Pith Number

pith:XPPBK5OF

pith:2024:XPPBK5OFRTWDI4A3VRISHLEW2L

not attested not anchored not stored refs pending

Challenges in addressing student difficulties with basics and change of basis for two-state quantum systems using a multiple-choice question sequence in online and in-person classes

Chandralekha Singh, Peter Hu, Yangqiuting Li

arxiv:2402.18069 v2 · 2024-02-28 · 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{XPPBK5OFRTWDI4A3VRISHLEW2L}

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	2026-07-05T09:20:22.714705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbde1575c58cec34701bac5123ac96d2ecc256e3199dbc50c7904427a3e39fef

Aliases

arxiv: 2402.18069 · arxiv_version: 2402.18069v2 · doi: 10.48550/arxiv.2402.18069 · pith_short_12: XPPBK5OFRTWD · pith_short_16: XPPBK5OFRTWDI4A3 · pith_short_8: XPPBK5OF

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/XPPBK5OFRTWDI4A3VRISHLEW2L \
  | 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: bbde1575c58cec34701bac5123ac96d2ecc256e3199dbc50c7904427a3e39fef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea8398506ab3469c9165568c488f65df26c31ee10b44481d612a29d39526bf68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2024-02-28T05:57:02Z",
    "title_canon_sha256": "9978e0a06692d3567831527fc572fe5ea8e6d495b1527d493606904c01ee570b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2402.18069",
    "kind": "arxiv",
    "version": 2
  }
}