Pith Number

pith:HRMCTLM2

pith:2019:HRMCTLM2HLZPMCZG4QYFC5JAL4

not attested not anchored not stored refs pending

Terrestrial deuterium-to-hydrogen ratio in water in hyperactive comets

2), (2) Sorbonne universit\'e, (3) LESIA, (4) Max-Planck-Institut f\"ur Radioastronomie, (5) I. Physikalisches Institut, Bonn, California Institute of Technology, C. Dur\'an (4), CNRS, D. Bockel\'ee-Morvan (3), D. C. Lis (1, France, Germany, Germany), H. Wiesemeyer (4), J. Stutzki (5), K\"oln, LERMA Paris, Meudon, N. Biver (3), Observatoire de Paris, Pasadena, R. G\"usten (4), Sorbonne Paris Cit\'e, Sorbonne Universit\'e, Universit\"at zu K\"oln, Universit\'e Paris Diderot, Universit\'e PSL, USA, Yan Delorme (2), Y. Okada (5) ((1) Jet Propulsion Laboratory

arxiv:1904.09175 v2 · 2019-04-19 · astro-ph.EP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HRMCTLM2HLZPMCZG4QYFC5JAL4}

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	2026-05-17T23:45:26.744350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c5829ad9a3af2f60b26e4305175205f0849edc8a36755114791cc05f04d4df9

Aliases

arxiv: 1904.09175 · arxiv_version: 1904.09175v2 · doi: 10.48550/arxiv.1904.09175 · pith_short_12: HRMCTLM2HLZP · pith_short_16: HRMCTLM2HLZPMCZG · pith_short_8: HRMCTLM2

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/HRMCTLM2HLZPMCZG4QYFC5JAL4 \
  | 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: 3c5829ad9a3af2f60b26e4305175205f0849edc8a36755114791cc05f04d4df9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2009f7f57eef2a77639cf2f6837398dd36f386204a670f97530323683a3cb1f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-04-19T12:50:38Z",
    "title_canon_sha256": "c9c03be2e169ca8a818420ea6c28a77a987bb7e7280effe5b7fa1a68e1df1c96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09175",
    "kind": "arxiv",
    "version": 2
  }
}