Pith Number

pith:NTBSXOZU

pith:2016:NTBSXOZUPT245O57IWXXKJ5PIW

not attested not anchored not stored refs pending

Using Categorization of Problems as an Instructional Tool to Help Introductory Students Learn Physics

Andrew Mason, Chandralekha Singh

arxiv:1602.07680 v1 · 2016-02-23 · 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{NTBSXOZUPT245O57IWXXKJ5PIW}

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	2026-05-18T01:20:00.696655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cc32bbb347cf5cebbbf45af7527af45a989846d98e985411411bc82eb984861

Aliases

arxiv: 1602.07680 · arxiv_version: 1602.07680v1 · doi: 10.48550/arxiv.1602.07680 · pith_short_12: NTBSXOZUPT24 · pith_short_16: NTBSXOZUPT245O57 · pith_short_8: NTBSXOZU

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/NTBSXOZUPT245O57IWXXKJ5PIW \
  | 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: 6cc32bbb347cf5cebbbf45af7527af45a989846d98e985411411bc82eb984861

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3203ed70186f7a892fb06ba492e57420c5df20f2d9c35cb2bef8338ff3b5cfc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2016-02-23T22:29:09Z",
    "title_canon_sha256": "77fde1156b64ce2b13ad9d15eae975969572398d5568cda9d4b3985c6ce1fa27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.07680",
    "kind": "arxiv",
    "version": 1
  }
}