Pith Number

pith:PWG47SPQ

pith:2019:PWG47SPQJDOVD44K6QJUN6EBUI

not attested not anchored not stored refs pending

Primarily Undergraduate Institutions and the Astronomy Community

Aileen A. O'Donoghue (St. Lawrence University), Aparna Venkatesan (University of San Francisco), Joseph Ribaudo (Providence College, Rebecca A. Koopmann (Union College), Utica College)

arxiv:1907.07118 v1 · 2019-07-16 · astro-ph.IM · physics.ed-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PWG47SPQJDOVD44K6QJUN6EBUI}

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	2026-05-17T23:40:28.012862Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d8dcfc9f048dd51f38af41346f881a223b4b00fdbe10b2715b90db2d6b1e83f

Aliases

arxiv: 1907.07118 · arxiv_version: 1907.07118v1 · doi: 10.48550/arxiv.1907.07118 · pith_short_12: PWG47SPQJDOV · pith_short_16: PWG47SPQJDOVD44K · pith_short_8: PWG47SPQ

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/PWG47SPQJDOVD44K6QJUN6EBUI \
  | 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: 7d8dcfc9f048dd51f38af41346f881a223b4b00fdbe10b2715b90db2d6b1e83f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3137b4fa47f6dccf1530e403c603228e55a317439f26391f07ec69357b9d3b9e",
    "cross_cats_sorted": [
      "physics.ed-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-07-16T16:53:41Z",
    "title_canon_sha256": "499704be58b1beb01e06c28a8883d12557d5ea398bc1d8a246c3b12c4e7ad366"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.07118",
    "kind": "arxiv",
    "version": 1
  }
}