Pith Number

pith:EH4QO2JY

pith:2008:EH4QO2JYZJZKR3G3PBU7DY6FZV

not attested not anchored not stored refs pending

The Growth of Central and Satellite Galaxies in Cosmological Smoothed Particle Hydrodynamics Simulations

David H.Weinberg, Dusan Keres, Neal Katz, Oleg Y.Gnedin, Romeel Dave, Vimal Simha

arxiv:0809.2999 v1 · 2008-09-18 · 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{EH4QO2JYZJZKR3G3PBU7DY6FZV}

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	2026-05-18T02:35:14.774868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21f9076938ca72a8ecdb7869f1e3c5cd5f5af9e0abe4b2ca1346f5d0303f2c82

Aliases

arxiv: 0809.2999 · arxiv_version: 0809.2999v1 · doi: 10.48550/arxiv.0809.2999 · pith_short_12: EH4QO2JYZJZK · pith_short_16: EH4QO2JYZJZKR3G3 · pith_short_8: EH4QO2JY

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/EH4QO2JYZJZKR3G3PBU7DY6FZV \
  | 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: 21f9076938ca72a8ecdb7869f1e3c5cd5f5af9e0abe4b2ca1346f5d0303f2c82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3bffd03d86d24a8e2bb7d71efeeed6241b1cf74535872eb6ed3ebf2a66366671",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-18T19:00:50Z",
    "title_canon_sha256": "2d40232275e0514f17340cc79d6767d4b7dd9119ca1c88b1476569bb4d6ac3cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2999",
    "kind": "arxiv",
    "version": 1
  }
}