Pith Number

pith:Q6KXGGBQ

pith:2008:Q6KXGGBQGY45ZOXL3KRTZ5EPJF

not attested not anchored not stored refs pending

Entropy of jammed matter

Chaoming Song, Christopher Briscoe, Hernan A. Makse, Ping Wang

arxiv:0808.2190 v2 · 2008-08-15 · cond-mat.soft · cond-mat.dis-nn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q6KXGGBQGY45ZOXL3KRTZ5EPJF}

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	2026-05-18T02:43:01.078470Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87957318303639dcbaebdaa33cf48f496abcc35e85082bff7847d02060e992b7

Aliases

arxiv: 0808.2190 · arxiv_version: 0808.2190v2 · doi: 10.48550/arxiv.0808.2190 · pith_short_12: Q6KXGGBQGY45 · pith_short_16: Q6KXGGBQGY45ZOXL · pith_short_8: Q6KXGGBQ

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/Q6KXGGBQGY45ZOXL3KRTZ5EPJF \
  | 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: 87957318303639dcbaebdaa33cf48f496abcc35e85082bff7847d02060e992b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "436b7ddaea0661fd19c6ea8a4289ed221f80fe444e1268cc5793f4e16f290457",
    "cross_cats_sorted": [
      "cond-mat.dis-nn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2008-08-15T19:53:11Z",
    "title_canon_sha256": "1fbf2fd39a83f4dd7c21e581c469d0804893bbe56e25b0134814c2bb72e19d8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.2190",
    "kind": "arxiv",
    "version": 2
  }
}