Pith Number

pith:NBSWEN7S

pith:2018:NBSWEN7SG5AUKEIPPEYQ37WNHE

not attested not anchored not stored refs pending

The r-Process Pattern of a Bright, Highly r-Process-Enhanced, Metal-Poor Halo Star at [Fe/H] ~ -2

A. Frebel, C.E. Davis, C.M. Sakari, D Yong, E.M. Farrell, E.M. Holmbeck, G. Wallerstein, I.U. Roederer, K.A. Venn, T.C. Beers, T. Hansen, V.M. Placco

arxiv:1801.07727 v1 · 2018-01-23 · astro-ph.SR · 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{NBSWEN7SG5AUKEIPPEYQ37WNHE}

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	2026-05-18T00:22:22.950669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68656237f2374145110f79310dfecd391f4968fca8523f78054406e67a9bd738

Aliases

arxiv: 1801.07727 · arxiv_version: 1801.07727v1 · doi: 10.48550/arxiv.1801.07727 · pith_short_12: NBSWEN7SG5AU · pith_short_16: NBSWEN7SG5AUKEIP · pith_short_8: NBSWEN7S

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/NBSWEN7SG5AUKEIPPEYQ37WNHE \
  | 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: 68656237f2374145110f79310dfecd391f4968fca8523f78054406e67a9bd738

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d581a8505404196f5155333354780897462a856a2ae971cde8734b71061f7539",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-01-23T19:00:40Z",
    "title_canon_sha256": "d88c892c6fc592f66a4c6618bbdb8cab33e3da9a0691bce73b3282824fc8cb56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07727",
    "kind": "arxiv",
    "version": 1
  }
}