Pith Number

pith:XMWXHDP3

pith:2011:XMWXHDP3CC3VWQQGXTUDCEYU6L

not attested not anchored not stored refs pending

Natural Complexity, Computational Complexity and Depth

Jon Machta

arxiv:1111.2845 v1 · 2011-11-11 · physics.pop-ph · cond-mat.stat-mech · nlin.AO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XMWXHDP3CC3VWQQGXTUDCEYU6L}

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	2026-05-18T04:08:24.900449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb2d738dfb10b75b4206bce8311314f2c26eff5fa4db5944567017a4801a44a8

Aliases

arxiv: 1111.2845 · arxiv_version: 1111.2845v1 · doi: 10.48550/arxiv.1111.2845 · pith_short_12: XMWXHDP3CC3V · pith_short_16: XMWXHDP3CC3VWQQG · pith_short_8: XMWXHDP3

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/XMWXHDP3CC3VWQQGXTUDCEYU6L \
  | 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: bb2d738dfb10b75b4206bce8311314f2c26eff5fa4db5944567017a4801a44a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9201ef3b2b698378346592f28d07da3926c1766503c931f89b85d72ff0f48068",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "nlin.AO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2011-11-11T20:35:18Z",
    "title_canon_sha256": "99377ebb3e5bac2403005fed8be8d80eee06a68369f8c4fbd090ac99d5128d15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2845",
    "kind": "arxiv",
    "version": 1
  }
}