Pith Number

pith:3ELXQVEM

pith:2015:3ELXQVEMCKN4VQRZLHTTQ3MXJD

not attested not anchored not stored refs pending

Investigating student ownership of projects in an upper-division physics lab course

Dimitri R. Dounas-Frazer, H. J. Lewandowski, Jacob T. Stanley, Laura Kiepura

arxiv:1507.03947 v1 · 2015-07-14 · 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{3ELXQVEMCKN4VQRZLHTTQ3MXJD}

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	2026-05-18T00:53:09.006001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d91778548c129bcac23959e7386d9748c259c82e02caf681370324519e91d9c0

Aliases

arxiv: 1507.03947 · arxiv_version: 1507.03947v1 · doi: 10.48550/arxiv.1507.03947 · pith_short_12: 3ELXQVEMCKN4 · pith_short_16: 3ELXQVEMCKN4VQRZ · pith_short_8: 3ELXQVEM

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/3ELXQVEMCKN4VQRZLHTTQ3MXJD \
  | 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: d91778548c129bcac23959e7386d9748c259c82e02caf681370324519e91d9c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e04b4be420fea59eeb72eb18b6af9b04bb8856f63ae346671f7750dc859f8557",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-07-14T17:37:45Z",
    "title_canon_sha256": "49bacdb32b14e4f692de98f093dcaa92745670ce231139bad7de4c9e4d82d525"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03947",
    "kind": "arxiv",
    "version": 1
  }
}