Pith Number

pith:KIRQXVFX

pith:2006:KIRQXVFXPFMBL6LSUHH2SOMMV7

not attested not anchored not stored refs pending

A simple model for the size-evolution of elliptical galaxies

Joseph Silk, Sadegh Khochfar

arxiv:astro-ph/0605436 v2 · 2006-05-17 · 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{KIRQXVFXPFMBL6LSUHH2SOMMV7}

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	2026-05-18T04:29:04.660985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52230bd4b7795815f972a1cfa9398caffe83bbcd2e79d91ada257a5bca1c7993

Aliases

arxiv: astro-ph/0605436 · arxiv_version: astro-ph/0605436v2 · doi: 10.48550/arxiv.astro-ph/0605436 · pith_short_12: KIRQXVFXPFMB · pith_short_16: KIRQXVFXPFMBL6LS · pith_short_8: KIRQXVFX

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/KIRQXVFXPFMBL6LSUHH2SOMMV7 \
  | 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: 52230bd4b7795815f972a1cfa9398caffe83bbcd2e79d91ada257a5bca1c7993

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1256c31db91d17744d6d6d4b8dd2e48f54ca0e13aeeb7e6dc340276510f7a310",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-05-17T21:06:33Z",
    "title_canon_sha256": "f930b468949403016bc5c1243ad31105659c162b47381f9e42b9d7ca0b7fc8f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0605436",
    "kind": "arxiv",
    "version": 2
  }
}