Pith Number

pith:UPRFHR5G

pith:2016:UPRFHR5GEWMP75CNCFWSS2USDH

not attested not anchored not stored refs pending

Learning Concepts First: A Course Structure with Improved Educational Outcomes in the Short, Medium, and Long Terms (Especially for Minority Groups Underrepresented in Physics)

David J. Webb

arxiv:1605.02390 v3 · 2016-05-08 · 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{UPRFHR5GEWMP75CNCFWSS2USDH}

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	2026-05-18T00:54:47.803921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3e253c7a62598fff44d116d296a9219f1b03034fb4717ca603e19f3815b9409

Aliases

arxiv: 1605.02390 · arxiv_version: 1605.02390v3 · doi: 10.48550/arxiv.1605.02390 · pith_short_12: UPRFHR5GEWMP · pith_short_16: UPRFHR5GEWMP75CN · pith_short_8: UPRFHR5G

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/UPRFHR5GEWMP75CNCFWSS2USDH \
  | 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: a3e253c7a62598fff44d116d296a9219f1b03034fb4717ca603e19f3815b9409

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d136fb303bf66a80f1243e9b708d81d69f82d592c42586fc495b80ec6b043a40",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2016-05-08T23:44:30Z",
    "title_canon_sha256": "69fa99f8dfbc3a8eb430cd2b5a00a13c1e5fc0494e3106a64ece98537cddf23f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.02390",
    "kind": "arxiv",
    "version": 3
  }
}