Pith Number

pith:S5BZXTC5

pith:2013:S5BZXTC5W44KN6RX5TNOS2WOKT

not attested not anchored not stored refs pending

Selection, Generalization, and Theories of Cause in Case-Oriented Physics Education Research

Amy D. Robertson, Rachel E. Scherr, Sarah B. McKagan

arxiv:1307.4136 v2 · 2013-07-16 · 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{S5BZXTC5W44KN6RX5TNOS2WOKT}

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	2026-05-18T02:29:55.250395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97439bcc5db738a6fa37ecdae96ace54c6fd475ff43a66e37c3956054930edd8

Aliases

arxiv: 1307.4136 · arxiv_version: 1307.4136v2 · doi: 10.48550/arxiv.1307.4136 · pith_short_12: S5BZXTC5W44K · pith_short_16: S5BZXTC5W44KN6RX · pith_short_8: S5BZXTC5

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/S5BZXTC5W44KN6RX5TNOS2WOKT \
  | 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: 97439bcc5db738a6fa37ecdae96ace54c6fd475ff43a66e37c3956054930edd8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b46e9e66501ff9f9f034f5ae27527995c2169cf63748f70f4984a36ad153810e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2013-07-16T00:21:34Z",
    "title_canon_sha256": "2eb28608b21e7fc8314d0efc3ff199820ed73a0c81fd5c14c609785842ebb0e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4136",
    "kind": "arxiv",
    "version": 2
  }
}