Pith Number

pith:QZN5UUS2

pith:2005:QZN5UUS24LBWOHTW2VLHVAEM6X

not attested not anchored not stored refs pending

The Evolution of the Dark Halo Spin Parameters lambda and lambda' in a LCDM Universe: The Role of Minor and Major Mergers

Andreas Burkert (USM, Heidelberg), Helmut Hetznecker (MPIA, Munich)

arxiv:astro-ph/0505249 v1 · 2005-05-12 · 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{QZN5UUS24LBWOHTW2VLHVAEM6X}

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	2026-07-04T16:52:22.069551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

865bda525ae2c3671e76d5567a808cf5e48738c29b8f4f911563aadf4a70da9f

Aliases

arxiv: astro-ph/0505249 · arxiv_version: astro-ph/0505249v1 · doi: 10.48550/arxiv.astro-ph/0505249 · pith_short_12: QZN5UUS24LBW · pith_short_16: QZN5UUS24LBWOHTW · pith_short_8: QZN5UUS2

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/QZN5UUS24LBWOHTW2VLHVAEM6X \
  | 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: 865bda525ae2c3671e76d5567a808cf5e48738c29b8f4f911563aadf4a70da9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b941690933d0126abb182da5c63f7ea942e8e7b9f8ab4776e007d0d3e0d96982",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-05-12T10:44:41Z",
    "title_canon_sha256": "ad5c1c1bc11187bd87bdb3a576ca467eb38d83d8983f52bc2185e1682e9c3b53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0505249",
    "kind": "arxiv",
    "version": 1
  }
}