Pith Number

pith:EFRYYC2H

pith:2008:EFRYYC2HMLIH75P6RP4HZVJM6S

not attested not anchored not stored refs pending

Reopening the window on charged dark matter

Edward W. Kolb, Leonid Chuzhoy

arxiv:0809.0436 v2 · 2008-09-02 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EFRYYC2HMLIH75P6RP4HZVJM6S}

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	2026-07-04T15:46:21.545457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21638c0b4762d07ff5fe8bf87cd52cf49195fdfaa58655d7e1339af95ff31e4e

Aliases

arxiv: 0809.0436 · arxiv_version: 0809.0436v2 · doi: 10.48550/arxiv.0809.0436 · pith_short_12: EFRYYC2HMLIH · pith_short_16: EFRYYC2HMLIH75P6 · pith_short_8: EFRYYC2H

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/EFRYYC2HMLIH75P6RP4HZVJM6S \
  | 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: 21638c0b4762d07ff5fe8bf87cd52cf49195fdfaa58655d7e1339af95ff31e4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fe03231ca7e69de2e3c1d1d076680ce01445c79137604d7d511e697b53508bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-02T13:29:49Z",
    "title_canon_sha256": "f17eeb0d26f5e8ecf921a4fbcbede0e3d42e0ae00647847c16e7247274aef449"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.0436",
    "kind": "arxiv",
    "version": 2
  }
}