Pith Number

pith:J7WDASD6

pith:2022:J7WDASD6VJJQ64YLM7L5P7PNFU

not attested not anchored not stored refs pending

Student-created physics problems as an independent and equitable assessment tool

Bruce A. Schumm, Colin G. West, Joy Ishii

arxiv:2202.07091 v1 · 2022-02-14 · 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{J7WDASD6VJJQ64YLM7L5P7PNFU}

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	2026-07-05T06:00:04.153257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fec30487eaa530f730b67d7d7fded2d31712a606e449581f37ba749c8396e54

Aliases

arxiv: 2202.07091 · arxiv_version: 2202.07091v1 · doi: 10.48550/arxiv.2202.07091 · pith_short_12: J7WDASD6VJJQ · pith_short_16: J7WDASD6VJJQ64YL · pith_short_8: J7WDASD6

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/J7WDASD6VJJQ64YLM7L5P7PNFU \
  | 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: 4fec30487eaa530f730b67d7d7fded2d31712a606e449581f37ba749c8396e54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1a242c7f7754d2cd6283b53e2ae57c69d191ccf2bc4f890c22aaf531da1219a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2022-02-14T23:29:29Z",
    "title_canon_sha256": "a5f8d856236c710244c91bdac2dd8472e8fd5fdd07753922d833a801fe7e8dde"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.07091",
    "kind": "arxiv",
    "version": 1
  }
}