Pith Number

pith:7RFOOP7G

pith:2018:7RFOOP7GO6TXNSM3ZVY7HC6YZL

not attested not anchored not stored refs pending

Impact arising from sustained public engagement: A measured increase in learning outcomes

James A. McLaughlin, Lynda G. Boothroyd, Peter M. Philipson

arxiv:1810.05482 v1 · 2018-10-12 · 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{7RFOOP7GO6TXNSM3ZVY7HC6YZL}

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	2026-05-18T00:03:30.380049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc4ae73fe677a776c99bcd71f38bd8cae6279169759eaf41a6f6211b38ec1de7

Aliases

arxiv: 1810.05482 · arxiv_version: 1810.05482v1 · doi: 10.48550/arxiv.1810.05482 · pith_short_12: 7RFOOP7GO6TX · pith_short_16: 7RFOOP7GO6TXNSM3 · pith_short_8: 7RFOOP7G

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/7RFOOP7GO6TXNSM3ZVY7HC6YZL \
  | 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: fc4ae73fe677a776c99bcd71f38bd8cae6279169759eaf41a6f6211b38ec1de7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50e630f5fbd21a449d7511b139874003aadbb82596930981d19ada01164b010b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2018-10-12T12:52:22Z",
    "title_canon_sha256": "33d069f6abea6e84c59352d1a1fa9d0c22063b39b6d67088004054dbb458e1fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.05482",
    "kind": "arxiv",
    "version": 1
  }
}