Pith Number

pith:C3Y7UW3R

pith:2012:C3Y7UW3RK3T53VEBJ3Z63CJAIW

not attested not anchored not stored refs pending

Light and Dark in the Universe

Mordehai Milgrom

arxiv:1203.0954 v1 · 2012-03-05 · physics.pop-ph · astro-ph.CO · 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{C3Y7UW3RK3T53VEBJ3Z63CJAIW}

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	2026-05-18T04:00:49.969938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16f1fa5b7156e7ddd4814ef3ed892045983e3624b232f19b995aafb0ab472300

Aliases

arxiv: 1203.0954 · arxiv_version: 1203.0954v1 · doi: 10.48550/arxiv.1203.0954 · pith_short_12: C3Y7UW3RK3T5 · pith_short_16: C3Y7UW3RK3T53VEB · pith_short_8: C3Y7UW3R

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/C3Y7UW3RK3T53VEBJ3Z63CJAIW \
  | 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: 16f1fa5b7156e7ddd4814ef3ed892045983e3624b232f19b995aafb0ab472300

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cd7ccc6185d4ee458108b6f7fe30cbab27cd189d10ab6491c2ee89f17f395e0",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2012-03-05T16:04:06Z",
    "title_canon_sha256": "11be62c815854b8e1d231df4d45c1eca670e83f2f3016928eb56a594d04b24ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0954",
    "kind": "arxiv",
    "version": 1
  }
}