Pith Number

pith:JOYFGOD4

pith:2016:JOYFGOD4GFVXEIFYOTZBYFTZX7

not attested not anchored not stored refs pending

Method to study student engagement uniformity in a classroom

George C. Cardoso

arxiv:1611.03448 v1 · 2016-11-10 · 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{JOYFGOD4GFVXEIFYOTZBYFTZX7}

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	2026-05-18T00:59:35.220868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bb053387c316b7220b874f21c1679bfe0fb76b17d357cf9856c32b6c2991299

Aliases

arxiv: 1611.03448 · arxiv_version: 1611.03448v1 · doi: 10.48550/arxiv.1611.03448 · pith_short_12: JOYFGOD4GFVX · pith_short_16: JOYFGOD4GFVXEIFY · pith_short_8: JOYFGOD4

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/JOYFGOD4GFVXEIFYOTZBYFTZX7 \
  | 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: 4bb053387c316b7220b874f21c1679bfe0fb76b17d357cf9856c32b6c2991299

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e8a3c4b10506102273fad48e5854c9fbf2a0311464989f2afd336370ab978dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2016-11-10T19:05:58Z",
    "title_canon_sha256": "689c91a931c860bcb52955369cdbd6c8e6109a233edb76b93adff8dc93627e64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.03448",
    "kind": "arxiv",
    "version": 1
  }
}