Pith Number

pith:M3WQ3NLR

pith:2018:M3WQ3NLRPHQWBQKLK7QHNVDBQM

not attested not anchored not stored refs pending

Surprise! Shifting students away from model-verifying frames in physics labs

Emily M. Smith, Martin M. Stein, N.G. Holmes

arxiv:1807.04710 v1 · 2018-07-12 · 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{M3WQ3NLRPHQWBQKLK7QHNVDBQM}

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	2026-05-17T23:42:08.714726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66ed0db57179e160c14b57e076d46183288095f5dc6eff201a5376c7f65ad5e1

Aliases

arxiv: 1807.04710 · arxiv_version: 1807.04710v1 · doi: 10.48550/arxiv.1807.04710 · pith_short_12: M3WQ3NLRPHQW · pith_short_16: M3WQ3NLRPHQWBQKL · pith_short_8: M3WQ3NLR

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/M3WQ3NLRPHQWBQKLK7QHNVDBQM \
  | 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: 66ed0db57179e160c14b57e076d46183288095f5dc6eff201a5376c7f65ad5e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b17f23e99eb10f0df9673a369b81eab269ff863c5b945819eef89ab78f5ee49",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2018-07-12T16:28:19Z",
    "title_canon_sha256": "bd94dd695497081508c17a7ce4317d420bb46adfdbb817f75c3b49a240d5eb1d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04710",
    "kind": "arxiv",
    "version": 1
  }
}