Pith Number

pith:TIZMHP46

pith:2011:TIZMHP46YBBYGXPOUXMX2K4JZO

not attested not anchored not stored refs pending

Disciplinary authenticity: Enriching the reforms of introductory physics courses for life-science students

Edward F. Redish, Janet E. Coffey, Jessica Watkins, Todd J. Cooke

arxiv:1109.4983 v1 · 2011-09-23 · 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{TIZMHP46YBBYGXPOUXMX2K4JZO}

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	2026-05-18T03:46:18.574054Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a32c3bf9ec043835deea5d97d2b89cb9da77f8a114c5669a630de0239c824a6

Aliases

arxiv: 1109.4983 · arxiv_version: 1109.4983v1 · doi: 10.48550/arxiv.1109.4983 · pith_short_12: TIZMHP46YBBY · pith_short_16: TIZMHP46YBBYGXPO · pith_short_8: TIZMHP46

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/TIZMHP46YBBYGXPOUXMX2K4JZO \
  | 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: 9a32c3bf9ec043835deea5d97d2b89cb9da77f8a114c5669a630de0239c824a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7705993808d292519d31f851542e99e2170d916e91f4a8074c8393c9dde6d308",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2011-09-23T01:32:12Z",
    "title_canon_sha256": "5b7c0c8ebb9a7051ab06e6aea3435011442f9757cefc16ae7b72359002d06cb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4983",
    "kind": "arxiv",
    "version": 1
  }
}