Pith Number

pith:HUSOD72W

pith:2018:HUSOD72WARKDVQ7BNKOP5237HI

not attested not anchored not stored refs pending

Nitrogen isotope fractionation in protoplanetary disks

2) ((1) ESO Garching, (2) MPE Garching, (3) Obs. de Paris, (4) Leiden Obs.), Alan N. Heays (3), Ewine F. van Dishoeck (4, Paolo Cazzoletti (2), Ruud Visser (1), Simon Bruderer (2), Stefano Facchini (2)

arxiv:1802.02841 v2 · 2018-02-08 · astro-ph.SR · 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{HUSOD72WARKDVQ7BNKOP5237HI}

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	2026-05-18T00:10:31.870883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d24e1ff5604543ac3e16a9cfeeb7f3a1520cb8302a2c7ce90c9eb8b09673e67

Aliases

arxiv: 1802.02841 · arxiv_version: 1802.02841v2 · doi: 10.48550/arxiv.1802.02841 · pith_short_12: HUSOD72WARKD · pith_short_16: HUSOD72WARKDVQ7B · pith_short_8: HUSOD72W

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/HUSOD72WARKDVQ7BNKOP5237HI \
  | 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: 3d24e1ff5604543ac3e16a9cfeeb7f3a1520cb8302a2c7ce90c9eb8b09673e67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "005636deb8ab51b67674af8a909c57f772c24ce48ccb6251d5da47fa7d8d0f1f",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-02-08T13:20:46Z",
    "title_canon_sha256": "be94e04c76f4d8b5bbdc5f4702347ddaf3785d3b9577f4190b3760ccf90e62b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02841",
    "kind": "arxiv",
    "version": 2
  }
}