Pith Number

pith:QROKLEG7

pith:2019:QROKLEG7IWF26OMBQOMVTAGWLD

not attested not anchored not stored refs pending

Photospheric nitrogen abundances and carbon 12C/13C ratios of red giant stars

Bun'ei Sato, Hiroki Harakawa, Masashi Omiya, Yoichi Takeda

arxiv:1908.07670 v1 · 2019-08-21 · 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{QROKLEG7IWF26OMBQOMVTAGWLD}

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	2026-07-05T00:31:55.583666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

845ca590df458baf398183995980d658ee3c3c1dd57f7ecce4e8542df194177e

Aliases

arxiv: 1908.07670 · arxiv_version: 1908.07670v1 · doi: 10.48550/arxiv.1908.07670 · pith_short_12: QROKLEG7IWF2 · pith_short_16: QROKLEG7IWF26OMB · pith_short_8: QROKLEG7

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/QROKLEG7IWF26OMBQOMVTAGWLD \
  | 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: 845ca590df458baf398183995980d658ee3c3c1dd57f7ecce4e8542df194177e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91bd332e7063314067e7fe3679be9569d2f5dc21c88e9585d1e8c05faa6c4043",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-08-21T01:53:55Z",
    "title_canon_sha256": "33da633e2469c5b995f035b4dd5b351d379a89c53c0cb5b71c071f5e39f8b6e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07670",
    "kind": "arxiv",
    "version": 1
  }
}