Pith Number

pith:4QBXTKDV

pith:2019:4QBXTKDVTKSZOEHDK7HTDRZ4YC

not attested not anchored not stored refs pending

The impact of incoming preparation and demographics on performance in Physics I: a multi-institution comparison

Carl Wieman, Eric Burkholder, G. Peter Lepage, Shima Salehi, Steven Pollock

arxiv:1905.00389 v1 · 2019-05-01 · 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{4QBXTKDVTKSZOEHDK7HTDRZ4YC}

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	2026-05-17T23:47:13.036639Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e40379a8759aa59710e357cf31c73cc0bd72829d92c3645347082b9443d7ad17

Aliases

arxiv: 1905.00389 · arxiv_version: 1905.00389v1 · doi: 10.48550/arxiv.1905.00389 · pith_short_12: 4QBXTKDVTKSZ · pith_short_16: 4QBXTKDVTKSZOEHD · pith_short_8: 4QBXTKDV

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/4QBXTKDVTKSZOEHDK7HTDRZ4YC \
  | 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: e40379a8759aa59710e357cf31c73cc0bd72829d92c3645347082b9443d7ad17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b290a253dced64fd40972f1956fe31d9feb5b1095a7862428360d3e6ce4f5b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2019-05-01T17:19:10Z",
    "title_canon_sha256": "06c60c58869588d75fc53a97ad393ef0b7643ca380d47befdfff9d41e72120ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.00389",
    "kind": "arxiv",
    "version": 1
  }
}