Pith Number

pith:4Q5B2NIK

pith:2011:4Q5B2NIKMZAIAMNBWYOWD2FNST

not attested not anchored not stored refs pending

A Chemical Abundance Study of 10 Open Clusters Based on WIYN-Hydra Spectroscopy

C. A. Pilachowski, E. D. Friel, H. R. Jacobson

arxiv:1107.4139 v1 · 2011-07-20 · astro-ph.GA · 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{4Q5B2NIKMZAIAMNBWYOWD2FNST}

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	2026-05-18T02:01:13.898829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e43a1d350a66408031a1b61d61e8ad94ddd229222e135c4e215c2531d073dc13

Aliases

arxiv: 1107.4139 · arxiv_version: 1107.4139v1 · doi: 10.48550/arxiv.1107.4139 · pith_short_12: 4Q5B2NIKMZAI · pith_short_16: 4Q5B2NIKMZAIAMNB · pith_short_8: 4Q5B2NIK

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/4Q5B2NIKMZAIAMNBWYOWD2FNST \
  | 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: e43a1d350a66408031a1b61d61e8ad94ddd229222e135c4e215c2531d073dc13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c41dfc499bd6d75eaefa356c1ccd1f45863c91d2c3dd0a323d77e5c952b0da49",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-07-20T23:32:29Z",
    "title_canon_sha256": "087fb8194af57a059a29b57c6d86d24305893abb263cc14f14e72daa1c7cb0a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.4139",
    "kind": "arxiv",
    "version": 1
  }
}