Pith Number

pith:PM26SOQI

pith:2009:PM26SOQIMDDZNB6PN5ZF4H2ZNI

not attested not anchored not stored refs pending

Age and mass of solar twins constrained by lithium abundance

G. F. Porto de Mello, J.D. do Nascimento Jr, J. Melendez, J.R. de Medeiros, M. Bazot, M. Castro, S. Theado

arxiv:0904.3580 v2 · 2009-04-23 · astro-ph.SR · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PM26SOQIMDDZNB6PN5ZF4H2ZNI}

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	2026-05-18T02:13:57.914169Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b35e93a0860c79687cf6f725e1f596a2a7c7d4f009f1fa3786f3c033b6a83b3

Aliases

arxiv: 0904.3580 · arxiv_version: 0904.3580v2 · doi: 10.48550/arxiv.0904.3580 · pith_short_12: PM26SOQIMDDZ · pith_short_16: PM26SOQIMDDZNB6P · pith_short_8: PM26SOQI

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/PM26SOQIMDDZNB6PN5ZF4H2ZNI \
  | 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: 7b35e93a0860c79687cf6f725e1f596a2a7c7d4f009f1fa3786f3c033b6a83b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ac6452baa50abbd8ece9655663f6377e0e13ab7c0b80e402c4421a472003641",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-04-23T00:50:00Z",
    "title_canon_sha256": "62a6142b7eb34b499507635619a4f35c10b453321341c1ec6a933b4dc4e16db6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3580",
    "kind": "arxiv",
    "version": 2
  }
}