Pith Number

pith:ZKHMFWYT

pith:1998:ZKHMFWYTS7UGF4IPIM3ECBKG6U

not attested not anchored not stored refs pending

Semianalytic modelling of the formation and evolution of galaxies

C.G. Lacey (TAC, C.M. Baugh (University of Durham), Copenhagen), C.S. Frenk (University of Durham), S. Cole

arxiv:astro-ph/9805248 v1 · 1998-05-19 · 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{ZKHMFWYTS7UGF4IPIM3ECBKG6U}

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	2026-07-04T14:15:50.097450Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca8ec2db1397e862f10f4336410546f5100e242ea5c718bd1bf035b0f2b2ed6c

Aliases

arxiv: astro-ph/9805248 · arxiv_version: astro-ph/9805248v1 · doi: 10.48550/arxiv.astro-ph/9805248 · pith_short_12: ZKHMFWYTS7UG · pith_short_16: ZKHMFWYTS7UGF4IP · pith_short_8: ZKHMFWYT

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/ZKHMFWYTS7UGF4IPIM3ECBKG6U \
  | 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: ca8ec2db1397e862f10f4336410546f5100e242ea5c718bd1bf035b0f2b2ed6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e52a419a8a3ddc254842e4b72854155246e4fd11aac069eca6cc4c76eb0142ae",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-05-19T09:33:52Z",
    "title_canon_sha256": "f57da72a1b75558c8afbbe1d797aca3d81e8982aba9673718bfaf21c4aa4e436"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9805248",
    "kind": "arxiv",
    "version": 1
  }
}