Pith Number

pith:KP2NBAVI

pith:2011:KP2NBAVIPNOCA2SSBBZFUBEHFH

not attested not anchored not stored refs pending

Investigating Student Communities with Network Analysis of Interactions in a Physics Learning Center

Eric Brewe, Laird H. Kramer, Vashti Sawtelle

arxiv:1109.4139 v2 · 2011-09-19 · 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{KP2NBAVIPNOCA2SSBBZFUBEHFH}

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	2026-05-18T03:50:48.701747Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53f4d082a87b5c206a5208725a048729e44922c8e574f6a4ca4acbc5b33dc8a6

Aliases

arxiv: 1109.4139 · arxiv_version: 1109.4139v2 · doi: 10.48550/arxiv.1109.4139 · pith_short_12: KP2NBAVIPNOC · pith_short_16: KP2NBAVIPNOCA2SS · pith_short_8: KP2NBAVI

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/KP2NBAVIPNOCA2SSBBZFUBEHFH \
  | 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: 53f4d082a87b5c206a5208725a048729e44922c8e574f6a4ca4acbc5b33dc8a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf1b7dd4184df39d97b30df50dfe01c45cc35b1f2eb8a7026e463201ba8c5d26",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2011-09-19T19:57:00Z",
    "title_canon_sha256": "78cdd9881a60ef41202ccfd1d3089020f6627f7904f050950be2435a7d45edd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4139",
    "kind": "arxiv",
    "version": 2
  }
}