Pith Number

pith:QZNU7OAA

pith:2015:QZNU7OAAXILWQIO3XW5KFTKSJ7

not attested not anchored not stored refs pending

Stretching Rubber, Stretching Minds: a polymer physics lab for teaching entropy

Karen E. Daniels, Theodore A. Brzinski

arxiv:1508.00538 v1 · 2015-08-03 · 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{QZNU7OAAXILWQIO3XW5KFTKSJ7}

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	2026-05-18T01:35:57.865090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

865b4fb800ba176821dbbdbaa2cd524fdb3e0202ff18db362fec6658f7368c62

Aliases

arxiv: 1508.00538 · arxiv_version: 1508.00538v1 · doi: 10.48550/arxiv.1508.00538 · pith_short_12: QZNU7OAAXILW · pith_short_16: QZNU7OAAXILWQIO3 · pith_short_8: QZNU7OAA

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/QZNU7OAAXILWQIO3XW5KFTKSJ7 \
  | 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: 865b4fb800ba176821dbbdbaa2cd524fdb3e0202ff18db362fec6658f7368c62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e00f441fd76dd9cb535e028dbc70820615811407271e5d41d400a970ef1dea1d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-08-03T19:21:20Z",
    "title_canon_sha256": "949e44334010815a357530d59b766d6bfc075b0b25d34c7c64bfe9ea4b89859a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.00538",
    "kind": "arxiv",
    "version": 1
  }
}