Pith Number

pith:BDB42RPD

pith:2009:BDB42RPDYTL4TXCCAMH4BSBPCZ

not attested not anchored not stored refs pending

New Discoveries in Galaxies across Cosmic Time through Advances in Laboratory Astrophysics

AAS WGLA: Nancy Brickhouse, Adam Frank, Daniel Wolf Savin, Eric Herbst, Farid Salama, Gary Ferland, John Cowan, Keith Olive, Lucy Ziurys, Paul Drake, Steven Federman

arxiv:0902.4681 v1 · 2009-02-26 · astro-ph.IM · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BDB42RPDYTL4TXCCAMH4BSBPCZ}

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	2026-05-18T03:48:02.844024Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08c3cd45e3c4d7c9dc42030fc0c82f1657413cffc55a008458839d7cd413ff69

Aliases

arxiv: 0902.4681 · arxiv_version: 0902.4681v1 · doi: 10.48550/arxiv.0902.4681 · pith_short_12: BDB42RPDYTL4 · pith_short_16: BDB42RPDYTL4TXCC · pith_short_8: BDB42RPD

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/BDB42RPDYTL4TXCCAMH4BSBPCZ \
  | 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: 08c3cd45e3c4d7c9dc42030fc0c82f1657413cffc55a008458839d7cd413ff69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53907ccc43010656d49b6bc1ad8fed19c3b7bd29d170f7161c5a67f84ed94846",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-02-26T19:41:45Z",
    "title_canon_sha256": "daae4f27d6a258ace21680feefad308919c69b28a9184c6c3b2ab3cb310a8dcf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4681",
    "kind": "arxiv",
    "version": 1
  }
}