Pith Number

pith:2NO7V4HZ

pith:2012:2NO7V4HZOPPFG5C4JFMIDJ3N4I

not attested not anchored not stored refs pending

Viscosity in modified gravity

Iver Brevik

arxiv:1211.2562 v2 · 2012-11-12 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2NO7V4HZOPPFG5C4JFMIDJ3N4I}

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	2026-05-18T03:40:13.663952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d35dfaf0f973de53745c495881a76de2372bf4a80e32ea08840a9c3cbc332557

Aliases

arxiv: 1211.2562 · arxiv_version: 1211.2562v2 · doi: 10.48550/arxiv.1211.2562 · pith_short_12: 2NO7V4HZOPPF · pith_short_16: 2NO7V4HZOPPFG5C4 · pith_short_8: 2NO7V4HZ

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/2NO7V4HZOPPFG5C4JFMIDJ3N4I \
  | 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: d35dfaf0f973de53745c495881a76de2372bf4a80e32ea08840a9c3cbc332557

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70b5ebf06e1cee9498e21355ee94ef6aa5b032c66a52e18d538f2644ebcc327b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-11-12T10:58:32Z",
    "title_canon_sha256": "320047174a8a3cb0c881b6ef70d92152becbb653b536a55b59889bad463f6f9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.2562",
    "kind": "arxiv",
    "version": 2
  }
}