Pith Number

pith:BKCXZUIT

pith:2009:BKCXZUITHSETZFMU4LJFKC27XP

not attested not anchored not stored refs pending

Main-Sequence and sub-giant stars in the Globular Cluster NGC6397: The complex evolution of the lithium abundance

E. Caffau, H.-G. Ludwig, J. I. Gonz\'alez Hern\'andez, L. Sbordone, M. Steffen, N. Behara, P. Bonifacio, R. Cayrel, S. Zaggia

arxiv:0912.4105 v1 · 2009-12-21 · 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{BKCXZUITHSETZFMU4LJFKC27XP}

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	2026-05-18T02:10:15.093390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a857cd1133c893c9594e2d2550b5fbbfa1f1117c1d0ca09f5b26faaa5bf152e

Aliases

arxiv: 0912.4105 · arxiv_version: 0912.4105v1 · doi: 10.48550/arxiv.0912.4105 · pith_short_12: BKCXZUITHSET · pith_short_16: BKCXZUITHSETZFMU · pith_short_8: BKCXZUIT

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/BKCXZUITHSETZFMU4LJFKC27XP \
  | 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: 0a857cd1133c893c9594e2d2550b5fbbfa1f1117c1d0ca09f5b26faaa5bf152e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0cfe1234e8a92b5c4b72e9d00dddf91f80d1b023a9c201f48e8546e6487c4f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-12-21T09:00:55Z",
    "title_canon_sha256": "660213707ac4425654cf2012e2e164d7c2a68a3400576e59669ec61f08b2123d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4105",
    "kind": "arxiv",
    "version": 1
  }
}