Pith Number

pith:HAFVHJH7

pith:2011:HAFVHJH72PTRLQAGL2QSSIFJ4U

not attested not anchored not stored refs pending

Hydrodynamical simulations and semi-analytic models of galaxy formation: two sides of the same coin

Claudio Dalla Vecchia, Eyal Neistein, Joop Schaye, Sadegh Khochfar

arxiv:1109.4635 v2 · 2011-09-21 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HAFVHJH72PTRLQAGL2QSSIFJ4U}

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	2026-05-18T02:00:26.965617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

380b53a4ffd3e715c0065ea12920a9e51497701a6094b84db4b7169e3787b29c

Aliases

arxiv: 1109.4635 · arxiv_version: 1109.4635v2 · doi: 10.48550/arxiv.1109.4635 · pith_short_12: HAFVHJH72PTR · pith_short_16: HAFVHJH72PTRLQAG · pith_short_8: HAFVHJH7

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/HAFVHJH72PTRLQAGL2QSSIFJ4U \
  | 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: 380b53a4ffd3e715c0065ea12920a9e51497701a6094b84db4b7169e3787b29c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e626941f500607e1181dc61668e826587a57d34bf195f0ca648f537180d83e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-21T20:00:02Z",
    "title_canon_sha256": "a02c2931911d1ffc14999022881ecb5f0115187594fac94025c33c3387faf0a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4635",
    "kind": "arxiv",
    "version": 2
  }
}