Pith Number

pith:LN5HD5AZ

pith:2019:LN5HD5AZTNZIIDG77HQB5LEWKZ

not attested not anchored not stored refs pending

Astro2020 Science White Paper: Measuring Protostar Masses: The Key to Protostellar Evolution

Ian Stephens (CfA/SAO), Joel Green (STSci), John J. Tobin (NRAO), Leslie Looney (University of Illinois), Michael M. Dunham (SUNY - Fredonia), Nicole Karnath (University of Toledo), Patrick Sheehan (National Radio Astronomy Observatory), Rob Gutermuth (University of Massachusetts), Stella Offner (University of Texas), S. Tom Megeath (University of Toledo), Will Fischer (STSci), Yao-Lun Yang (University of Texas), Zhi-Yun Li (University of Virginia)

arxiv:1904.08443 v1 · 2019-04-17 · 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{LN5HD5AZTNZIIDG77HQB5LEWKZ}

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	2026-05-17T23:48:14.212007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b7a71f4199b72840cdff9e01eac96567d8772dfd758fc0957bff09c43766384

Aliases

arxiv: 1904.08443 · arxiv_version: 1904.08443v1 · doi: 10.48550/arxiv.1904.08443 · pith_short_12: LN5HD5AZTNZI · pith_short_16: LN5HD5AZTNZIIDG7 · pith_short_8: LN5HD5AZ

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/LN5HD5AZTNZIIDG77HQB5LEWKZ \
  | 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: 5b7a71f4199b72840cdff9e01eac96567d8772dfd758fc0957bff09c43766384

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d190fb2236481e3efdb96aa4def27d37aecb47bfbe53145eb065f5207a5667c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-04-17T18:20:49Z",
    "title_canon_sha256": "67007ff313655e6cc81dae0f3c41203fbab18482aa0de9690ada8ed43f9a58ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08443",
    "kind": "arxiv",
    "version": 1
  }
}