Pith Number

pith:DQX7AUBZ

pith:2018:DQX7AUBZONM2FUPN4KRYJLTXD4

not attested not anchored not stored refs pending

Chemical composition of two bright extremely metal-poor stars from the SDSS MARVELS pre-survey

Antony Susmitha, Arun Surya, Avrajit Bandyopadhyay, Sivarani Thirupathi, Sunetra Giridhar, Thomas Masseron, Timothy C. Beers

arxiv:1805.02280 v1 · 2018-05-06 · 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{DQX7AUBZONM2FUPN4KRYJLTXD4}

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	2026-05-18T00:13:25.756603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c2ff050397359a2d1ede2a384ae771f3e897cb58411ff21466f516ff0099bfb

Aliases

arxiv: 1805.02280 · arxiv_version: 1805.02280v1 · doi: 10.48550/arxiv.1805.02280 · pith_short_12: DQX7AUBZONM2 · pith_short_16: DQX7AUBZONM2FUPN · pith_short_8: DQX7AUBZ

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/DQX7AUBZONM2FUPN4KRYJLTXD4 \
  | 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: 1c2ff050397359a2d1ede2a384ae771f3e897cb58411ff21466f516ff0099bfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cebde8c4e1e2e6d51637c33a747736c876785ebe24b5d3ed238acd1f2d05d5b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-05-06T21:38:10Z",
    "title_canon_sha256": "2c57dc833a73c435bfb36909ca38e2dedef82511bca9c3c094603a4b5cd06fdf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.02280",
    "kind": "arxiv",
    "version": 1
  }
}