Pith Number

pith:3QH2YH4H

pith:2005:3QH2YH4HUAOSPZZWMWVBYGLWFL

not attested not anchored not stored refs pending

How Concentrated Are The Haloes Of Low Surface Brightness Galaxies In The Cold Dark Matter Model?

Brad K.Gibson & Matthias Steinmetz, Chris Power, Jeremy Bailin

arxiv:astro-ph/0502231 v1 · 2005-02-11 · 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{3QH2YH4HUAOSPZZWMWVBYGLWFL}

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	2026-07-04T14:14:04.862786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc0fac1f87a01d27e73665aa1c19762ac22560f0bc65e5fcd287ec44f2c7ba4e

Aliases

arxiv: astro-ph/0502231 · arxiv_version: astro-ph/0502231v1 · doi: 10.48550/arxiv.astro-ph/0502231 · pith_short_12: 3QH2YH4HUAOS · pith_short_16: 3QH2YH4HUAOSPZZW · pith_short_8: 3QH2YH4H

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/3QH2YH4HUAOSPZZWMWVBYGLWFL \
  | 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: dc0fac1f87a01d27e73665aa1c19762ac22560f0bc65e5fcd287ec44f2c7ba4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "586aa6ed21a2079e60d399628b640c42d5baffcf897871373e6aa9ef358518c3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-02-11T00:46:18Z",
    "title_canon_sha256": "fb9e6c4fd54a48bda4db976111ad0e298bd66f0a0730b9dbc43f33a891d3ad03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0502231",
    "kind": "arxiv",
    "version": 1
  }
}