Pith Number

pith:VCRIP7PO

pith:2022:VCRIP7POEA44AIRR2IAE5OCU2E

not attested not anchored not stored refs pending

Development and validation of the Converging Lenses Concept Inventory for middle school physics education

Jochen Kuhn, Katharina Scheiter, Salome W\"orner, Sebastian Becker, Stefan K\"uchemann

arxiv:2205.09861 v1 · 2022-05-19 · 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{VCRIP7POEA44AIRR2IAE5OCU2E}

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	2026-07-05T04:25:01.071678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8a287fdee2039c02231d2004eb854d137b5cfaae653d04b9a39b92e9f79d9ac

Aliases

arxiv: 2205.09861 · arxiv_version: 2205.09861v1 · doi: 10.48550/arxiv.2205.09861 · pith_short_12: VCRIP7POEA44 · pith_short_16: VCRIP7POEA44AIRR · pith_short_8: VCRIP7PO

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/VCRIP7POEA44AIRR2IAE5OCU2E \
  | 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: a8a287fdee2039c02231d2004eb854d137b5cfaae653d04b9a39b92e9f79d9ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e6955ec9c70f3c8cf64ddda0a56dfbf31fa154c821ca764c6716a349638fbca",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2022-05-19T21:06:50Z",
    "title_canon_sha256": "2848904882213420df786b7082eba19bf4d9330b2734db6c08562ac0ed3394ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2205.09861",
    "kind": "arxiv",
    "version": 1
  }
}