Pith Number

pith:Z7WASVWC

pith:2009:Z7WASVWCNQEEBOTRNMEQNVOLND

not attested not anchored not stored refs pending

Layering in Crumpled Sheets

Charles Radin, David Aristoff

arxiv:0912.1861 v2 · 2009-12-09 · cond-mat.soft · cond-mat.stat-mech

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z7WASVWCNQEEBOTRNMEQNVOLND}

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	2026-05-18T02:10:25.085710Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfec0956c26c0840ba716b0906d5cb68c48744a42ee9a1dee5778cab7284f5b5

Aliases

arxiv: 0912.1861 · arxiv_version: 0912.1861v2 · doi: 10.48550/arxiv.0912.1861 · pith_short_12: Z7WASVWCNQEE · pith_short_16: Z7WASVWCNQEEBOTR · pith_short_8: Z7WASVWC

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/Z7WASVWCNQEEBOTRNMEQNVOLND \
  | 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: cfec0956c26c0840ba716b0906d5cb68c48744a42ee9a1dee5778cab7284f5b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99a4be7a4a960c6745cbcf5208f2a05ce21ad373fd9354127ed43666d64129f3",
    "cross_cats_sorted": [
      "cond-mat.stat-mech"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2009-12-09T21:04:20Z",
    "title_canon_sha256": "7c2c5ea8d3a89e00b1a073677fa9153752badf1f9f7be1f0941919f9e5efd670"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.1861",
    "kind": "arxiv",
    "version": 2
  }
}