Pith Number

pith:CPNLR4EA

pith:2009:CPNLR4EA52ZI7L7WO3A7FGHETQ

not attested not anchored not stored refs pending

Al-26 and the formation of the Solar System from a molecular cloud contaminated by Wolf-Rayet winds

Alexander N. Krot, Eric Gaidos, Jonathan P. Williams, Sean N. Raymond

arxiv:0901.3364 v1 · 2009-01-21 · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CPNLR4EA52ZI7L7WO3A7FGHETQ}

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	2026-05-18T02:35:06.302388Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13dab8f080eeb28faff676c1f298e49c3a08de008850102b6d6adb075ccd3d87

Aliases

arxiv: 0901.3364 · arxiv_version: 0901.3364v1 · doi: 10.48550/arxiv.0901.3364 · pith_short_12: CPNLR4EA52ZI · pith_short_16: CPNLR4EA52ZI7L7W · pith_short_8: CPNLR4EA

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/CPNLR4EA52ZI7L7WO3A7FGHETQ \
  | 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: 13dab8f080eeb28faff676c1f298e49c3a08de008850102b6d6adb075ccd3d87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae1daffa62ce1ad2d076cffc3dabae7a86cdfa17e5521e182e4eb2aeb04b5bc6",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-01-21T21:32:31Z",
    "title_canon_sha256": "5559b84898417de85a1d77273a3434ba2995e0f990fbc7890d9cf61de48d7efe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3364",
    "kind": "arxiv",
    "version": 1
  }
}