a437ec5cfa5d37484acd3572bdad278fba3d8065fea9f4cad3f096c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9904057",
    "kind": "arxiv",
    "version": 1
  }
}