Pith Number

pith:PTKBUC32

pith:2012:PTKBUC32FAKKR4UKWSMJCLQVHD

not attested not anchored not stored refs pending

A Brief History of the Statistics Department of the University of California at Berkeley

Jim Pitman, John Rice, Terry Speed

arxiv:1201.6450 v1 · 2012-01-31 · stat.OT · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PTKBUC32FAKKR4UKWSMJCLQVHD}

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	2026-05-18T04:03:31.481539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cd41a0b7a2814a8f28ab498912e1538f90de564d93eafb75dacb87b76a414c8

Aliases

arxiv: 1201.6450 · arxiv_version: 1201.6450v1 · doi: 10.48550/arxiv.1201.6450 · pith_short_12: PTKBUC32FAKK · pith_short_16: PTKBUC32FAKKR4UK · pith_short_8: PTKBUC32

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/PTKBUC32FAKKR4UKWSMJCLQVHD \
  | 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: 7cd41a0b7a2814a8f28ab498912e1538f90de564d93eafb75dacb87b76a414c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6a4c91985085bad617d17d8380e9e28e68d2812badcf5bfb880b981e434be2a",
    "cross_cats_sorted": [
      "math.HO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.OT",
    "submitted_at": "2012-01-31T05:54:46Z",
    "title_canon_sha256": "fdf6adf4ec63b13e46d47de4cccc11549d9477315445eddfac7040d05db9ee78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.6450",
    "kind": "arxiv",
    "version": 1
  }
}