Pith Number

pith:2IL7D5B5

pith:2019:2IL7D5B5HOZW7ZL5KSPDZSK6ZD

not attested not anchored not stored refs pending

Developing a reasoning inventory for measuring physics quantitative literacy

Alexis Olsho, Andrew Boudreaux, Kyle J. Louis, Louis J. Remy, Mitchell A. Nussenbaum, Paul J. Kelly, Philip Eaton, Suzanne W. Brahmia, Trevor I. Smith

arxiv:1901.03351 v1 · 2019-01-10 · 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{2IL7D5B5HOZW7ZL5KSPDZSK6ZD}

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	2026-05-17T23:56:31.485586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d217f1f43d3bb36fe57d549e3cc95ec8eb3b298c7353e725c7fbb7e0ee083f74

Aliases

arxiv: 1901.03351 · arxiv_version: 1901.03351v1 · doi: 10.48550/arxiv.1901.03351 · pith_short_12: 2IL7D5B5HOZW · pith_short_16: 2IL7D5B5HOZW7ZL5 · pith_short_8: 2IL7D5B5

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/2IL7D5B5HOZW7ZL5KSPDZSK6ZD \
  | 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: d217f1f43d3bb36fe57d549e3cc95ec8eb3b298c7353e725c7fbb7e0ee083f74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fb8a8aef8a3f16beab91d2d2cd7c52cee209b396405b262e4f41b1207a25370",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2019-01-10T19:21:04Z",
    "title_canon_sha256": "5c9b0f4bb5568673eaccd4bde939aec94212dc3a5a7f96ce835f03ef2f672075"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.03351",
    "kind": "arxiv",
    "version": 1
  }
}