Pith Number

pith:VI7XNQRO

pith:2017:VI7XNQRO6X7KS2KSXV6TH4BZ5U

not attested not anchored not stored refs pending

First measurement of the 14N/15N ratio in the analogue of the Sun progenitor OMC-2 FIR4

Ali Jaber Al-Edhari, Ana Lopez-Sepulcre, Cecilia Ceccarelli, Claudine Kahane, Francesco Fontani, Mihkel Kama

arxiv:1712.01564 v1 · 2017-12-05 · 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{VI7XNQRO6X7KS2KSXV6TH4BZ5U}

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	2026-05-18T00:24:47.822767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa3f76c22ef5fea96952bd7d33f039ed1d0d5ee1802a855b3804da8b5e23d689

Aliases

arxiv: 1712.01564 · arxiv_version: 1712.01564v1 · doi: 10.48550/arxiv.1712.01564 · pith_short_12: VI7XNQRO6X7K · pith_short_16: VI7XNQRO6X7KS2KS · pith_short_8: VI7XNQRO

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/VI7XNQRO6X7KS2KSXV6TH4BZ5U \
  | 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: aa3f76c22ef5fea96952bd7d33f039ed1d0d5ee1802a855b3804da8b5e23d689

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a414fe93bc342015ab48d85ef43c7a3f53daf75ec5c86c5c8ac50df4974ca23",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-05T10:43:15Z",
    "title_canon_sha256": "a8efdfe75a4d81a74294ee905fc33e7caa4e6f0de747ba3cafc2fdf435ca6257"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.01564",
    "kind": "arxiv",
    "version": 1
  }
}