Pith Number

pith:OJRCA2WU

pith:2016:OJRCA2WUXQIU3OPJ7KZW6ETCHY

not attested not anchored not stored refs pending

${\rm P}^3$: A Practice Focused Learning Environment

Marcos D. Caballero, Michael J. Obsniuk, Paul W. Irving

arxiv:1607.04455 v1 · 2016-07-15 · 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{OJRCA2WUXQIU3OPJ7KZW6ETCHY}

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	2026-05-18T00:39:02.522413Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7262206ad4bc114db9e9fab36f12623e3099493a20cdb54d2a50c4a6d1e49f18

Aliases

arxiv: 1607.04455 · arxiv_version: 1607.04455v1 · doi: 10.48550/arxiv.1607.04455 · pith_short_12: OJRCA2WUXQIU · pith_short_16: OJRCA2WUXQIU3OPJ · pith_short_8: OJRCA2WU

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/OJRCA2WUXQIU3OPJ7KZW6ETCHY \
  | 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: 7262206ad4bc114db9e9fab36f12623e3099493a20cdb54d2a50c4a6d1e49f18

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d937efea4a204e79ed807f788664edcb4607f5cc91c22406e9274f765b26d63",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2016-07-15T11:04:37Z",
    "title_canon_sha256": "ef97869895647c1e3607995ee81682a1086cd730617e4667cc1198567935df4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.04455",
    "kind": "arxiv",
    "version": 1
  }
}