Pith Number

pith:52J7FEXC

pith:2015:52J7FEXCZBBA5PXUJZMYT353CL

not attested not anchored not stored refs pending

Developing the Next Generation of Physics Assessments

James T. Laverty, Marcos D. Caballero, Melanie M. Cooper

arxiv:1507.00663 v2 · 2015-07-02 · 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{52J7FEXCZBBA5PXUJZMYT353CL}

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	2026-05-18T01:29:20.726849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee93f292e2c8420ebef44e5989efbb12c69c3562a8e4a0185381f7f5745912c9

Aliases

arxiv: 1507.00663 · arxiv_version: 1507.00663v2 · doi: 10.48550/arxiv.1507.00663 · pith_short_12: 52J7FEXCZBBA · pith_short_16: 52J7FEXCZBBA5PXU · pith_short_8: 52J7FEXC

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/52J7FEXCZBBA5PXUJZMYT353CL \
  | 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: ee93f292e2c8420ebef44e5989efbb12c69c3562a8e4a0185381f7f5745912c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7fe26d66a8a0974028485c694939c004ce297e6240efad7d15c6be019c99ddd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-07-02T17:19:22Z",
    "title_canon_sha256": "7dde5679d5a09b074648be0955df4726c5f6d9cfbffb837bab899129b5e1b1f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.00663",
    "kind": "arxiv",
    "version": 2
  }
}