Pith Number

pith:N54BD5B6

pith:2014:N54BD5B6RBXYAJ5QT75GRNE2NV

not attested not anchored not stored refs pending

Measuring the Learning from Two-Stage Collaborative Group Exams

Joss Ives

arxiv:1407.6442 v2 · 2014-07-24 · 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{N54BD5B6RBXYAJ5QT75GRNE2NV}

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	2026-05-18T02:29:31.968715Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f7811f43e886f8027b09ffa68b49a6d7432d1091f523bdd7a72557c014149ee

Aliases

arxiv: 1407.6442 · arxiv_version: 1407.6442v2 · doi: 10.48550/arxiv.1407.6442 · pith_short_12: N54BD5B6RBXY · pith_short_16: N54BD5B6RBXYAJ5Q · pith_short_8: N54BD5B6

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/N54BD5B6RBXYAJ5QT75GRNE2NV \
  | 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: 6f7811f43e886f8027b09ffa68b49a6d7432d1091f523bdd7a72557c014149ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85c32bef38937aa5b48fa40cf01b8128245d23d987de982ea2847b06dd2ab9e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2014-07-24T03:59:36Z",
    "title_canon_sha256": "451142b18b37d1b7455cba3fb6a7713b95c32ef684a4735fc3372214cc6ca2b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.6442",
    "kind": "arxiv",
    "version": 2
  }
}