Pith Number

pith:QB7JA7MP

pith:2014:QB7JA7MPS2U4WNUVYLGJMV26Z4

not attested not anchored not stored refs pending

Teaching to Learn: iPads as Tools for Transforming Physics Student Roles

Ben Van Dusen, Susan Nicholson-Dykstra, Valerie Otero

arxiv:1408.2545 v1 · 2014-08-11 · 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{QB7JA7MPS2U4WNUVYLGJMV26Z4}

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	2026-05-17T23:59:04.065551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

807e907d8f96a9cb3695c2cc96575ecf32a788914865697d022253d233ae1305

Aliases

arxiv: 1408.2545 · arxiv_version: 1408.2545v1 · doi: 10.48550/arxiv.1408.2545 · pith_short_12: QB7JA7MPS2U4 · pith_short_16: QB7JA7MPS2U4WNUV · pith_short_8: QB7JA7MP

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/QB7JA7MPS2U4WNUVYLGJMV26Z4 \
  | 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: 807e907d8f96a9cb3695c2cc96575ecf32a788914865697d022253d233ae1305

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a5bf76ab2f299fa19f841dff22fd0874d934e2167ec09eb89d4f434b43bf207",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2014-08-11T20:19:10Z",
    "title_canon_sha256": "6c1652c9b9e9748b9bee2e44f43514a4e2087256c226c8bb60484c6ed317bcdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.2545",
    "kind": "arxiv",
    "version": 1
  }
}