Pith Number

pith:PPUX3D5F

pith:2023:PPUX3D5FFU6YN5KJ44GLE4DDB7

not attested not anchored not stored refs pending

An improved method to measure $\rm ^{12}C/^{13}C$ and $\rm ^{14}N/^{15}N$ abundance ratios: revisiting CN isotopologues in the Galactic outer disk

Bo Zhang, Donatella Romano, Francesca Matteucci, Junzhi Wang, Lingrui Lin, Padelis P. Papadopoulos, Siyi Feng, Yan Sun, Yichen Sun, Zhi-Yu Zhang

arxiv:2311.12971 v1 · 2023-11-21 · 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{PPUX3D5FFU6YN5KJ44GLE4DDB7}

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	2026-07-05T07:15:21.177590Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7be97d8fa52d3d86f549e70cb270630fe0b8e724a993ec79043eb9cf1af3f057

Aliases

arxiv: 2311.12971 · arxiv_version: 2311.12971v1 · doi: 10.48550/arxiv.2311.12971 · pith_short_12: PPUX3D5FFU6Y · pith_short_16: PPUX3D5FFU6YN5KJ · pith_short_8: PPUX3D5F

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/PPUX3D5FFU6YN5KJ44GLE4DDB7 \
  | 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: 7be97d8fa52d3d86f549e70cb270630fe0b8e724a993ec79043eb9cf1af3f057

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee867bb5c37784f9750e8e742c90b23170179c1cf4da56c13eaf6e43ddd781c3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-11-21T20:21:31Z",
    "title_canon_sha256": "f89b873e93ba5a955a8972eb6fd865863c3624c4392c64d9bb45b67a36b61e9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2311.12971",
    "kind": "arxiv",
    "version": 1
  }
}