Pith Number

pith:K4OAWLTS

pith:2001:K4OAWLTSLA3MD3Y333BSS3BRBW

not attested not anchored not stored refs pending

Intermittent Jolts of Galactic UV Radiation: Mutagenetic Effects

J. Craig Wheeler, John M. Scalo, Peter Williams

arxiv:astro-ph/0104209 v1 · 2001-04-11 · astro-ph · physics.bio-ph · q-bio

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K4OAWLTSLA3MD3Y333BSS3BRBW}

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	2026-07-04T14:11:08.210603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

571c0b2e725836c1ef1bdec3296c310dbdff2210e5c4d8246463c500f6412bf9

Aliases

arxiv: astro-ph/0104209 · arxiv_version: astro-ph/0104209v1 · doi: 10.48550/arxiv.astro-ph/0104209 · pith_short_12: K4OAWLTSLA3M · pith_short_16: K4OAWLTSLA3MD3Y3 · pith_short_8: K4OAWLTS

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/K4OAWLTSLA3MD3Y333BSS3BRBW \
  | 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: 571c0b2e725836c1ef1bdec3296c310dbdff2210e5c4d8246463c500f6412bf9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54bc2e5ec3f31712956e16703c55a5047046b9e258f66cb49a2dab805bb30544",
    "cross_cats_sorted": [
      "physics.bio-ph",
      "q-bio"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-04-11T21:06:49Z",
    "title_canon_sha256": "66089cb07481d7130196dc9d3bd67cdee92c1410498647f9ee3f4c8e3ae35d8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0104209",
    "kind": "arxiv",
    "version": 1
  }
}