Pith Number

pith:TNUFQY2Z

pith:2015:TNUFQY2ZNNZGR4JDMB6V6FAXQO

not attested not anchored not stored refs pending

Discovery of low-metallicity stars in the central parsec of the Milky Way

2), (2) Physics, (3) Department of Astronomy, 4), (4) ESO, 5), (5) Grenfell Campus, (6) IFA, Andrea M. Ghez (2) ((1) Dunlap Institute, Astronomy Department, Jessica R. Lu (6), Mark R. Morris (2), Memorial University of Newfoundland, Morten St{\o}stad (3), Nathan Winsor (1, Tuan Do (1, UCLA, University of Hawaii), University of Toronto, Wolfgang Kerzendorf (3

arxiv:1506.07891 v1 · 2015-06-25 · 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{TNUFQY2ZNNZGR4JDMB6V6FAXQO}

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	2026-05-18T00:30:22.789779Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b685863596b7268f123607d5f14178393b65728970ba90776c5b5e9b254340f

Aliases

arxiv: 1506.07891 · arxiv_version: 1506.07891v1 · doi: 10.48550/arxiv.1506.07891 · pith_short_12: TNUFQY2ZNNZG · pith_short_16: TNUFQY2ZNNZGR4JD · pith_short_8: TNUFQY2Z

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/TNUFQY2ZNNZGR4JDMB6V6FAXQO \
  | 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: 9b685863596b7268f123607d5f14178393b65728970ba90776c5b5e9b254340f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c552830707d8debcdea57c772f933395b598b48ac1266d1eef89bb5e4c45573",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-06-25T20:10:08Z",
    "title_canon_sha256": "e2acca9e11cdf26a3d110665e8c70099dff419ac3ecc2645ddd25465c29c3ef2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.07891",
    "kind": "arxiv",
    "version": 1
  }
}