Pith Number

pith:ZS2UHSVE

pith:2012:ZS2UHSVEI4WJZYTY45L2FJSDT2

not attested not anchored not stored refs pending

New Hubble Space Telescope Observations of Heavy Elements in Four Metal-Poor Stars

Anna Frebel, Christopher Sneden, Hendrik Schatz, Ian B. Thompson, Ian U. Roederer, Inese I. Ivans, James E. Lawler, Jennifer S. Sobeck, John J. Cowan, Timothy C. Beers

arxiv:1210.6387 v1 · 2012-10-23 · 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{ZS2UHSVEI4WJZYTY45L2FJSDT2}

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	2026-05-18T01:53:43.996976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccb543caa4472c9ce278e757a2a6439eae02e998b746235a50c39a1b11b8fd2e

Aliases

arxiv: 1210.6387 · arxiv_version: 1210.6387v1 · doi: 10.48550/arxiv.1210.6387 · pith_short_12: ZS2UHSVEI4WJ · pith_short_16: ZS2UHSVEI4WJZYTY · pith_short_8: ZS2UHSVE

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/ZS2UHSVEI4WJZYTY45L2FJSDT2 \
  | 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: ccb543caa4472c9ce278e757a2a6439eae02e998b746235a50c39a1b11b8fd2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4e255a3a9e5ef375d35bd1d44e1b182911db1878b586228db44fa0ae56ad9fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-10-23T21:35:27Z",
    "title_canon_sha256": "7e68166e557652b9a2849912ed5a7957d934410f6c625c4105b62d719f13090d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.6387",
    "kind": "arxiv",
    "version": 1
  }
}