Pith Number

pith:EKQEG4Z6

pith:2011:EKQEG4Z6D7CKBYIFJENB36BFU7

not attested not anchored not stored refs pending

Fostering Computational Thinking

Marcos D. Caballero, Matthew A. Kohlmyer, Michael F. Schatz

arxiv:1112.5069 v1 · 2011-12-21 · 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{EKQEG4Z6D7CKBYIFJENB36BFU7}

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	2026-05-18T04:05:56.315594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22a043733e1fc4a0e105491a1df825a7f33f8dcc2022bd50ac561bbea3634827

Aliases

arxiv: 1112.5069 · arxiv_version: 1112.5069v1 · doi: 10.48550/arxiv.1112.5069 · pith_short_12: EKQEG4Z6D7CK · pith_short_16: EKQEG4Z6D7CKBYIF · pith_short_8: EKQEG4Z6

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/EKQEG4Z6D7CKBYIFJENB36BFU7 \
  | 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: 22a043733e1fc4a0e105491a1df825a7f33f8dcc2022bd50ac561bbea3634827

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "401a8f6bc232605f8f264decaad1f0953da017dd3837408d3783910f78b6f35e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2011-12-21T15:59:29Z",
    "title_canon_sha256": "7b6231310473dc1d6c00c513d6c00abc48e90a3acbcd069d8e088a3cbddb8e91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.5069",
    "kind": "arxiv",
    "version": 1
  }
}