Pith Number

pith:HUCZDXSH

pith:2011:HUCZDXSHREJOAY64SMPKAQ3VLE

not attested not anchored not stored refs pending

The MM Alternative to EM

Kenneth Lange, Tong Tong Wu

arxiv:1104.2203 v1 · 2011-04-12 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HUCZDXSHREJOAY64SMPKAQ3VLE}

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	2026-05-18T04:24:35.755783Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d0591de478912e063dc931ea04375590c9843cbc5a4a92fd6f31573aaeb65aa

Aliases

arxiv: 1104.2203 · arxiv_version: 1104.2203v1 · doi: 10.48550/arxiv.1104.2203 · pith_short_12: HUCZDXSHREJO · pith_short_16: HUCZDXSHREJOAY64 · pith_short_8: HUCZDXSH

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/HUCZDXSHREJOAY64SMPKAQ3VLE \
  | 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: 3d0591de478912e063dc931ea04375590c9843cbc5a4a92fd6f31573aaeb65aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "882a028d5b8a5e432ca7adbada011a6dd3074441fe5715972b034dd2cd292ebf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2011-04-12T13:14:51Z",
    "title_canon_sha256": "87cf438243949ed6b71fe011f6ab53663522fec4635ededcd980b4d42255dfd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2203",
    "kind": "arxiv",
    "version": 1
  }
}