Pith Number

pith:57CO3FRJ

pith:2026:57CO3FRJR66BGJTRP64XYWM7WU

not attested not anchored not stored refs pending

Missing Data on Physics Exams: Demographic Patterns, Course-Level Predictions, and Implications for Equity

Cassandra Paul, David J. Webb, Mary Kate Chessey

arxiv:2606.05473 v1 · 2026-06-03 · 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{57CO3FRJR66BGJTRP64XYWM7WU}

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	2026-06-05T01:14:52.283258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efc4ed96298fbc1326717fb97c599fb517cdd77bdf2134318c5883bd232e0d48

Aliases

arxiv: 2606.05473 · arxiv_version: 2606.05473v1 · doi: 10.48550/arxiv.2606.05473 · pith_short_12: 57CO3FRJR66B · pith_short_16: 57CO3FRJR66BGJTR · pith_short_8: 57CO3FRJ

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/57CO3FRJR66BGJTRP64XYWM7WU \
  | 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: efc4ed96298fbc1326717fb97c599fb517cdd77bdf2134318c5883bd232e0d48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fa6af361d16fa8a8faea7d9741fcdc34c867dd2e3d58128092f8bbdedb538d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2026-06-03T21:53:02Z",
    "title_canon_sha256": "df58738308a5cc4e112c4a3b915777117ce1be3213a320372e4141bc8bb19199"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.05473",
    "kind": "arxiv",
    "version": 1
  }
}