Pith Number

pith:ZWPDHRCQ

pith:2019:ZWPDHRCQUOVYEMTGWZFADJ2TJB

not attested not anchored not stored refs pending

The SOFIA Massive (SOMA) Star Formation Survey. II. High Luminosity Protostars

Barbara Whitney, James M. De Buizer, Jan E. Staff, Jonathan C. Tan, Kei E. I. Tanaka, Maria T. Beltr\'an, Mengyao Liu, Viviana Rosero, Yichen Zhang

arxiv:1901.01958 v2 · 2019-01-07 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZWPDHRCQUOVYEMTGWZFADJ2TJB}

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	2026-05-17T23:50:22.040681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd9e33c450a3ab823266b64a01a75348498941cdfbea92eb4a1e4e0206eacb92

Aliases

arxiv: 1901.01958 · arxiv_version: 1901.01958v2 · doi: 10.48550/arxiv.1901.01958 · pith_short_12: ZWPDHRCQUOVY · pith_short_16: ZWPDHRCQUOVYEMTG · pith_short_8: ZWPDHRCQ

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/ZWPDHRCQUOVYEMTGWZFADJ2TJB \
  | 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: cd9e33c450a3ab823266b64a01a75348498941cdfbea92eb4a1e4e0206eacb92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72763d54d6baff07b78b82f239a0dc10b92068ddc1988adf4ccf731945eed07b",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-07T18:23:59Z",
    "title_canon_sha256": "c20f387eeaaac5bb7f3ec4b7dcd05fcb4bf02cf2c6314a4673137c61f140273d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.01958",
    "kind": "arxiv",
    "version": 2
  }
}