Pith Number

pith:3ADLZQMK

pith:2004:3ADLZQMKKOOOH4VWOKX5DCYMDF

not attested not anchored not stored refs pending

Terrestrial Ozone Depletion Due to a Milky Way Gamma-Ray Burst

Adrian L. Melott, Brian C. Thomas (1), Charles H. Jackman (2), Claude M. Laird (1), Daniel P. Hogan (1) ((1) University of Kansas) ((2) NASA Goddard Space Flight Center), John K. Cannizzo (2), Neil Gehrels, Richard S. Stolarski

arxiv:astro-ph/0411284 v2 · 2004-11-10 · astro-ph · physics.ao-ph · physics.geo-ph · physics.space-ph · q-bio.PE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3ADLZQMKKOOOH4VWOKX5DCYMDF}

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.

Cited by

1 paper in Pith

Upper limit on the fraction of alien civilizations that develop communication technology

Receipt and verification

First computed	2026-07-04T16:45:09.500451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d806bcc18a539ce3f2b672afd18b0c1959878ae649bc69fff1205f02c69562f5

Aliases

arxiv: astro-ph/0411284 · arxiv_version: astro-ph/0411284v2 · doi: 10.48550/arxiv.astro-ph/0411284 · pith_short_12: 3ADLZQMKKOOO · pith_short_16: 3ADLZQMKKOOOH4VW · pith_short_8: 3ADLZQMK

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/3ADLZQMKKOOOH4VWOKX5DCYMDF \
  | 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: d806bcc18a539ce3f2b672afd18b0c1959878ae649bc69fff1205f02c69562f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2573ff3a9a5e6201a29f5345d9b2d4187b374ed7c842c719210504e90053abf5",
    "cross_cats_sorted": [
      "physics.ao-ph",
      "physics.geo-ph",
      "physics.space-ph",
      "q-bio.PE"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-11-10T21:00:15Z",
    "title_canon_sha256": "1b70e3c4b9b36e1cf9766692db310c3d76c593dc72d9e066e51b5f1c2efd03b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0411284",
    "kind": "arxiv",
    "version": 2
  }
}