Pith Number

pith:QWWM2DF7

pith:2009:QWWM2DF7N7MUC3PWJRJQJXSLSR

not attested not anchored not stored refs pending

Lithium in the Globular Cluster NGC 6397: Evidence for dependence on evolutionary status

E. Caffau, H.-G. Ludwig, J. I. Gonzalez Hernandez, L. Sbordone, M. Steffen, N. T. Behara, P. Bonifacio, R. Cayrel, S. Zaggia

arxiv:0909.0983 v2 · 2009-09-07 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QWWM2DF7N7MUC3PWJRJQJXSLSR}

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	2026-05-18T02:11:59.515903Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85accd0cbf6fd9416df64c5304de4b944a9ab5e78c111b2452a9984725252e67

Aliases

arxiv: 0909.0983 · arxiv_version: 0909.0983v2 · doi: 10.48550/arxiv.0909.0983 · pith_short_12: QWWM2DF7N7MU · pith_short_16: QWWM2DF7N7MUC3PW · pith_short_8: QWWM2DF7

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/QWWM2DF7N7MUC3PWJRJQJXSLSR \
  | 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: 85accd0cbf6fd9416df64c5304de4b944a9ab5e78c111b2452a9984725252e67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "533f1d0125fa8efbb775abb010550bb867cb870c71b468a400320db35bfe8526",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-09-07T15:26:50Z",
    "title_canon_sha256": "4259ec0fdb2bbf869a679978495bacbb9d18ce527bb803c9712dad9b14bd1351"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0983",
    "kind": "arxiv",
    "version": 2
  }
}