Pith Number

pith:PNGDEFUL

pith:2012:PNGDEFULKTYU3GIXZ5JGJG3LTM

not attested not anchored not stored refs pending

The Na 8200 Angstrom Doublet as an Age Indicator in Low-Mass Stars

Drummond Fielding, Emily Rice, Joshua E. Schlieder, Michal Simon, Rachael Tomasino, Sebastien Lepine

arxiv:1202.4191 v1 · 2012-02-19 · 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{PNGDEFULKTYU3GIXZ5JGJG3LTM}

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	2026-05-18T01:58:23.781102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b4c32168b54f14d9917cf52649b6b9b1caea14490b90c9ff8424945f61e4368

Aliases

arxiv: 1202.4191 · arxiv_version: 1202.4191v1 · doi: 10.48550/arxiv.1202.4191 · pith_short_12: PNGDEFULKTYU · pith_short_16: PNGDEFULKTYU3GIX · pith_short_8: PNGDEFUL

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/PNGDEFULKTYU3GIXZ5JGJG3LTM \
  | 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: 7b4c32168b54f14d9917cf52649b6b9b1caea14490b90c9ff8424945f61e4368

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2595d0001eec133da5d3908d358f2edb3355a736fa14b84b9ccaddbb07947ff6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-02-19T21:55:00Z",
    "title_canon_sha256": "855e191d5d03d73b6d8e6431ba0efc5ab8a081677901e4a0703a3b6c98710861"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4191",
    "kind": "arxiv",
    "version": 1
  }
}